Rotor s Mass Unbalance Compensation Control on Bearingless Permanent Magnet Synchronous Motors for Minimizing the Control Currents
|
|
- Britney Morgan
- 5 years ago
- Views:
Transcription
1 Sensors & Transducers, Vol. 75, Issue 7, Jul 4, pp Sensors & Transducers 4 b IFSA Publishing, S. L. Rotor s Mass nbalance Compensation Control on Bearingless Permanent Magnet Snchronous Motors for Minimizing the Control Currents Tao ZHANG, Wei NI, Xiaohui WANG, Chen ZHANG, Hongun JIA Facult of electronic and Electrical Engineering, Huaiin Institute of Technolog, Huaian, Jiangsu 35, China School of information and control engineering, Nanjing niversit of Information Science and Technolog, Nanjing, Jiangsu 44, China zhangtaohit@6.com Received: 4 Ma 4 /Accepted: 3 June 4 /Published: 3 Jul 4 Abstract: The vibration originated from the rotor s unbalance mass impacts on the current oscillation. When the rotor rotating at high speed, power amplifier circuit will be burned down b ecessive vibration control current, and at the same time the ecessive control force will be generated. The vibrating force transfers to frame, which causes the sstem vibration and influence the dnamic properties and safe operation. So unbalance compensation on the rotating machine is necessar, especiall for the high speed bearingless motor. Based on introductions of the rotor motion equation of bearingless permanent magnet snchronous motor (BPMSM) and analsis on generation mechanism of unbalance force, feed-forward compensation controller is designed on the technolog of adaptive notch filter in this paper. The control sstem is simulated with Matlab/Simulink toolbo. The simulation results have shown that the current oscillation can be minimizing b the controller, and vibrating force is eliminated with the rotor rotating around inertia center. Copright 4 IFSA Publishing, S. L. Kewords: Bearingless motor, Bearingless permanent magnet motor, Suspended rotor, Compensation control, Mass unbalance.. Introduction The high-speed motor has some remarkable advantages, such as: ) It possesses smaller volume, less row material, higher power densit, and higher efficienc; ) It can drive the load directl without the transmission mechanism, which means less transmission losses and noise; 3) The rotor of highspeed motor has less rotational inertia and thus has higher dnamic response. For its promising application in special electrical transmission and high-speed direct-drive fields, the high-speed motor has becoming the international research topics in the electrical engineering fields [-3]. The bearingless permanent magnet schronous motor has some merits, such as no friction, no lubrication and no sealing, high speed, high precision, high power densit and long life. It has being innovated the traditional supporting forms of high speed motors [5, 6]. But the rotor vibration rejection problem has alwas been a critical issue in bearingless motor sstems. The vibration originated from the rotor s unbalance mass impacts on the current oscillation. When the rotor rotating at high speed, power amplifier circuit will be burned down b ecessive vibration control current. The vibrating force transfers to frame, which causes the sstem vibration and influence the dnamic properties and 5
2 Sensors & Transducers, Vol. 75, Issue 7, Jul 4, pp safe operation. It is desirable to eliminate the rotor vibration in high speed rotation machiner. The feedforward compensation is alwas used to reject the rotor vibration. But it is the ke technolog to estimate the unknown amplitude, frequenc and phase of vibration signals. The researches have been researched a vast kind of methods for the rotor vibration control. These methods onl fit for low speed mainl based on the minimum the current method, the minimum displacement method, and so on. But, when the rotor rotates in high speed, the above methods can not reject the sstem vibration. In this paper, the vibration producing mechanism of bearingless permanent magnet tpe motor is introduced. The rotor dnamics equations were deduced. Then, based the decouple control sstem of bearingless permanent magnet snchronous motor, the feedforward compensation control is designed to reject the rotor mass unbalance vibration using notch filter technolog. Finall, the simulation researches are carried out using Matlab/Simulink. The research results have shown that the rotor vibration rejection method proposed in this paper can reject the power amplifier current oscillations well. The rotor vibration of BPMSM was eliminated. So the rotor rotates around the center of inertia freel.. Producing Mechanism and Mathematical Model.. Producing Mechanism Fig. shows production mechanism of radial suspension force and torque in BPMSM. There are three magnetic fields in BPMSM, suspension windings magnetic fields with P B pole pair number, torque winding magnetic field and rotor permanent magnet field with same P M pole pair number. The torque is produced as same as in the traditional PMSM. Compared with the rotor permanent magnet