SVPWM Overmodulation Scheme of ThreeLevel Inverters for Vector Controlled Induction Motor Drives


 Joanna Ryan
 11 months ago
 Views:
Transcription
1 SVPWM Overmodulation Scheme of ThreeLevel Inverter for 481 JPE ICPE 07 Selected Paper SVPWM Overmodulation Scheme of ThreeLevel Inverter for Vector Controlled Induction Motor Drive KyoungMin Kwon, JaeMoon Lee, JinMok Lee, and Jaeho Choi School of Electrical and Computer Engineering, Chungbuk National Univerity, Cheongju, Korea R&D Center, LS Indutrial Sytem Co. Ltd., Cheonan, Korea ABSTRACT Thi paper decribe a SVPWM overmodulation cheme of NPC type threelevel inverter for traction drive which extend the modulation index from MI=0.907 to unity. SVPWM trategy i organized by two operation mode of undermodulation and overmodulation. The witching tate under the undermodulation mode are determined by dividing them with two linear region and one hybrid region the ame a the conventional threelevel inverter. On the other hand, under the overmodulation mode, they are generated by doing it with two overmodulation region the ame a the conventional overmodulation trategy of a two level inverter. Following the decription of overmodulation cheme of a threelevel inverter, the ytem decription of a vector controlled induction motor for traction drive ha been dicued. Finally, the validity of the propoed modulation algorithm ha been verified through imulation and experimental reult. Keyword: Overmodulation, SVPWM, NPC type threelevel inverter, Indirect vector control 1. Introduction Thi paper preent an overmodulation cheme of NPC type threelevel inverter and an indirect vector control of induction motor for traction drive. Recently railway vehicle have operated at higher peed within the limited plant for higher efficiency. The conventional railway vehicle ha ued the vector control to the modulation factor of 90.7% with pace vector PWM (SVPWM) and ued the lipfrequency control to ixtep mode. The lipfrequency Manucript received January 0, 2009; revied April 8, 2009 Correponding Author: Tel: , Fax: , Chungbuk Nat l Univ. School of Electrical and Computer Engineering, Chungbuk National Univerity, Cheongju, Korea R&D Center, LS Indutrial Sytem Co. Ltd., Cheonan, Korea control i uitable for traction drive, becaue the drive pattern of electric railway ytem do not requet a rapid change. However, that control can not realize a quick torque repone. In highpeed train, the lip between train wheel and rail i likely to occur, and the fat torque control i crucial to overcome thi lip problem. The vector control provide an intantaneou torque repone becaue it i poible to control the flux and torque of the induction motor independently. An overmodulation cheme of SVPWM with modulation factor 90.7% to unity i eential if the drive can meet the operation at extended peed including the field weakening region in vector control with higher torque and power characteritic. The overmodulation trategy of a twolevel inverter and it implementation ha been tudied [1,2]. The NPC type threelevel inverter ha three output voltage
2 482 Journal of Power Electronic, Vol. 9, No., May 2009 level. With thi circuit configuration, the voltage tre on it power witching device i half that of the conventional twolevel inverter. Becaue of thi nature, it ha been applied to the medium and high voltage drive. In addition to the capability to handle the high voltage, the NPC type threelevel inverter ha favorable feature; lower line to line and commonmode voltage tep, more frequent voltage tep in one carrier cycle, and lower ripple component in the output current at the ame carrier frequency. Thee feature lead to ignificant advantage for motor drive over the conventional twolevel inverter in the form of lower tree to the motor winding and bearing, le influence of noie to the adjacent equipment, etc []. Recently, mot Japanee electrical train companie have developed a threelevel PWM inverter drive ytem for traction drive. It i well known that the threelevel configuration ha greatly reduced the ize of the main tranformer and tractionmotor, the current harmonic in the ignaling band, the acoutic noie, and the volume and weight of the equipment [4][7]. Alo, the power rating of the ytem can be increaed. However, SVPWM of a threelevel inverter i coniderably more complex than that of a twolevel inverter due to the large number of inverter witching tate. Beide, there i the problem of neutral point voltage balancing [8]. There have been ome tudie on the overmodulation trategy of threelevel inverter, but few of them are focued on the application of traction drive. Mot of them are limited to the modulation itelf and lack of experimental implementation [9][11]. Thi paper decribe a SVPWM overmodulation cheme of the NPC type threelevel inverter that extend the modulation index from MI=0.907 to unity [12]. SVPWM trategy i organized by two operation mode of undermodulation and overmodulation. The witching tate under the undermodulation mode are determined by dividing them with two linear region and one hybrid region the ame a the conventional threelevel inverter. On the other hand, under the overmodulation mode, they are generated by doing thi with two overmodulation region which i the ame a the conventional overmodulation trategy of the two level inverter. Following the decription of the overmodulation cheme of the threelevel inverter, the ytem decription of a vector controlled induction motor for traction drive ha been dicued. Finally, the validity of the propoed modulation algorithm ha been verified through the imulation and experimental reult. 2. NPC type Threelevel Inverter The NPC type threelevel inverter ha three output voltage level. With thi circuit configuration, the voltage tre on it power witching device i half that of the conventional twolevel inverter. Becaue of thi nature, it ha been applied to the medium and high voltage drive. In addition to the capability to handle the high voltage, the NPC type threelevel inverter ha favorable feature; lower line to line and commonmode voltage tep, more frequent voltage tep in one carrier cycle, and lower ripple component in the output current at the ame carrier frequency. Thee feature lead to ignificant advantage for motor drive over the conventional twolevel inverter in the form of lower tree to the motor winding and bearing, le influence of noie to the adjacent equipment, etc. Fig. 1 how the chematic diagram of a threelevel IGBT inverter with induction motor load. For power converion, a imilar unit i connected at the DC input in an invere manner. The phae U, for example, get the tate P when the witche U1 and U2 are on, wherea it get the tate N when the witche U and U4 are on. At neutralpoint clamping, the phae get the O tate when either U2 or U conduct depending on poitive or negative phae current polarity, repectively. The witching tate of the threelevel inverter can be ummarized a hown in Table 1, where U, V, and W are the phae and P, N, and O are dcbu point. The total witching tate conit of 27 and can be Vdc Gate_U1 Gate_V1 Gate_W1 Vc_UP Gate_U2 Gate_V2 Gate_W2 Vc_DN Gate_U Gate_U4 Gate_V Gate_V4 Gate_W Gate_W4 Fig. 1. Schematic diagram of threelevel inverter with induction motor load. IM
3 SVPWM Overmodulation Scheme of ThreeLevel Inverter for 48 decribed a hown in Fig. 2. The correponding 27 witching tate of the threelevel inverter indicating each tate with the combination of P, N, and O tate are claified by four voltage vector according to the magnitude value of voltage vector. The four voltage vector are eparated by zero vector (ZV), mall vector (SV), middle vector (MV), and large vector (LV). Thee four voltage vector are ummarized in Table 2. Evidently, neutral current will flow through the point O in all the tate except the zero tate and the outer hexagon ha ix large ector(af) a hown and each large ector ha four mall ector(14), giving altogether 24 region of operation. An overmodulation trategy for higher voltage utilization i driven from the developing Fourier erie expanion of the reference phae voltage waveform which generate the deired fundamental component. According to the modulation index (MI), the PWM control range can be divided into three region a one linear region ( 0 MI 0.907) of undermodulation mode and two overmodulation mode of overmodulation region I ( MI 0.952) and overmodulation region II ( MI 1) a hown in Fig.. 10 NPO OPO NON OPP NPP NOO OOP NOP NNO 16 Sector D Sector C Sector B NPN OPN PPN PPO OON 5 1 PPP POO OOO ONN NNN 21 PON 17 2 POP ONO PNO NNP ONP PNP Sector E Sector A 2 PNN 24 Fig. 2. Space voltage vector diagram of NPC type threelevel Inverter. Over Modulation Region V8 V6 V5 Linear Region II V9 V7 Hybrid Region V4 V Linear Region I V11 V10 V0 V1 V2 V12 V1 V16 V18 Sector F Table 1 Switching tate of threelevel inverter V14 V15 V17 Switching State Gate(X) X=[U, V, W] V(X)O [Node voltage] X1 X2 X X4 Fig.. Operation region of threelevel inverter for overmodulated PWM. P ON ON OFF OFF 2 O OFF ON ON OFF 0 N OFF OFF ON ON 2 Switching SV vector Table 2 Voltage vector according to witching tate Switching tate (U V W) Capacitor tate V C _ UP V C _ DN voltage vector ZV (PPP) (OOO) (NNN) MV LV USV LSV (POO) (PPO) (OPO) (OPP) (OOP) (POP) (ONN) (OON) (NON) (NOO) (NNO) (ONO) (PON) (OPN) (NPO) (NOP) (ONP) (PNO) (PNN) (PPN) (NPN) (NPP) (NNP) (PNP) / +/ +/ +/ 2V dc 2.1 Undermodulation mode ( 0 MI ) The linear region i located in the incribed circle of an outer hexagon. It conit of linear region mode I ( 0 MI 0.4), linear region II ( 0.5 MI 0.907), and their interfaced hybrid region ( 0.4 MI 0.5). Linear region mode I i located in the incribed circle of inner hexagon. The Hybrid region i located between the incribed circle of inner hexagon and the circumcribed circle of the inner hexagon. Linear region mode II i located between the circumcribed circle of inner hexagon and the incribed circle of outer hexagon. Linear region mode I ha tep output linetoline voltage like a 2level inverter. Linear region mode II ha 5 tep output linetoline voltage. And hybrid region ha the characteritic of linear region mode I and linear region mode II.
4 484 Journal of Power Electronic, Vol. 9, No., May 2009 V0 Tb θ e V4 Tc mall ector 1 Sector A V V1 Ta V5 Ta mall ector 4 mall ector V Tb mall ector 2 Fig. 4. Voltage vector in large ector A. Table Duration time of voltage vector in each mall ector mall ector T a T b 1 2kT in( e) T[1 2k in( e )] 2 2T [1 k in( e )] V2 Tc T c 2 kt in 2 kt in e T [ 2k in( e ) 1] T[ 1 2k in e ] T [ 2 in( k e ) 1] T [ 2 in( k e ) 1] 4 T[ 2k in e 1] 2kT in( e) 2T [1 k in( e )] T : ampling time for reference vector k V Vdc 2 MI : modulation amplitude ratio Figure 4 how one of ix large ector in the linear region. Each large triangle can be divided into four mall ector 1, 2,, and 4. In SVPWM method, the inverter voltage vector correponding to the apexe of the triangle which include the voltage reference vector are generally elected to minimize the harmonic component of the output linetoline voltage. Table how the analytical time expreion for all the mall ector in the large ector A. Thee time interval can be applied to the other large ector by a phae hift of the voltage reference vector. Thee time interval are ditributed appropriately o a to generate the ymmetrical PWM pule with a neutralpoint voltage balancing. Note that the equence in oppoite ector (AD, BE and CF) i elected to be of a complimentary nature for the voltage balancing of a neutralpoint. 2.2 Overmodulation mode ( MI 1) 1) Overmodulation region I ( MI ) e In the overmodulation region I, the voltage reference vector V exceed the outer hexagon which i the boundary of making a maximum voltage value. So V i booted up to V c for the compenation of voltage lo due to the exce region. Figure 5 preent the trajectory of V, V, and V which i the actual reference vector applying to control in the time domain. The angle r i the reference angle which i an interection of V c and boundary of the hexagon. The region of V r preent four kind of equation per /2 for the angle of the voltage reference vector, a hown in (1) to (4). In both ide region of each triangle ector to c r, V c i ued to compenate the voltage lo due to the exce of the outer hexagon. Plu it generate the maximum voltage value to follow the outer hexagon between thoe two region. The value of taking the fundamental component of Vr i directly proportional to MI. Im Vr i preented in Fig.. f1 tan, 0 r (1) 6 f 2 in, r r co r r (2) f in, r r () co 6 2 f 4 in, co r 6 V c ` V α r θ V r α r Re 2/Vdc 1/Vdc r (4) 2 2 f 1 f 2 A B 0 α 6 r 6 +α 6 r f f 4 C D α r 2 2 θ=ωt Fig. 5. Trajectory of reference voltage vector and phae voltage waveform in overmodulation region I.
5 SVPWM Overmodulation Scheme of ThreeLevel Inverter for 485 where e t and e i an angular velocity of the voltage reference vector. Expanding from (1) to (4) in the Fourier erie and taking it fundamental component, the reultant equation can be expreed a 4 F( r ) f d f d f d f d A 1 in B 2 in C in D 4 in (5) where A, B, C and D denote integral range of each voltage function a hown in Fig. 4. Since F( r ) repreent the peak value of the fundamental component, it can be calculated from the definition of the modulation index. 2 F( r ) Vdc MI (6) Thu, a relationhip between the MI and the reference angle which give a linearity of the output voltage i determined. The equation of the piecewielinear reference angle ( r ) a a function of the MI i hown from (7) to (9). 0.2 MI MI (7) r MI MI (8) r 26.4 MI MI (9) r A etablihed in Fig. 4, the upper limit in the overmodulation region I i r 0. MI at thi condition i 0.952, which i driven in (5) and (6). Therefore when the MI i higher than 0.952, another overmodulation algorithm i neceary. 2) Overmodulation region II ( MI 1) Under uch condition, output voltage higher than MI=0.952 can not be generated ince there exit no more urplu area to compenate for the voltage lo even though the modulation index i increaed above that point. A a reult, over the compenation limit by uing the technique in the overmodulation region I, angle V r i held during holding h for the compenation of voltage lo when V i rotating according to time. Thi i called overmodulation region II. To control the holding angle of the time interval, the active witching tate remain at the vertice which uniquely control the fundamental voltage. A baic concept of the overmodulation region II i imilar to (5) and (6). Region of V r preent four kind of equation per /2 a the angle of reference voltage vector, h, a hown from (10) to (1). The value of the fundamental component of Vr i directly proportional to MI. Figure 6 how the trajectory of the reference voltage vector and phae voltage waveform in the overmodulation region II. 1 tan p h 6 f 0 (10) f2 h h (11) 6 6 ' f in p h h (12) ' co p f4 where h (1) 2 2 ' 6 ' ' p and p ( 1 h) (14) 6 h 6 In (14), ' p and p are phae angle of the actual voltage reference vector rotating a hown in Fig. 7, which i imply driven from the proportional relationhip for angular diplacement of thee two vector a : p : h. (15) 6 6 Thereafter, the actual voltage reference vector i held at the vertex while the fundamental one i continuouly rotating from (( 6) h) to 6. Alo the piecewielinear holding angle ( ) a a function of the MI are hown a from (16) to (18) MI MI (16) h h
6 486 Journal of Power Electronic, Vol. 9, No., May 2009 V ` V r Re 2/Vdc α h f 2 1/Vdc f f 4 Speed reference Flux reference r r e dr e dr Speed controller ( PI controller ) Flux controller ( PI controller ) e i q e i d e i q e i d Qcurrent controller ( PI controller ) dcurrent controller ( PI controller ) V q V d NPC type threelevel inverter SVPWM ia ic abc to dq r IM α h f 1 Feedforword EMF α h 6 A B C D e Flux Etimation i d i q r Im 0 α h 6 6 +α 6 h 2 α h 2 θ=ωt Fig. 6. Trajectory of reference voltage vector and phae voltage waveform in overmodulation region I I. Fig. 8. Schematic diagram of indirect vector control of induction motor. Re ` 2/ Im V r V α h 6 α h V r V α` p α p θ` 1/ Fig. 7. Angular diplacement of reference and actual voltage Vector MI MI (17) h MI MI (18) h. Simulation Reult The validity of the propoed algorithm i verified through the imulation for the threelevel inverter with induction motor. The indirect vector control method utilize the motor velocity feedback and a feedforward lip reference to provide the intantaneou torque control. A chematic diagram of indirect vector control of the induction motor with PI controller i hown in Fig. 8. The feedforward EMF block in current controlled VSI i required to produce the appropriated tator voltage, and the flux reference block 0 Fig. 9. Repone of current controller under repeated motor peed change between 500rpm and 1000rpm for; flux component, torque component. i included to increae the repone peed beyond the nominal peed [1][15]. The imulation reult of indirect vector control are hown in Fig. 9 and 10. Figure 9 how the repone of the current controller for flux component current and torque component current when the reference motor peed change from 500rpm to 1000rpm frequently. A the peed reference value change, the torque component current i regulated to generate the poitive and negative value in acceleration and deceleration region. The flux component current i alo well regulated to follow the reference value without any change under the peed change condition. Figure 10 how the magnitude and phae of reference voltage vector in tationary reference frame during the tranient tate of motor peed change. They change in linear relation to the peed change. The imulation reult of operation for the threelevel