field, the amplitude of torque winding magnetic field is ver small and thus its influence on radial suspension force can be negligible. The radial suspension force is mainl produced b the interaction between rotor magnetic field and suspension winding magnetic field. The direction of resultant radial suspension force is pointed to the increase of the magnetic field... Mathematical Model In order to suspend the rotor steadil, the BPMSM must produce the stable controllable radial suspension force in single direction when the rotor magnetic field, torque winding magnetic field and suspension winding magnetic field rotate in high speed. According to the generation principle of Mawell forces, the torque winding magnetic field and suspension winding magnetic field must rotate in the same direction and rotation mechanical angular velocit must satisf P M =P B ± and P M M =P B B =. Where, M, B are the rotation mechanical angular velocit of the torque winding magnetic and suspension winding magnetic field, respectivel. is the corresponding electrical angular velocit. In other words, the rotation electrical angular velocities of suspension winding magnetic field, rotor permanent magnet field and torque winding magnetic field must be equal. The suspension winding magnetic field and torque winding magnetic field are generated b the three phase smmetric currents in two sets of three phase smmetric stator windings. According to the relationships among the winding pole pair number, mechanical angular velocit and electrical angular velocit in motors, the necessar conditions which the BPMSM can produce the single direction stable controllable radial suspension force is the same phase sequence in two sets of stator windings and the same angular frequenc in stator windings currents. The two sets of winding distributions inserted into stator with the same phase sequence are shown in Fig.. In BPMSM with this stator, the resultant radial suspension force pointed to positive direction when the angular difference between suspension winding magnetic field and torque winding magnetic field is equal to zero. z - c - b - a - z b c - - z - q N a (a) Torque S N F 8 S N (b) Force Fig.. Production mechanism of radial suspension force and torque. S z - Fig.. Windings distribution. The three phase smmetric currents are applied to the two sets of stator windings. 5
3 Sensors & Transducers, Vol. 75, Issue 7, Jul 4, pp The currents in torque windings can be simpl written as i = IM cos( t θm) i = IM cos( t θm), () iz = IM cos( t 4 θm) The currents in radial suspension windings can be simpl written as ia = IBcos( t θb) ib = IBcos( t θb), () ic = IBcos( t 4 θb) According to the above analsis, using the Mawell's stress tensor method, the radial suspension force in θ direction can be epressed as follow Bg ( q, t) df ( q, t) = ds, (3) m where B g is the air gap flu densit, μ is the permeabilit of vacuum, ds is the infinitesimal area of the rotor surface. When the magnetic field fundamental wave is onl considered, the air-gap flu densit of the P B pole pair number suspension windings magnetic field generated b currents in suspension winding can be epressed as follow. B (, t q ) = B cos( w t-q - Pq), (4) b B B B B P M pole pair number torque windings magnetic field generated b currents in torque winding and permanent magnets mounted onto the rotor surface can be written as follow. B (, t q ) = B cos( w t-q - P q), (5) m M M M M Thus, the resultant air gap flu densit is given as follow. B (, t q ) = B (, t q) B (, t q), (6) g b m In the BPMSM with magnets surface-mounted rotor, the magnetic field generated b the currents in torque windings can be neglected compared to that generated b permanent magnets. From (3), the radial suspension force on the rotor surface can be epressed as follow. [ Bb( t, q) Bm( t, q)] rl df ( q, t) = dq, (7) m The resultant radial suspension force in and - direction on - static coordinate can be concluded b the integral along the rotor circumference. π [ Bb( t, θ) Bm( t, θ)] rl FX = cosθdθ μ, (8) π [ Bb( t, θ) Bm( t, θ)] rl FY = sinθdθ μ At the same time, considering the necessar conditions of producing the single direction stable controllable suspension force P B =P M ± and P B B = P M M =, the radial resultant suspension force can be epressed as follow. π rlbmbb FX = cos( θb θm) μ, (9) π rlbmbb FY = sin( θb θm) μ The radial suspension force onl decided b the rotor radius r, rotor length l and amplitudes of magnetic fields generated b permanent magnets and suspension windings magnetic fields B M, B B. The direction of the resultant radial suspension force depends on the electricit angular degree difference between the suspension windings magnetic field and torque windings magnetic field. In other words, the direction of the resultant radial suspension force depends on initial phase angular difference between suspension winding current and torque winding current. The torque is generated b the interaction between the torque windings magnetic field and rotor permanent magnets field. When the rotor is operating in the center of motor, the torque can be epressed as follow. T = p i, () e M PM Mq 3. Rotor Dnamic Equations The simplified model of rigid rotor in bearingless motor is shown in Fig. 3. When the rotor rotating angular velocit is, the central ais of inertia c is not coincided with the geometric central ais m due to the eistence of mass imbalance. So in the rotating coordinate sstem m, the center of inertia can be epressed as follow. c = m ρcos( β t), () c = m ρsin( β t) where ρ is the eccentricit between the center of inertia and geometric central. is the rotating angular velocit. β is the initial phase angle. For simple analzation, the influence of groscopic effect is neglected. sing Newton's law, the motion equations of rotor geometric center in and direction can be epressed as follow. 53
4 Sensors & Transducers, Vol. 75, Issue 7, Jul 4, pp N u c( c, c ) k c c ρ m Rotor π/4 k c r m m ρ χ tβ m m (a) (b) Fig. 3. Simplified model of a rigid rotor sstem suspended in BPMSM. d m dm M c km = Mg, () d m dm M c km = Mg where M is the eccentric mass of the rotor. When the rotor rotates, the centrifugal force produced b eccentric mass is decomposed to and direction as follow. Fz = Mρ cos( t β ), (3) Fz = Mρ sin( t β ) The centrifugal force is added to the equation (). The motion equations of rotor geometric center in and direction can be epressed as follow. d m dm M c km Mg M t d m dm M c km Mg M t = ρ cos( β ) = ρ sin( β) (4) Then, the m and m can be got from soluting the equation (4). w where A= r, k w 6c w M (- ) k Mk k M M w B = r. k w 6c w M ( - ) k Mk k M M From the equation (5), the rotor rotation center deviated from the geometric center the centrifugal force. The displacement signals measured b and direction displacement sensor are sine wave. The phase difference is 9º. Through the PID controller, the control current waveform is also sine waveform. The power amplifier produced the control forces to enforce the rotor rotation around the geometric center ais. According to action force and reaction force principle, unbalance vibration will be produced. Mg m = Acos( t β arctan[ ξ / ( )]) k / / M k M k, (5) Mg m Bsin( t β arctan[ ξ / ( )]) = k / k / M k M From equation (5) can be seen that the displacement signals consist of the vibration signal caused b the centrifugal force for rotor mass imbalance. the amplitude of vibration signal is proportional to the square of the speed. When the speed is ver high, the control current in power amplifier will be saturation. At the same time, the vibration will transfer to the base of motor, which caused the sstem vibration. The compensation control of rotor mass unbalance proposed in this paper is deviating the vibration signal from the rotor displacement signal and compensate to the displacement signal. In other words, the vibration components are removed from the displacement signal. The displacement close-loop does not control the vibration components. The rotor rotates around the center of inertia and the vibration is eliminated. At the same time, the control current oscillation in power amplifier is also reduced. 4. Control Sstem Design The bearingless permanent magnet snchronous motor rotor mass unbalance compensation control sstem is shown in Fig. 4, which consists of the feedforward compensation control unit and the rotor field decoupling control close loop. 54
5 Sensors & Transducers, Vol. 75, Issue 7, Jul 4, pp X s Y s Feed-forward Control X s c Y s c PID PID q PID F F i = i q θ Force/ Current VR i α i β i α i β /3 i A i B i C i A i B CRPWM /3 CRPWM i C i A i B i C i A i B i C PMSM Displacement Sensor θ Fig. 4. Simulation diagram of the control sstem on vibration control for bearingless PMSM. 4.. Displacement Control The displacements in and direction is detected b the radial displacement sensor. and are the given signals in displacement control close loop. The compensation signals c and c are etracted from the feedback signals X s and Y s. The error among the given signals, compensation signals and feedback signals pass through the PID controller. The radial forces command values F and F will be produced. Then, using coordinate transformation, the control currents command values i α, i β are got. Finall, based on the 3/ transformation, the currents command values in radial coils i A, i B and i C are got. The radial displacements are controllable through adjusting the currents in suspension coils. 