7 SVPWM Overmodulation Scheme of ThreeLevel Inverter for 487 Vd_ref Fig. 1. Simulation reult at MI=0.96; line to line voltage and phae current. Vq_ref (c) Fig. 10. Voltage reference of NPC type threelevel inverter; magnitude of voltage reference in tationary frame, angle of that, (c) dq component of voltage vector in tationary frame. Fig. 14. Simulation reult at MI=0.974; line to line voltage and phae current. Fig. 11. Simulation reult at MI=0.69; line to line voltage and phae current. Fig. 15. Simulation reult at MI=1; line to line voltage and phae current. Fig. 12. Simulation reult at MI=0.767; line to line voltage and phae current. inverter following each region are hown in from Fig. 11 to 15. Thee figure how the reult of phae current and linetoline voltage waveform when MI i 0.69 (Fig. 11) in the linear region mode I, (Fig. 12) in the linear region mode II, 0.96 (Fig. 1) in the overmodulation region I, and (Fig. 14) and 1 (Fig. 15) in the overmodulation region II, repectively. In Fig. 11, the linetoline voltage ha the ame characteritic a that of twolevel inverter. In Fig. 12, the linetoline voltage ha 5
8 488 Journal of Power Electronic, Vol. 9, No., May 2009 tep o the harmonic level i much le than that of the twolevel inverter. In Fig. 1, a an example of overmodulation region I, one of two ector of 2 and 4 i elected a a mall ector for the large ector A. A hown in Fig. 15, it i operated a a ixtep mode at MI=1, and then the holding angle of each mall ector i 6. Table 4 Induction motor rating and parameter Rating Parameter pecification Power 0.75[kW] tator reitance, R.5 [Ω] Fig. 16. Picture of experiment ytem. Pole number 4 rotor reitance, R r Y voltage 80/220[V] Stator leakage inductance, L Y current 2.2/.8[A] rotor leakage inductance, L r [Ω] 1. [mh] 1. [mh] Ide_ref [2A/div] peed 1680[rpm] mutual inductance, L m [mh] frequency 60[Hz] Inertia of wheel, J e 0.002[Kgm 2] Iqe [2A/div] rpm_ref [500rpm/div] 4. Experimental Reult A digital ignal proceor (DSP) TMS20VC i ued a a control board. The rate and parameter of the induction motor ued for experiment are hown at Table IV and Table V. Figure 16 how the front view of the experimental ytem. For the pilot load of traction drive, a large flywheel ytem driving with four induction motor i ued in the experiment. The experimental reult are hown in Fig. 17 to 18 at the ame condition ued in imulation. Figure 17 how the repone of current controller with the current waveform of flux component and torque component when the reference motor peed change from 500rpm to 1000rpm or vice vera. A the peed reference value change, the flux current component are well regulated to follow the reference value. Alo, the torque current component i regulated to generate the poitive and negative value a the change of acceleration and deceleration region. Figure 18 how magnitude and angle of voltage reference vector when the reference of motor peed change. Alo it how flux component and torque component of voltage reference vector. The flux component and torque component of the voltage reference vector in the tationary frame i orthogonal for 2 alway. rpm [500rpm/div] 500m/div Fig. 17. Experimental reult; (top) flux component, (middle) torque current component, (bottom) peed. Vmag [50V/div] Θinv [5rad/div] Vq_ref [100V/div] Vd_ref [100V/div] 100m/div Fig. 18. Experimental reult; (top) voltage magnitude, (middle) phae angle, (bottom) dq component of voltage vector in tationary frame. The experimental reult of operation for threelevel inverter following each region are hown in Fig. 19 to 2. Condition of each operation region are given in Table 5. The line to line voltage are meaured by a differential probe (100:1) and the phae current are done by current probe (1A:20mV). Figure 19 how the reult of phae current and linetoline voltage when MI i 0.69 in the linear region mode I. The linetoline voltage ha the ame characteritic a that of twolevel inverter and mall ector i covered only
9 SVPWM Overmodulation Scheme of ThreeLevel Inverter for 489 Table 5 Operation of threelevel inverter following modulation index rpm V dc V mag MI Region Liner regionⅠ Liner regionⅡ Overmodulation regionⅠ Overmodulation regionⅡ Sixtep operation Korea Science & Engineering Foundation and upported by the Minitry of Education, Science Technology (MEST) and Korea Indutrial Technology Foundation (KOTEF) through the Human Reource Training Project for Regional Innovation. Vab [200V/div] Ia [5A/div] by 1 for large ector. Fig. 20 how the reult of phae current and linetoline voltage when MI i in the linear region mode II. The linetoline voltage ha 5 tep o the harmonic level i much le than that of twolevel inverter. Fig. 21 how the reult of phae current and linetoline voltage when MI i 0.96 in the overmodulation region I. Figure 22 and 2 how the reult of phae current and linetoline voltage when MI i and 1 in the overmodulation region II. Holding angle h i increaed when the modulation index i increaed at thi region. The region of MI=1 i an operated ixtep mode. And holding angle of each mall ector i 6. Wrpm [1000rpm/div] 20m/div Fig. 19. Experimental reult at MI=0.69; (top) line to line voltage, (middle) phae current, (bottom) peed. Vab [200V/div] Ia [5A/div] Wrpm [1000rpm/div] 10m/div Fig. 20. Experimental reult at MI=0.767; (top) line to line voltage, (middle) phae current, (bottom) peed. Vab [200V/div] 5. Concluion In thi paper, a PI controller for indirect vector control of an induction motor and SVPWM technique for an NPC type level inverter from linear region to ixtep operation wa propoed. With thi propoed overmodulation trategy, the output voltage of the threelevel inverter can be controlled in an extended range from MI=0.907 to the unit. The propoed algorithm wa verified through imulation and experimental reult with the phae current and linetoline voltage waveform a the typical value of the modulation index from the linear region to the overmodulation region. Alo, it wa imulated with the threelevel inverter fed induction motor drive and well verified with regulation performance under the dclink voltage change and peed change condition. Ia [5A/div] Wrpm [1000rpm/div] 10m/div Fig. 21. Experimental reult at MI=0.96; (top) line to line voltage, (middle) phae current, (bottom) peed. Vab [200V/div] Ia [5A/div] Wrpm [1000rpm/div] Fig. 22. Vab [200V/div] Ia [5A/div] 10m/div Experimental reult at MI=0.974; (top) line to line voltage, (middle) phae current, (bottom) peed. Acknowledgment Thi reearch wa upported in part by grant R from the Baic Reearch Program of the Wrpm [1000rpm/div] 10m/div Fig. 2. Experimental reult at MI=1; (top) line to line voltage, (middle) phae current, (bottom) peed.