4.. Torque Control The angular velocit feedback signal of rotor is detected b the velocit sensor. The error between the feedback signal and given signal is calculated. When the error signal pass through the PID controller, the current command value of q-ais is produced. Then, using the transformation from the two-phase rotating coordinate sstem to the twophase stationar coordinate sstem, the current command values of i α and i β are produced. The current command values of i A, i B and i C are produced using /3 transformation. The velocit of rotor is controllable through adjusting the currents of torque coils Feed-forward Control For simple analsis, it is assumed that the rotor onl have the static unbalance for inertial center misalignment with the geometr center. The bearingless permanent magnet tpe motor has the same stiffness in and direction. When the angular velocit of rotor is, the centrifugal force acting on the rotor can be epressed as equation (3). The feedforward compensation controller includes two parts. The rotor vibration is caused b the centrifugal force. And thus, the simulation sstem must consider the effect of the centrifugal force. The calculation module of centrifugal force F z and F z according to the equation (3) is shown as Fig. 5. CLOCK ρ cos sin m F z F z Fig. 5. Block diagram of centrifugal force calculation. The vibration signal etraction module is shown in Fig. 6. Its purpose is to realize the etraction of vibration signal from the displacement signal. The displacement signal of geomentric center X s and Y s detected b the radial displacement sensor transform to X r and Y r using the transformation from the rectangular coordinate to the snchronous rotating coordinate. X r = Xscost Yssint, (6) Yr = Xssint Yscost The vibration signal with the frequenc equals to the rotational frequenc is transformed to the DC signal. The other signals are transformed to high frequenc signals. Then, the X r and Y r pass through the low pass filter (LPF). The high frequenc signals are filtered. The output signals X r and Y r are onl consisting the DC signals. Finall, the inverse coordinate transformation has been done as follow. 55
6 Sensors & Transducers, Vol. 75, Issue 7, Jul 4, pp CLOCK sin cos X r LPF X r K i X c X s Y s Y r LPF Y r K i Y c Fig. 6. Block diagram of vibration signal etraction. X c = Xrcost Yrsin t, (7) Yc = Xrsint Yrcost From equation (7), the vibration signals X c and Y c etracted from the displacement signals are the compensation signals. The compensation signals have the same frequenc with the F z and F z. But the phase difference is equal to 8. The amplitudes of compensation signals can be adjusted. 5. Simulation Research In order to verif the validit of the above vibration control method, the feed-forward compensation control sstem is constructed based on the rotor magnetic field decoupling control sstem. The control sstem is shown in Fig. 5. The calculation of centrifugal force and etraction of vibration signals are following the rotational velocit. So the control sstem can realize the real-time compensation. The parameters of bearingless permanent magnet tpe motor are given as Table. The simulation sstem is constructed using Matlab/Simulink toolbo. The simulation process is from s to. s using Ode3t. Fig. 7. shows the currents waveform without feed-forward compensation control. The control currents in power amplifier are sine waveform. The amplitude is.5 A. After the compensation control is added to eliminate the rotor vibration, the amplitude of control current is. A shown in Fig. 8. Fig. 7. Power amplifier output current waves without feed-forward compensation control. Fig. 8. Power amplifier output current waves with feed-forward compensation control. The trajector of rotor geometric center is shown in Fig. 9. In (a), the eternal control force enforce the rotor rotating around the geometric center in the radial displacement closed loop sstem. The radial vibration amplitude of rotor is about to -4 mm. The trajector of rotor geometric center is shown in (b) with compensation control. The rotor rotates around the center of inertia because the vibration component in feedback signals is offset b the compensation signals. So the amplitude of radial displacement is equal to the eccentricit (. mm). But the control currents in power amplifier are decreased substantiall. 56
7 Sensors & Transducers, Vol. 75, Issue 7, Jul 4, pp is eliminated with the rotor rotating around inertia center. Acknowledgements This work was supported b The Natural Science Foundation of Jiangsu Province (BK46, BK348) and Colleges and niversities Natural Research Project of Jiangsu Province (3KJB47). References Fig. 9. The trajector of rotor geometric center. 6. Conclusions In this paper, introducing of the rotor motion equation of BPSMS and analsis on generation mechanism of unbalance force, feed-forward compensation controller is designed based on the technolog of adaptive notch filter. The control sstem is simulated with Matlab/Simulink toolbo. The simulation results have shown that the current oscillation can be minimizing b the feed-forward compensation controller, and vibrating force []. M. Ooshima, A. Chiba, T. Fukao, Characteristics of a permanent magnet tpe bearingless motor, IEEE Transactions on Industrial Application, Vol. 3, Issue, 996, pp []. M. Ooshima, A. Chiba, T. Fukao, Design and analsis of permanent magnet-tpe bearingless motors, IEEE Transactions on Industrial Application, Vol. 43, Issue, 996, pp [3]. A. Chiba, S. Onoa, T. Kikuchi, An analsis of a prototpe permanent magnet bearingless motor using finite element method, in Proceedings of the 5 th International Smposium on Magnetic Bearings, Kanazawa, Japan, 996, pp [4]. Raoul Herzog, nbalance compensation using generalized notch filters in the multivariable feedback of magnetic bearings, IEEE Transactions on Control Sstems Technolog, Vol. 4, Issue 5, 996, pp [5]. Zihe Liu, Kenzo Nonami, Adaptive non-stationar vibration control for magnetic bearing sstem from start-up to operational speed, in Proceedings of the Seventh International Smposium on Magnetic Bearings, ETH, Zurich,, pp [6]. Juan Shi, Ron Zmood and Li Jing Qin, The indirect adaptive feed-forward control in magnetic bearing sstems for minimizing selected vibration performance measures, in Proceedings of the 8 th International Smposium on Magnetic Bearings, Mito, Japan,, pp Copright, International Frequenc Sensor Association (IFSA) Publishing, S. L. All rights reserved. ( 57
Magnetic Field Equivalent Current Analysis-Based Radial Force Control for Bearingless Permanent Magnet Synchronous Motors
Energies 2015, 8, 4920-4942; doi:10.3390/en8064920 Article OPEN ACCESS energies ISSN 1996-1073 www.mdpi.com/journal/energies Magnetic Field Equivalent Current Analysis-Based Radial Force Control for Bearingless
More informationStudy on Radial Suspension Forces of Bearingless Permanent Magnet Slice Motor Based on Accurate Inductance Model
4 Study on Radial Suspension Forces of Bearingless Permanent Magnet Slice Motor Based on Accurate Inductance Model Huangqiu Zhu, Suming Zhu School of Electrical and Information Engineering, Jiangsu University,
More informationMagnetic Force Compensation Methods in Bearingless Induction Motor
Australian Journal of Basic and Applied Sciences, 5(7): 1077-1084, 2011 ISSN 1991-8178 Magnetic Force Compensation Methods in Bearingless Induction Motor Hamidreza Ghorbani, Siamak Masoudi and Vahid Hajiaghayi
More information1045. Vibration of flexible rotor systems with twodegree-of-freedom
1045. Vibration of flexible rotor systems with twodegree-of-freedom PID controller of active magnetic bearings Z. X. Zhong, C. S. Zhu Z. X. Zhong 1, C. S. Zhu 2 College of Electrical Engineering, Zhejiang
More informationSimulation Analysis of SPWM Variable Frequency Speed Based on Simulink
Sensors & Transducers 2014 by IFSA Publishing, S. L. http://www.sensorsportal.com Simulation Analysis of SPWM Variable Frequency Speed Based on Simulink Min-Yan DI Hebei Normal University, Shijiazhuang
More informationStudy on Analysis of Torque-Slip Characteristics of Axial Gap Induction Motor
T. Magn. Soc. Jpn. (Special Issues)., 2, 43-47 (28) Stud on Analsis of Torque-Slip Characteristics of Aial Gap Induction Motor R. Sakai, Y. Yoshida *, and K. Tajima Department of Cooperative Major
More informationRegulated Voltage Simulation of On-board DC Micro Grid Based on ADRC Technology
2017 2 nd International Conference on Artificial Intelligence and Engineering Applications (AIEA 2017) ISBN: 978-1-60595-485-1 Regulated Voltage Simulation of On-board DC Micro Grid Based on ADRC Technology
More informationDesign of A Closed Loop Speed Control For BLDC Motor
International Refereed Journal of Engineering and Science (IRJES) ISSN (Online) 2319-183X, (Print) 2319-1821 Volume 3, Issue 11 (November 214), PP.17-111 Design of A Closed Loop Speed Control For BLDC
More informationComparison of Different Control Concepts for Bearingless Brushless Motors
Comparison of Different Control Concepts for Bearingless Brushless Motors Franz Zürcher 1, a, Thomas Nussbaumer 2, Stefan Walter 1, Christoph Wegmüller 1 and Johann W. Kolar 1 1 ETH Zürich, Switzerland
More informationActive Vibration Isolation of an Unbalanced Machine Tool Spindle
Active Vibration Isolation of an Unbalanced Machine Tool Spindle David. J. Hopkins, Paul Geraghty Lawrence Livermore National Laboratory 7000 East Ave, MS/L-792, Livermore, CA. 94550 Abstract Proper configurations
More informationResearch of Radial Forces and Torque of Bearingless Synchronous Machine
Environment. Technology. Resources, Rezekne, Latvia Proceedings of the 10 th International Scientific and Practical Conference. Volume I, 128-132 Research of Radial Forces and Torque of Bearingless Synchronous
More informationJournal of World s Electrical Engineering and Technology J. World. Elect. Eng. Tech. 4(1): 07-12, April 25, 2015
ORIGINAL ARTICLE PII: S232251141500002-4 Received 07 Sep. 2014 Accepted 25 Oct. 2014 2015 Scienceline Publication www.science-line.com 2322-5114 Journal of World s Electrical Engineering and Technology
More informationENERGY SAVING ROBUST CONTROL OF ACTIVE MAGNETIC BEARINGS IN FLYWHEEL
Energ Saving Robust Control of Active Magnetic Bearings in Flwheel ENERGY SAVING ROBUST CONTROL OF ACTIVE MAGNETIC BEARINGS IN FLYWHEEL Arkadiusz MYSTKOWSKI * * Bialstok Universit of Technolog, Facult
More informationStep vs. Servo Selecting the Best
Step vs. Servo Selecting the Best Dan Jones Over the many years, there have been many technical papers and articles about which motor is the best. The short and sweet answer is let s talk about the application.