10 490 Journal of Power Electronic, Vol. 9, No., May 2009 Reference [1] J. Holtz, W. Lotzkat, and A. M. Khambadkone, On continuou control of PWM inverter in the overmodulation range including the ixtep mode, IEEE Tran. Power Electron., Vol. 8, No. 4, pp , 199. [2] D. Lee and G. Lee, A Novel Overmodulation technique for pacevector PWM inverter, IEEE Tran. Power Electron., Vol. 1, No. 6, pp , [] A. Nabae, I. Takahahi, and H. Akagi, A new neutral point clamped PWM inverter, IEEE Tran. Ind. Appl., IA17,(5), pp , [4] A. Horie, S. Saito, S. Ito, T. Takaaki, and H. Ozawa Development of a threelevel converterinverter ytem with IGBT' for AC electric car, in Conf. Rec. IEE Japan IAS Annu. Meet. Rec., pp.7578, [5] E. Akagawa, S. Kawamoto, S. Tamai, H. Okayama, and T. Uemura, Threelevel PWM converterinverter ytem for nextgeneration Shinkanen, in Conf. Rec. IEE Japan IAS Annu. Meet. Rec., pp.8182, [6] C. Ma, T. Kim, D. Kang, and D. Hyun, A imple control trategy for balancing the DClink voltage of neutralpointclamped inverter at low modulation index, Journal of Power Electronic, Vol., No. 4, pp , 200. [7] W. Oh, S. Han, S. Choi, G. Moon, A three phae threelevel PWM witched voltage ource inverter with zero neutral point potentional, Journal of Power Electronic, Vol. 5, No., pp , [8] S. K. Mondal, J. O. P. Pinto, and B. K. Boe, A neuralnetworkbaed pacevector PWM controller for a threelevel voltagefed inverter induction motor drive, IEEE Tran. Ind. Appl., Vol. 8, No., pp , [9] S. K. Modal, B. K. Boe, V. Olechuk, and J. O. P. Pinto, Space vector pule width modulation of threelevel inverter extending operation into overmodulation region, in Conf. Rec. IEEE PESC 02, Vol. 2, pp , [10] S. Jin, Y. Zhong, and W. Cheng, Novel SVPWM overmodulation cheme and it application in threelevel inverter, in Conf. Rec. IEEE PESC 06, pp.16, [11] S. Venugopal and G. Narayanan, An overmodulation cheme for vector controlled induction motor drive, in Conf. Rec. IEEE PEDS 06, pp. 16, [12] J. Lee, J. Choi, and Y. Nihida, Overmodulation trategy of NPC type level inverter for traction drive, in Conf. Rec. ICPE 07, pp , [1] Rowan, T.M., Kerkman, R.J. and Leggate, D, A imple online adaption for indirect field orientation of an induction machine, IEEE Tran. Indutry Application. Vol.27, Iue 4, pp , [14] Bimal K. Boe, Modern Power Electronic and AC Driver, pp.6887, PrenticeHall, Inc., [15] D. Grahame Holme and Thoma A. Lipo, Pule width modulation for power converter, pp , A John wiley & Son, Inc., 200. KyoungMin Kwon received hi B.S. degree in Electrical Engineering from Chungbuk National Univerity in Cheongju, Korea in 2006, where he i currently working toward hi M.S. degree. He wa a Junior Reearch Engineer at the Controller R&D Center in Woojin Indutrial Sytem from 2006 to Hi reearch interet are in ac motor drive with power converter/inverter ytem, wind power generation ytem and energy torage ytem. JaeMoon Lee received hi B.S. and M.S. degree in Electrical Engineering from Chungbuk National Univerity in Cheongju, Korea in 2006 and 2008, repectively. He ha been an Aociate Reearch Engineer at the Drive Reearch Team Automation R&D Center in LS Indutrial Sytem ince Hi reearch interet are in AC machine drive, Power Electronic and Power ytem. JinMok Lee received hi B.S. and M.S. degree in Electrical Engineering from Chungbuk National Univerity in Cheongju, Korea in 2002 and 2004, repectively, where he i currently working toward hi PhD. Hi reearch interet are in power quality analyi and controller deign of power converter and inverter ytem. Jaeho Choi received hi B.S., M.S., and Ph. D in Electrical Engineering from Seoul National Univerity, Seoul, Korea in 1979, 1981, and 1989, repectively. From 1981 to 198, he wa with Jungkyoung Technical College, Daejeon, Korea, a a Fulltime Lecturer. Since 198, he ha been with the School of Electrical and Computer Engineering, Chungbuk National Univerity in Cheongju, Korea, where he i currently a profeor. In 199, 1998 and 200, he wa a viiting profeor at the Univerity of Toronto, Canada, each for one year and he wa a Danfo Viiting Profeor at Aalborg Univerity in Denmark in Hi reearch area include power electronic, power quality problem and olution, energy torage ytem, and renewable energy and microgrid ytem. He i an active member of KIEE, KIPE, and IEEE, and currently the EditorinChief of JPE.
CHAPTER 2 WOUND ROTOR INDUCTION MOTOR WITH PID CONTROLLER
16 CHAPTER 2 WOUND ROTOR INDUCTION MOTOR WITH PID CONTROLLER 2.1 INTRODUCTION Indutrial application have created a greater demand for the accurate dynamic control of motor. The control of DC machine are
More informationOptimal Control for SinglePhase Brushless DC Motor with Hall Sensor
Reearch Journal of Applied Science, Engineering and Technology 5(4): 8792, 23 ISSN: 247459; eissn: 247467 Maxwell Scientific Organization, 23 Submitted: June 22, 22 Accepted: Augut 7, 22 Publihed:
More informationHIGH VOLTAGE DCDC CONVERTER USING A SERIES STACKED TOPOLOGY
HIGH VOLTAGE DCDC CONVERTER USING A SERIES STACKED TOPOLOGY Author: P.D. van Rhyn, Co Author: Prof. H. du T. Mouton Power Electronic Group (PEG) Univerity of the Stellenboch Tel / Fax: 21 88322 email:
More informationTasks of Power Electronics
Power Electronic Sytem Power electronic refer to control and converion of electrical power by power emiconductor device wherein thee device operate a witche. Advent of iliconcontrolled rectifier, abbreviated
More informationResearch on Control Technology of Permanent Magnet Synchronous Motor Based on Iterative Algorithm Liu Yangyang 1c, Yang Guang 2b, Zou Qi 1c,
3rd International Conference on Mechanical Engineering and Intelligent Sytem (ICMEIS 2015) Reearch on Control Technology of Permanent Magnet Synchronou Motor Baed on Iterative Algorithm Liu Yangyang 1c,
More informationActive Harmonic Elimination in Multilevel Converters Using FPGA Control
Active Harmonic Elimination in Multilevel Converter Uing FPGA Control Zhong Du, Leon M. Tolbert, John N. Chiaon Electrical and Computer Engineering The Univerity of Tenneee Knoxville, TN 7996 Email:
More informationAutomatic Voltage Regulator with Series Compensation
Automatic Voltage Regulator with Serie Compenation 1 Neethu Sajeev, 2 Najeena K S, 3 Abal Nabi 1 M.Tech Student, 2, 3 Aitant Proffeor, Electrical and Electronic Dept ILAHIA College of Engineering and Technology
More informationExperiment 3  Singlephase inverter 1
ELEC6.0 Objective he Univerity of New South Wale School of Electrical Engineering & elecommunication ELEC6 Experiment : Singlephae CC Inverter hi experiment introduce you to a inglephae bridge inverter
More informationReview of DSTATCOM for Stability Analysis
IOSR Journal of Electrical and Electronic Engineering (IOSRJEEE) ISSN : 78676 Volume, Iue (MayJune 0), PP 009 Review of DSTATCOM for Stability Analyi Pradeep Kumar, Niranjan Kumar & A.K.Akella 3 3
More informationPERFORMANCE ANALYSIS OF SWITCHED RELUCTANCE MOTOR; DESIGN, MODELING AND SIMULATION OF 8/6 SWITCHED RELUCTANCE MOTOR
5  JATIT. All right reerved. PERFORMANCE ANALYSIS OF SWITCHED RELUCTANCE MOTOR; DESIGN, MODELING AND SIMULATION OF / SWITCHED RELUCTANCE MOTOR Vika S. Wadnerkar * Dr. G. TulaiRam Da ** Dr. A.D.Rajkumar
More informationDesign, Realization, and Analysis of PIFA for an RFID MiniReader
Deign, Realization, and Analyi of PIFA for an RFID MiniReader SUNGFEI YANG ; TROYCHI CHIU ; CHINCHUNG NIEN Indutrial Technology Reearch Intitute (ITRI) Rm. 5, Bldg. 5, 95, Sec., Chung Hing Rd., Chutung,
More informationModulation Extension Control for Multilevel Converters Using Triplen Harmonic Injection with Low Switching Frequency
odulation Extenion Control for ultilevel Converter Uing Triplen Harmonic Injection with ow Switching Frequency Zhong Du, eon. Tolbert, John N. Chiaon Electrical and Computer Engineering The Univerity of
More informationDigital Control of Boost PFC ACDC Converters with Predictive Control
Proceeding of the th International Middle Eat Power Sytem Conference (MEPCON ), Cairo Univerity, Egypt, December 9,, Paper ID 7. Digital Control of Boot PFC ACDC Converter with Predictive Control H.Z.Azazi
More informationProduced in cooperation with. Revision: May 26, Overview
Lab Aignment 6: Tranfer Function Analyi Reviion: May 6, 007 Produced in cooperation with www.digilentinc.com Overview In thi lab, we will employ tranfer function to determine the frequency repone and tranient
More informationPERFORMANCE EVALUATION OF LLC RESONANT FULL BRIDGE DCDC CONVERTER FOR AUXILIARY SYSTEMS IN TRACTION
Électronique et tranmiion de l information PERFORMANCE EVALUATION OF LLC RESONANT FULL BRIDGE DCDC CONVERTER FOR AUXILIARY SYSTEMS IN TRACTION VEERA VENKATA SUBRAHMANYA KUMAR BHAJANA 1, PAVEL DRABEK 2,
More informationDesign of a digitallycontrolled LLC resonant converter
2011 International Conference on Information and Electronic Engineering IPCSIT vol.6 (2011) (2011) IACSIT Pre, Singapore Deign of a digitallycontrolled LLC reonant converter JiaWei huang 1, ShunChung
More informationVoltage Analysis of Distribution Systems with DFIG Wind Turbines
1 Voltage Analyi of Ditribution Sytem with DFIG Wind Turbine Baohua Dong, Sohrab Agarpoor, and Wei Qiao Department of Electrical Engineering Univerity of Nebraka Lincoln Lincoln, Nebraka 685880511, USA
More informationAsymptotic Diversity Analysis of Alamouti Transmit Diversity with QuasiML Decoding Algorithm in TimeSelective Fading Channels
International Journal of Software Engineering and It Application Vol. 9, No. 1 (015), pp. 381388 http://dx.doi.org/10.1457/ijeia.015.9.1.34 Aymptotic Diverity Analyi of Alamouti Tranmit Diverity with
More informationA 5Level ThreePhase Cascaded Hybrid Multilevel Inverter
International Journal of Computer and Electrical Engineering, ol. 3, No. 6, December A 5Leel hreephae Cacaded Hybrid Multileel Inerter P. hongprari Abtract hi paper preent a 5leel threephae cacaded
More informationDesign Calculation and Performance Testing of Heating Coil in Induction Surface Hardening Machine
Vol:, No:6, 008 Deign Calculation and Performance Teting of Heating Coil in Induction Surface Hardening Machine Soe Sandar Aung, Han Phyo Wai, and Nyein Nyein Soe International Science Index, Energy and
More informationM.Sc.(Eng) in building services MEBS Utilities services Department of Electrical & Electronic Engineering University of Hong Kong
MEBS 6000 010 Utilitie ervice Induction Motor peed control Not long ago, induction machine were ued in application for which adjutable peed i not ruired. Before the power electronic era, and the pule width
More informationControl of Electromechanical Systems using Sliding Mode Techniques
Proceeding of the 44th IEEE Conference on Deciion and Control, and the European Control Conference 25 Seville, Spain, December 25, 25 MoC7. Control of Electromechanical Sytem uing Sliding Mode Technique
More informationSingle Phase Transformerless Inverter and its Closed Loop Control for Grid Connected PV Applications
Single Phae Tranormerle Inverter and it Cloed Loop Control or Grid Connected PV Application 1 Pratik D. Rahate & Mini Rajeev 1, Dept. o Electrical Engineering, Fr. C. Rodrigue Intitute o Technology, Navi
More informationHigh Frequency AC Inductor Analysis and Design for Dual Active Bridge (DAB) Converters
Downloaded from orbit.dtu.dk on: Feb 07, 08 High Frequency AC Inductor Analyi and Deign for Dual Active Bridge (DAB) Converter Zhang, Zhe; Anderen, Michael A. E. Publihed in: Proceeding of IEEE Applied
More informationA MultiMachine Power System Stabilizer Using Fuzzy Logic Controller
A MultiMachine Power Sytem Stabilizer Uing Fuzzy Logic Controller Dr. A. Taifour Ali, 2 Dr. Eia Bahier M Tayeb, 3 M. Kawthar A. Adam,2 College of Engineering; Sudan Univerity of Science & Technology;
More informationMIMO Systems: Multiple Antenna Techniques
ADVANCED MIMO SYSTEMS MIMO Sytem: Multiple Antenna Technique Yiqing ZOU, Zhengang PAN, KaiKit WONG Dr, Senior Member of IEEE, Aociate Editor, IEEE TWirele, IEEE CL, and JoC (AP), Senior Lecturer, Department
More informationDesign Calculation and Performance Testing of Heating Coil in Induction Surface Hardening Machine
Deign Calculation and Performance Teting of Heating Coil in Induction Surface Hardening Machine Soe Sandar Aung, Han Phyo Wai, and Nyein Nyein Soe Abtract The induction hardening machine are utilized in
More informationSimulation of Space Vector Modulation in PSIM
Simulation of Space Vector Modulation in PSIM Vishnu V Bhandankar 1 and Anant J Naik 2 1 Goa College of Engineering Power and Energy Systems Eng., Farmagudi, Goa 403401 Email: vishnu.bhandankar@gmail.com
More informationAnalysis of Voltage Source Inverters using Space Vector PWM for Induction Motor Drive
IOSR Journal of Electrical and Electronics Engineering (IOSRJEEE) ISSN: 22781676 Volume 2, Issue 6 (SepOct. 2012), PP 1419 Analysis of Voltage Source Inverters using Space Vector PWM for Induction
More informationMethod to Improve Range and Velocity Error Using Deinterleaving and Frequency Interpolation for Automotive FMCW Radars
International Journal o Signal Proceing, Image Proceing and Pattern Recognition Vol. 2, No. 2, June 2009 Method to Improve Range and Velocity Error Uing Deinterleaving and Frequency Interpolation or Automotive
More informationSelfProgrammable PID Compensator for Digitally Controlled SMPS
6 IEEE COMPEL Workhop, Renelaer Polytechnic Intitute, Troy, NY, USA, July 1619, 6 SelfProgrammable PID Compenator for Digitally Controlled SMPS Zhenyu Zhao and Alekandar Prodi Univerity of Toronto Toronto,
More informationDistribution Transformer Due to Nonlinear Loads
RESEARCH ARTICLE Derating of OPEN ACCESS Ditribution Tranformer Due to Nonlinear Load Vihakha L. Mehram 1, Mr. S. V. Umredkar 2 Department of Electrical EngineeringShri Ramdeobaba College of Engineering
More informationRenewable Energy 36 (2011) 2508e2514. Contents lists available at ScienceDirect. Renewable Energy. journal homepage:
Renewable Energy 36 (2011) 2508e2514 Content lit available at ScienceDirect Renewable Energy journal homepage: www.elevier.com/locate/renene Implementation of photovoltaic array MPPT through fixed tep