More informationDetection and Imaging of Internal Cracks by Tangential Magnetic Field Component Analysis using Low-Frequency Eddy Current Testing
19 th World Conference on Non-Destructive Testing 21 Detection and Imaging of Internal Cracks b Tangential Magnetic Field Component Analsis using Low-Frequenc Edd Current Testing Takua YASUGI, Yatsuse
More informationJ. Electrical Systems 9-1 (2013): Regular paper
Amrita Sinha 1*, D. N. Vishwakarma, J. Electrical Sstems 9-1 (013): 15-136 Regular paper Pattern Classification based Intelligent Numerical Protection of Salient-pole Snchronous Generator using Neural
More informationA Study on analysis of intracranial acoustic wave propagation by the finite difference time domain method
A Stud on analsis of intracranial acoustic wave propagation b the finite difference time domain method 4.5 Wa Biological effects of ultrasound, ultrasonic tomograph Yoko Tanikaga, Toshikazu Takizawa, Takefumi
More informationRobot Joint Angle Control Based on Self Resonance Cancellation Using Double Encoders
Robot Joint Angle Control Based on Self Resonance Cancellation Using Double Encoders Akiyuki Hasegawa, Hiroshi Fujimoto and Taro Takahashi 2 Abstract Research on the control using a load-side encoder for
More information3.1.Introduction. Synchronous Machines
3.1.Introduction Synchronous Machines A synchronous machine is an ac rotating machine whose speed under steady state condition is proportional to the frequency of the current in its armature. The magnetic
More informationA COMPARISON STUDY OF THE COMMUTATION METHODS FOR THE THREE-PHASE PERMANENT MAGNET BRUSHLESS DC MOTOR
A COMPARISON STUDY OF THE COMMUTATION METHODS FOR THE THREE-PHASE PERMANENT MAGNET BRUSHLESS DC MOTOR Shiyoung Lee, Ph.D. Pennsylvania State University Berks Campus Room 120 Luerssen Building, Tulpehocken
More informationModeling and Simulation of Field Oriented Control PMSM Drive System using SVPWM Technique
International Journal of Engineering Trends and Technology (IJETT) olume 9 Number 4- September 26 Modeling and Simulation of Field Oriented Control PMSM Drive System using SPWM Technique Pradeep Kumar,
More informationCONTROLLING THE OSCILLATIONS OF A SWINGING BELL BY USING THE DRIVING INDUCTION MOTOR AS A SENSOR
Proceedings, XVII IMEKO World Congress, June 7,, Dubrovnik, Croatia Proceedings, XVII IMEKO World Congress, June 7,, Dubrovnik, Croatia XVII IMEKO World Congress Metrology in the rd Millennium June 7,,
More informationUnbalance Detection in Flexible Rotor Using Bridge Configured Winding Based Induction Motor
Unbalance Detection in Flexible Rotor Using Bridge Configured Winding Based Induction Motor Natesan Sivaramakrishnan, Kumar Gaurav, Kalita Karuna, Rahman Mafidur Department of Mechanical Engineering, Indian
More informationUser Guide IRMCS3041 System Overview/Guide. Aengus Murray. Table of Contents. Introduction
User Guide 0607 IRMCS3041 System Overview/Guide By Aengus Murray Table of Contents Introduction... 1 IRMCF341 Application Circuit... 2 Sensorless Control Algorithm... 4 Velocity and Current Control...
More informationSelfsensing Unbalance Rejection and Reduction of the Gyroscopic Effect for an Active Magnetic Bearing System
Selfsensing Unbalance Rejection and Reduction of the Gyroscopic Effect for an Active Magnetic Bearing System Markus Hutterer, Matthias Hofer and Manfred Schrödl Vienna University of Technology Institute
More informationACTUATORS AND SENSORS. Joint actuating system. Servomotors. Sensors
ACTUATORS AND SENSORS Joint actuating system Servomotors Sensors JOINT ACTUATING SYSTEM Transmissions Joint motion low speeds high torques Spur gears change axis of rotation and/or translate application
More informationMATLAB/SIMULINK MODEL OF FIELD ORIENTED CONTROL OF PMSM DRIVE USING SPACE VECTORS
MATLAB/SIMULINK MODEL OF FIELD ORIENTED CONTROL OF PMSM DRIVE USING SPACE VECTORS Remitha K Madhu 1 and Anna Mathew 2 1 Department of EE Engineering, Rajagiri Institute of Science and Technology, Kochi,
More informationEstimation of Vibrations in Switched Reluctance Motor Drives
American Journal of Applied Sciences 2 (4): 79-795, 2005 ISS 546-9239 Science Publications, 2005 Estimation of Vibrations in Switched Reluctance Motor Drives S. Balamurugan and R. Arumugam Power System
More informationStudy on Repetitive PID Control of Linear Motor in Wafer Stage of Lithography
Available online at www.sciencedirect.com Procedia Engineering 9 (01) 3863 3867 01 International Workshop on Information and Electronics Engineering (IWIEE) Study on Repetitive PID Control of Linear Motor
More informationImpact of PWM Control Frequency onto Efficiency of a 1 kw Permanent Magnet Synchronous Motor
http://dx.doi.org/10.5755/j01.eie.22.6.17216 ELEKTRONIKA IR ELEKTROTECHNIKA, ISSN 1392-1215, VOL. 22, NO. 6, 2016 Impact of PWM Control Frequency onto Efficiency of a 1 kw Permanent Magnet Synchronous
More informationUser Guide Introduction. IRMCS3043 System Overview/Guide. International Rectifier s imotion Team. Table of Contents
User Guide 08092 IRMCS3043 System Overview/Guide By International Rectifier s imotion Team Table of Contents IRMCS3043 System Overview/Guide... 1 Introduction... 1 IRMCF343 Application Circuit... 2 Power
More informationAvailable online at ScienceDirect. Procedia Engineering 168 (2016 ) th Eurosensors Conference, EUROSENSORS 2016