More informationIntegral Control AGC of Interconnected Power Systems Using Area Control Errors Based On Tie Line Power Biasing
ISSN (Online) 232 24 ISSN (Print) 232 5526 Vol. 2, Iue 4, April 24 Integral Control AGC of Interconnected Power Sytem Uing Area Control Error Baed On Tie Line Power Biaing Charudatta B. Bangal Profeor,
More informationAn Induction Motor Control by Space Vector PWM Technique
An Induction Motor Control by Space Vector PWM Technique Sanket Virani PG student Department of Electrical Engineering, Sarvajanik College of Engineering & Technology, Surat, India Abstract  This paper
More informationFlux estimation algorithms for electric drives: a comparative study
Flux etimation algorithm for electric drive: a comparative tudy Mohamad Koteich To cite thi verion: Mohamad Koteich. Flux etimation algorithm for electric drive: a comparative tudy. International Conference
More informationDeterministic Deployment for Wireless Image Sensor Nodes
Send Order for Reprint to reprint@benthamcience.ae 668 The Open Electrical & Electronic Engineering Journal, 04, 8, 668674 Determinitic Deployment for Wirele Image Senor Node Open Acce Junguo Zhang *,
More informationDynamic Induction Machine Model Accounting for Stator and Rotor Slotting
1 Dynamic Induction Machine Model Accounting for Stator and Rotor Slotting Gojko Jokimović, Jakša Riger, Thoma Wolbank, Nedjeljko Perić, Mario Vašak, Goran Stojčić, Vinko Lešić Abtract A method for dynamic
More informationIJSRD  International Journal for Scientific Research & Development Vol. 3, Issue 11, 2016 ISSN (online):
IJSRD  International Journal for Scientific Reearch & Development Vol. 3, Iue 11, 2016 ISSN (online): 23210613 Deign and Analyi of IIR Peak & Notch Ravi Choudhary 1 Pankaj Rai 2 1 M.Tech. Student 2 Aociate
More informationAnalysis of A 2Phase Stator Winding By Winding Function Methodology
IOSR Journal of Engineering (IOSRJEN) ISSN (e): 225321, ISSN (p): 22788719 Vol. 5, Iue 3 (March. 15), V1 PP 1115 www.iorjen.org Analyi of A 2Phae Stator Winding By Winding Function Methodology * I.K.Onwuka,
More informationA CONTROL STRATEGY FOR PARALLEL VOLTAGE SOURCE INVERTERS
A CONTROL STRATEGY FOR PARALLEL VOLTAGE SOURCE INVERTERS Telle B. Lazzarin, Guilherme A. T. Bauer, Ivo Barbi Federal Univerity of Santa Catarina, UFSC Power Electronic Intitute, INEP Florianópoli, SC,
More informationHigh Efficiency Single Phase Inverter Design
High Efficiency Single Phae Inverter Deign Didi Itardi Electric Machine Control Laboratory, Electrical Engineering Departement Politeknik Negeri Batam, Indoneia itardi@polibatam.ac.id Abtract The olar
More informationRESEARCH ON NEAR FIELD PASSIVE LOCALIZATION BASED ON PHASE MEASUREMENT TECHNOLOGY BY TWO TIMES FREQUENCY DIFFERENCE
RESEARCH ON NEAR FIED PASSIVE OCAIZATION BASED ON PHASE MEASUREMENT TECHNOOGY BY TWO TIMES FREQUENCY DIFFERENCE Xuezhi Yan, Shuxun Wang, Zhongheng Ma and Yukuan Ma College of Communication Engineering
More informationCooling Fan Bearing Fault Identification Using Vibration Measurement
Cooling Fan Bearing Fault Identification Uing Vibration Meaurement Qiang Miao * School of Mechanical, Electronic and Indutrial Engineering Univerity of Electronic Science and Technology of China Chengdu,
More informationAvailable online at ScienceDirect. Procedia Technology 17 (2014 )
Available online at www.ciencedirect.com ScienceDirect Procedia Technology 17 (014 ) 791 798 Conference on Electronic, Telecommunication and Computer CETC 013 DCDC buck converter with reduced impact Miguel
More informationThe Cascode and Cascaded Techniques LNA at 5.8GHz Using TMatching Network for WiMAX Applications
International Journal of Computer Theory and Engineering, Vol. 4, No. 1, February 01 The Cacode and Cacaded Technique LNA at 5.8Hz Uing TMatching Network for WiMAX Application Abu Bakar Ibrahim, Abdul
More informationOnLine DeadTime Compensation Method Based on Time Delay Control
IEEE TRANSACTIONS ON CONTROL SYSTEMS TECHNOLOGY, VOL. 11, NO. 2, MARCH 2003 279 OnLine DeadTime Compensation Method Based on Time Delay Control HyunSoo Kim, KyeongHwa Kim, and MyungJoong Youn Abstract
More informationSimulation model of a Permanent Magnet Synchronous Generator for grid studies.
International Conference on Renewable Energie and Power Quality (ICREPQ 14) Cordoba (Spain), 8 th to 1 th April, 214 exçxãtuäx XÇxÜzç tçw céãxü dâtä àç ]ÉâÜÇtÄ (RE&PQJ) ISSN 217238 X, No.12, April 214
More informationSimulation study on Sinusoidal Pulse Width Modulation based on Digital Signal Processing Technique
Advanced Science and echnology Letter Vol.83 (ISA 015), pp.59 http://dx.doi.org/10.1457/atl.015.83.06 Simulati tudy Sinuoidal Pule Width Modulati baed Digital Signal Proceing echnique Changyg Yin 1, Xiaoyu
More informationMODAL ANALYSIS OF A BEAM WITH CLOSELY SPACED MODE SHAPES
ME 164 Senior Captone Deign The Cooper Union Spring 2011 MODAL ANALYSIS O A BEAM WITH CLOSELY SPACED MODE SHAPES Eglind Myftiu The Cooper Union New York City, NY, USA ABSTRACT Thi paper invetigate the
More informationA Feasibility Study on Frequency Domain ADC for ImpulseUWB Receivers
A Feaibility Study on Frequency Domain ADC for ImpuleUWB Receiver Rajeh hirugnanam and Dong Sam Ha VV (Virginia ech VLSI for elecommunication Lab Department of Electrical and Computer Engineering Virginia
More informationExperiment 8: Active Filters October 31, 2005
Experiment 8: Active Filter October 3, In power circuit filter are implemented with ductor and capacitor to obta the deired filter characteritic. In tegrated electronic circuit, however, it ha not been
More informationMitigation of Harmonics by Hysteresis Control Technique of VSI Based Statcom
Mitigation of Harmonic by Hyterei Control Technique of S Baed Statcom Srikanth D Aitant Profeor Department of Electrical and Electronic Engineering ignan ntitute of Technology and Science, ignan Hill Dehmukhi
More informationA Solution for DCDC Converters Study
Advance in Automatic ontrol, Modelling & Simulation A Solution for DD onverter Study MIHAI RAA, GABRIELA RAA, DREL ERNMAZU, LEN MANDII, RISINA PRDAN Faculty of Electrical Engineering and omputer Deign
More informationDIGITAL COMMUNICATION
DEPARTMENT OF ELECTRICAL &ELECTRONICS ENGINEERING DIGITAL COMMUNICATION Spring 2010 Yrd. Doç. Dr. Burak Kelleci OUTLINE Line Code Differential Encoding Regeneration, Decoding and Filtering Delta Modulation
More informationSynthetic aperture radar raw signal simulator for both pulsed and FMCW modes
Computational Method and Experimental Meaurement XV 43 Synthetic aperture radar raw ignal imulator for both puled and FMCW mode P. Serafi C. Lenik & A. Kawalec Intitute of adioelectronic, Military Univerity
More informationA Simple DSP Laboratory Project for Teaching RealTime Signal Sampling Rate Conversions
A Simple DSP Laboratory Project for Teaching RealTime Signal Sampling Rate Converion by Li Tan, Ph.D. lizhetan@pnc.edu Department of ECET Purdue Univerity North Central Wetville, Indiana Jean Jiang, Ph.D.
More informationDesign of an LCC currentoutput resonant converter for use as a constant current source
Deign of an L currentoutput reonant converter for ue a a contant current ource A. J. Gilbert, D. A. Stone,. M. Bgham*, M. P. Foter SHEFFELD UNVERSTY Department of Electronic & Electrical Engeerg Mapp
More informationHybrid PWM switching scheme for a three level neutral point clamped inverter
Hybrid PWM switching scheme for a three level neutral point clamped inverter Sarath A N, Pradeep C NSS College of Engineering, Akathethara, Palakkad. sarathisme@gmail.com, cherukadp@gmail.com Abstract
More informationFormatting and Baseband. Formatting & Baseband. Page 1. Formatting and Baseband Modulation. CSE4214 Digital Communications
CSE4214 Digital Communication CSE4214 Digital Communication Chapter 2 Formatting Formatting and Baeband Modulation Formatting & Baeband Formatting and Baeband 3 4 Page 1 1 What i Formatting? Information
More informationCalculation of Power Transformer Shortcurrent Force Hongkui LI
International Power, Electronic and Material Engineering Conference (IPEMEC 2015) Calculation of Power Tranformer Shortcurrent Force Hongkui LI School of cience,shenyang Ligong Unierity,Shenyang, 110159,China
More informationA Flexible OFDM System Simulation Model. with BER Performance Test
Contemporary Engineering Science, Vol. 5, 2012, no. 8, 365374 A Flexible OFDM Sytem Simulation Model with BER Performance Tet Aladdin Amro AlHuein Bin Talal Univerity, Jordan Department of Communication
More informationThe Lowfrequency Compensation of the Vibration Sensor s Amplitudefrequency Characteristics
Senor & Tranducer, Vol. 8, Iue, October 4, pp. 7 Senor & Tranducer 4 by IFSA Publihing, S. L. http://www.enorportal.com The Lowfrequency Compenation of the Vibration Senor Amplitudefrequency Characteritic
More informationExperiment 4: Active Filters
Experiment : Active Filter In power circuit filter are implemented with ductor and capacitor to obta the deired filter characteritic. In tegrated electronic circuit, however, it ha not been poible to realize
More informationSmall Signal Analysis of the LCCType Parallel Resonant Converter
I. INTRODUCTION Small Signal Analyi of the LCCType Parallel Reonant Converter ISSA BATARSEH, Senior Member, IEEE C. MEGALEMOS Univerity of Central Florida M. SZNAIER, Member, IEEE Pennylvania State Univerity
More informationPerformance Analysis of SPWM and SVPWM Based Three Phase Voltage source Inverter. K. Latha Shenoy* Dr. C.Gurudas Nayak** Dr. Rajashekar P.
IJCTA, 9(21), 2016, pp. 0714 International Science Press Performance Analysis of SPWM and SVPWM Based Three Phase Voltage source Inverter 07 Perf erfor ormance Analysis of SPWM and SVPWM Based Thr hree
More informationSynthesis of UltraWideband Array Antennas
Synthei of UltraWideband Array Antenna Hamad W. Alawaha Diertation ubmitted to the faculty of Virginia Polytechnic Intitute and State Univerity in partial fulfillment of the requirement for the degree
More informationInfluence of Sea Surface Roughness on the Electromagnetic Wave Propagation in the Duct Environment
RADIOENGINEERING, VOL. 19, NO. 4, DECEMBER 1 61 Influence of Sea Surface Roughne on the Electromagnetic Wave Propagation in the Duct Environment Xiaofeng ZHAO, Sixun HUANG Intitute of Meteorology, PLA
More informationMaximum Constant Boost Control of the ZSource Inverter
Maximum Constant Boost Control of the ZSource Inverter Miaosen Shen 1, Jin Wang 1,Alan Joseph 1, Fang Z. Peng 1, Leon M. Tolbert, and Donald J. Adams 1 Michigan State University Department of Electrical
More informationA CALIBRATION SYSTEM FOR LASER VIBROMETERS AT NIMT
XX IMEKO World Congre Metrology for Green Growth September 9 14, 2012, Buan, Republic of Korea A CALIBRATION SYSTEM FOR LASER VIBROMETERS AT NIMT C. Hirunyapruk, P. Rattanangkul, B. Thummawut, V. Plangangma
More informationA New LowStress BuckBoost Converter for UniversalInput PFC Applications
A New LowStre BuckBoot Converter for Univeralnput PFC Application LQJXDQ&KHQ'UDJDQDNLPYLüDQG5EHUW(ULFNQ Colorado Power Electronic Center Deparent of Electrical and Computer Engineering Univerity of
More informationSpeed control of sensorless BLDC motor with two side chopping PWM
IOSR Journal of Electrical and Electronics Engineering (IOSRJEEE) eissn: 22781676,pISSN: 23203331, Volume 6, Issue 3 (May.  Jun. 2013), PP 1620 Speed control of sensorless BLDC motor with two side
More informationCommunication Systems, 5e
Communication Sytem, 5e Chapter 6: Sampling and pule modulation A. Bruce Carlon Paul B. Crilly 00 The McGrawHill Companie Chapter 6: Sampling and pule modulation Sampling theory and practice Puleamplitude
More informationPrevious lecture. Lecture 5 Control of DVD reader. TheDVDreader tracking problem. Can you see the laser spot?
Lecture 5 Control of DVD reader Previou lecture Focu control Radial control (Track following) Lecture 4: Specification in frequency domain Loop haping deign Problem formulation Modeling Specification Focu
More informationFixed Structure Robust Loop Shaping Controller for a BuckBoost Converter using Genetic Algorithm
Proceeding of the International ulticonference of Engineer and Computer Scientit 008 Vol II IECS 008, 9 arch, 008, Hong ong Fixed Structure Robut Loop Shaping Controller for a BuckBoot Converter uing
More informationA New Technique to TEC Regional Modeling using a Neural Network.