Available online at www.sciencedirect.com ScienceDirect Procedia Engineering 168 (216 ) 1671 1675 3th Eurosensors Conference, EUROSENSORS 216 Embedded control of a PMSM servo drive without current measurements
More informationSynchronous Current Control of Three phase Induction motor by CEMF compensation
Synchronous Current Control of Three phase Induction motor by CEMF compensation 1 Kiran NAGULAPATI, 2 Dhanamjaya Appa Rao, 3 Anil Kumar VANAPALLI 1,2,3 Assistant Professor, ANITS, Sangivalasa, Visakhapatnam,
More informationMAGNETIC LEVITATION SUSPENSION CONTROL SYSTEM FOR REACTION WHEEL
IMPACT: International Journal of Research in Engineering & Technology (IMPACT: IJRET) ISSN 2321-8843 Vol. 1, Issue 4, Sep 2013, 1-6 Impact Journals MAGNETIC LEVITATION SUSPENSION CONTROL SYSTEM FOR REACTION
More informationNew Long Stroke Vibration Shaker Design using Linear Motor Technology
New Long Stroke Vibration Shaker Design using Linear Motor Technology The Modal Shop, Inc. A PCB Group Company Patrick Timmons Calibration Systems Engineer Mark Schiefer Senior Scientist Long Stroke Shaker
More informationA Comparative Study of Sinusoidal PWM and Space Vector PWM of a Vector Controlled BLDC Motor
A Comparative Study of Sinusoidal PWM and Space Vector PWM of a Vector Controlled BLDC Motor Lydia Anu Jose 1, K. B.Karthikeyan 2 PG Student, Dept. of EEE, Rajagiri School of Engineering and Technology,
More informationCURRENT FOLLOWER APPROACH BASED PI AND FUZZY LOGIC CONTROLLERS FOR BLDC MOTOR DRIVE SYSTEM FED FROM CUK CONVERTER
CURRENT FOLLOWER APPROACH BASED PI AND FUZZY LOGIC CONTROLLERS FOR BLDC MOTOR DRIVE SYSTEM FED FROM CUK CONVERTER N. Mohanraj and R. Sankaran Shanmugha Arts, Science, Technology and Research Academy University,
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 informationCHAPTER 2 D-Q AXES FLUX MEASUREMENT IN SYNCHRONOUS MACHINES
22 CHAPTER 2 D-Q AXES FLUX MEASUREMENT IN SYNCHRONOUS MACHINES 2.1 INTRODUCTION For the accurate analysis of synchronous machines using the two axis frame models, the d-axis and q-axis magnetic characteristics
More informationLab 11. Speed Control of a D.C. motor. Motor Characterization
Lab 11. Speed Control of a D.C. motor Motor Characterization Motor Speed Control Project 1. Generate PWM waveform 2. Amplify the waveform to drive the motor 3. Measure motor speed 4. Estimate motor parameters
More informationA Novel Control System Design for Vibrational MEMS Gyroscopes
Sensors & Transducers Journal, Vol.78, Issue 4, April 7, pp.73-8 Sensors & Transducers ISSN 76-5479 7 by IFSA http://www.sensorsportal.com A Novel Control System Design for Vibrational MEMS Gyroscopes
More informationControlling of Permanent Magnet Brushless DC Motor using Instrumentation Technique
Scientific Journal of Impact Factor(SJIF): 3.134 International Journal of Advance Engineering and Research Development Volume 2,Issue 1, January -2015 e-issn(o): 2348-4470 p-issn(p): 2348-6406 Controlling
More informationSpeed control of Permanent Magnet Synchronous Motor using Power Reaching Law based Sliding Mode Controller
Speed control of Permanent Magnet Synchronous Motor using Power Reaching Law based Sliding Mode Controller NAVANEETHAN S 1, JOVITHA JEROME 2 1 Assistant Professor, 2 Professor & Head Department of Instrumentation
More informationAnalysis of Half-coiled Short-pitch Windings with Different Phase Belt for Multiphase Bearingless Motor
J Electr Eng Technol Vol. 8, No.?: 742-?, 2013 http://dx.doi.org/10.5370/jeet.2013.8.?.742 ISSN(Print) 1975-0102 ISSN(Online) 2093-7423 Analysis of Half-coiled Short-pitch Windings with Different Phase
More informationParallel Operation of Distributed Generators by Virtual Synchronous Generator Control in Microgrids
Niagara 2016 Symposium on Microgrids October 2021, 2016 Niagara, Canada Parallel Operation of Distributed Generators by Virtual Synchronous Generator Control in Microgrids Jia Liu* and Toshifumi Ise Osaka
More informationAnalysis of Losses in High Speed Slotless PM Synchronous Motor Integrated the Added Leakage Inductance
International Conference on Power Electronics and Energy Engineering (PEEE 2015) Analysis of Losses in High Speed Slotless PM Synchronous Motor Integrated the Added Leakage Inductance B.Q. Kou, H.C. Cao
More informationA Model Based Digital PI Current Loop Control Design for AMB Actuator Coils Lei Zhu 1, a and Larry Hawkins 2, b
A Model Based Digital PI Current Loop Control Design for AMB Actuator Coils Lei Zhu 1, a and Larry Hawkins 2, b 1, 2 Calnetix, Inc 23695 Via Del Rio Yorba Linda, CA 92782, USA a lzhu@calnetix.com, b lhawkins@calnetix.com
More informationInfluence Caused by Harmonic and Filtering Methods of Synchronous Generator in Short-capacity System
Energy and Power Engineering, 2013, 5, 1083-1088 doi:10.4236/epe.2013.54b206 Published Online July 2013 (http://www.scirp.org/journal/epe) nfluence Caused by Harmonic and Filtering Methods of Synchronous
More informationAdvanced Servo Tuning
Advanced Servo Tuning Dr. Rohan Munasinghe Department of Electronic and Telecommunication Engineering University of Moratuwa Servo System Elements position encoder Motion controller (software) Desired
More informationA Robust Fuzzy Speed Control Applied to a Three-Phase Inverter Feeding a Three-Phase Induction Motor.