A New Technique to TEC Regional Modeling uing a Neural Network. Rodrigo F. Leandro Geodetic Reearch Laboratory, Department of Geodey and Geomatic Engineering, Univerity of New Brunwick, Fredericton, Canada
More informationNOISE BARRIERS CERC 1. INTRODUCTION
Augut 217 P33/1B/17 NOISE BARRIERS CERC In thi document ADMS refer to ADMSRoad 4.1, ADMSUrban 4.1 and ADMSAirport 4.1. Where information refer to a ubet of the lited model, the model name i given in
More informationTSfuzzy controlled DFIG based Wind Energy Conversion Systems
TSfuzzy controlled DFIG baed Wind Energy Converion Sytem S. Mihra, Senior Member, IEEE, Y. Mihra, Student Member, IEEE, Fangxing Li, Senior Member IEEE, Z. Y. Dong, Senior Member, IEEE Abtract Thi paper
More informationA VHDLAMS Simulation Methodology for Transient Supply Current Extraction
A VHDLAMS Simulation Methodology for Tranient Supply Current Extraction Richard Perdriau */**, Damien Lambert */***, AnneMarie Trulleman **, Mohamed Ramdani * and JeanLuc Levant *** * Ecole Supérieure
More informationPiezoelectric Device with Volume Elastic Wave for Ultrasonic Pulses Generating
Piezoelectric Device with Volume Elatic Wave for Ultraonic Pule Generating MARIAN PEARSICĂ Henri Coanda Air Force Academy Mihai Viteazu St. 160, 00, Braov, ROMANIA marianpearica@yahoo.com http://www.afahc.ro
More informationSampling Theory MODULE XIII LECTURE  41 NON SAMPLING ERRORS
Sampling Theory MODULE XIII LECTURE  41 NON SAMPLING ERRORS DR. SHALABH DEPARTMENT OF MATHEMATICS AND STATISTICS INDIAN INSTITUTE OF TECHNOLOG KANPUR 1 It i a general aumption in ampling theory that the
More informationSVPWM Based Speed Control of Induction Motor with Three Level Inverter Using Proportional Integral Controller
SVPWM Based Speed Control of Induction Motor with Three Level Inverter Using Proportional Integral Controller Vikramarajan Jambulingam Electrical and Electronics Engineering, VIT University, India. Abstract
More informationAdaptive Groundroll filtering
Adaptive Groundroll filtering David Le Meur (CGGVerita), Nigel Benjamin (CGGVerita), Rupert Cole (Petroleum Development Oman) and Mohammed Al Harthy (Petroleum Development Oman) SUMMARY The attenuation
More informationAPPLICATION OF PHASOR MEASUREMENT UNIT IN SMART GRID
APPLICATION OF PHASOR MEASUREMENT UNIT IN SMART GRID 1 Chandarani Sutar, 2 Dr. K. S. Verma 1 RRSIMT Amethi (U.P.), 2 KNIT Sultapur (U.P.) Email: 1 Chandarani_t@yahoo.com, 2 kv211@rediffmail.com, AbtractA
More informationSPEED CONTROL OF PERMANENT MAGNET SYNCHRONOUS MOTOR USING VOLTAGE SOURCE INVERTER
SPEED CONTROL OF PERMANENT MAGNET SYNCHRONOUS MOTOR USING VOLTAGE SOURCE INVERTER Kushal Rajak 1, Rajendra Murmu 2 1,2 Department of Electrical Engineering, B I T Sindri, (India) ABSTRACT This paper presents
More informationPilot Symbol Assisted Modulation using 16Level QAM for a Wireless System
Pilot Symbol Aited Modulation uing 16Level QAM for a Wirele Sytem Pilot Symbol Aited Modulation uing 16Level QAM for a Wirele Sytem Angela DARIE, Ion BOGDAN Rezumat. Modulaţia cu imbol pilot(psam) ete
More informationNovel SRM Drive Systems Using Variable DCLink Voltage
Novel SRM Drive Systems Using Variable DCLink Voltage 1 JPE 1131 Novel SRM Drive Systems Using Variable DCLink Voltage DoHyun Jang Dept. of Electrical Engineering, Hoseo University, Asan, Korea Abstract
More informationObservation and Calculation of Different Harmonics in Fly Back Converter
International Journal of Recent Develoment in Engineering and Technology Webite: www.ijrdet.com (ISSN 23476435 (Online)) Volume 2, Iue 3, March 214) Obervation and Calculation of Different Harmonic in
More informationSETTING UP A GRID SIMULATOR A. Notholt 1, D. CollMayor 2, A. Engler 1
SETTING U A GRID SIMULATOR A. Notholt, D. CollMayor 2, A. Engler Intitut für Solare Energieverorgungtechnik (ISET). Königtor 9. D349 Kael anotholt@iet.unikael.de 2 Department of hyic. Univerity of Balearic
More informationDIRECT POWER CONTROL OF A DFIGBASED WIND TURBINE UNDER UNBALANCED GRID VOLTAGE WITHOUT ROTOR POSITION SENSOR
DRECT POWER CONTROL OF A DFGBASED WND TURBNE UNDER UNBALANCED GRD VOLTAGE WTHOUT ROTOR POSTON SENSOR AL ZANLO, SAYYED ASGHAR GHOLAMAN * AND MOHAMMAD VERJ KAZEM Faculty of Electrical and Computer Engineering,
More informationResearch Article The Study of Operation Modes and Control Strategies of a Multidirectional MC for Battery Based System
Mathematical Problem in Engineering Volume 215, Article ID 45274, 14 page http://dx.doi.org/1.1155/215/45274 Reearch Article The Study of Operation Mode and Control Strategie of a Multidirectional Mor
More informationModeling and Analysis of CommonMode Voltages Generated in Medium Voltage PWMCSI Drives
IEEE TRANSACTIONS ON POWER ELECTRONICS, VOL. 18, NO. 3, MAY 2003 873 Modeling and Analysis of CommonMode Voltages Generated in Medium Voltage PWMCSI Drives José Rodríguez, Senior Member, IEEE, Luis Morán,
More informationPower Quality Disturbance Data Compression Using Wavelets Transform
Internional Conference on Computer, Sytem and Electronic Engineering (ICSCEE') April 6, Johanneburg (South Africa) Power Quality Diturbance Da Compreion Uing Wavelet Tranform S. Mohammadzadeh, S. Gh. Seifoad,
More information2.1 Circuit transform CHAPTER FDSM 2.0
2CHAPTER 2. Circuit tranform CHAPTER The firtorder FDSM 2. Thi chapter tart by tranforming the conventional DSM into a nonfeedback equivalent whoe new propertie are dicued. The firtorder FDSM principle
More informationAMONG the different types of currentcontrolled pulsewidth
2648 IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, VOL. 54, NO. 5, OCTOBER 2007 Novel Current Error Space Phasor Based Hysteresis Controller Using Parabolic Bands for Control of Switching Frequency Variations
More informationSpeed control of three phase induction motor drive using SVPWM control scheme
Speed control of three phase induction motor drive using SVPWM control scheme 1 Gajjar Jahnavibahen B., 2 Mr.Ghanshyam Gajjar 1 MEPEED Student, Dept. of Electrical Engineering, MEFGI, Rajkot, 2 SR. Engineer,
More informationAcoustic Noise Reduction in Single Phase SRM Drives by Random Switching Technique
Vol:3, o:, 9 Acoustic oise Reduction in Single Phase SRM Drives by Random Switching Technique MinhKhai guyen, YoungGook Jung, and YoungCheol Lim International Science Index, Electronics and Communication
More informationSIMULINK for Process Control
SIMULINK for Proce Control Simulink for Control MATLAB, which tand for MATrix LABoratory, i a technical computing environment for highperformance numeric computation and viualization. SIMULINK i a part
More informationDigital joint phase and sampling instant synchronisation for UMTS standard
Digital joint phae and ampling intant ynchroniation for UMTS tandard Youef Serretou, Koai Raoof, Joël Lienard To cite thi verion: Youef Serretou, Koai Raoof, Joël Lienard. Digital joint phae and ampling
More informationSimulation & Implementation Of Three Phase Induction Motor On Single Phase By Using PWM Techniques
Simulation & Implementation Of Three Phase Induction Motor On Single Phase By Using PWM Techniques Ashwini Kadam 1,A.N.Shaikh 2 1 Student, Department of Electronics Engineering, BAMUniversity,akadam572@gmail.com,9960158714
More information