A Robust Fuzzy Speed Control Applied to a Three-Phase Inverter Feeding a Three-Phase Induction Motor. A.T. Leão (MSc) E.P. Teixeira (Dr) J.R. Camacho (PhD) H.R de Azevedo (Dr) Universidade Federal de Uberlândia
More informationThe Research on Servo Control System for AC PMSM Based on DSP BaiLei1, a, Wengang Zheng2, b
4th International Conference on Mechatronics, Materials, Chemistry and Computer Engineering (ICMMCCE 015) The Research on Servo Control System for AC PMSM Based on DSP BaiLei1, a, Wengang Zheng, b 1 Engineering
More informationSmooth rotation. An adaptive algorithm kills jerky motions in motors.
Page 1 of 4 Copyright 2004 Penton Media, Inc., All rights reserved. Printing of this document is for personal use only. For reprints of this or other articles, click here Smooth rotation An adaptive algorithm
More informationJournal of the Magnetics Societ of Japan J-STAGE Advanced Publication Date:6..6 capacitance connected in series with the feeding coil is given as foll
Journal of the Magnetics Societ of Japan J-STAGE Advanced Publication Date:6..6 Reduction of Magnetic Field from Receiving Side b Separated in Contactless Charging Sstems for Moving Electric Vehicle S.
More informationStepper Motors WE CREATE MOTION
WE CREATE MOTIO PRECIstep Technology EW Page FDM 6 Two Phase with Disc Magnet, AM 8 Two Phase,6 AM Two Phase,6 ADM S Two Phase with Disc Magnet, 6 7 AM Two Phase 6 8 AM Two Phase AM -R Two Phase WE CREATE
More informationCHAPTER 2 STATE SPACE MODEL OF BLDC MOTOR
29 CHAPTER 2 STATE SPACE MODEL OF BLDC MOTOR 2.1 INTRODUCTION Modelling and simulation have been an essential part of control system. The importance of modelling and simulation is increasing with the combination
More informationActuators. EECS461, Lecture 5, updated September 16,
Actuators The other side of the coin from sensors... Enable a microprocessor to modify the analog world. Examples: - speakers that transform an electrical signal into acoustic energy (sound) - remote control
More informationThe Design of Switched Reluctance Motor Torque Optimization Controller
, pp.27-36 http://dx.doi.org/10.14257/ijca.2015.8.5.03 The Design of Switched Reluctance Motor Torque Optimization Controller Xudong Gao 1, 2, Xudong Wang 1, Zhongyu Li 1, Yongqin Zhou 1 1. Harbin University
More informationTHE integrated circuit (IC) industry, both domestic and foreign,
IEEE TRANSACTIONS ON MAGNETICS, VOL. 41, NO. 3, MARCH 2005 1149 Application of Voice Coil Motors in Active Dynamic Vibration Absorbers Yi-De Chen, Chyun-Chau Fuh, and Pi-Cheng Tung Abstract A dynamic vibration
More informationAC Machinery. Revised October 6, Fundamentals of AC Machinery 1
Fundamentals of AC Machinery Revised October 6, 2008 4. Fundamentals of AC Machinery 1 AC Machines: We begin this study by first looking at some commonalities that eist for all machines, then look at specific
More informationPART 2 - ACTUATORS. 6.0 Stepper Motors. 6.1 Principle of Operation
6.1 Principle of Operation PART 2 - ACTUATORS 6.0 The actuator is the device that mechanically drives a dynamic system - Stepper motors are a popular type of actuators - Unlike continuous-drive actuators,
More informationLatest Control Technology in Inverters and Servo Systems
Latest Control Technology in Inverters and Servo Systems Takao Yanase Hidetoshi Umida Takashi Aihara. Introduction Inverters and servo systems have achieved small size and high performance through the
More informationROTOR LEVITATION AND VIBRATION CONTROL OF HYBRID POLE BSRM USING FUZZY SLIDING MODE CONTROLLER
International Journal of Innovative Computing, Information and Control ICIC International c 2018 ISSN 1349-4198 Volume 14, Number 2, April 2018 pp. 671 681 ROTOR LEVITATION AND VIBRATION CONTROL OF HYBRID
More informationNumerical Method for Antenna Radiation Problem by FDTD Method with PML
Numerical Method for Antenna Radiation Problem b FDTD Method with PML Takashi Kako and Yoshiharu Ohi The Universit of Electro-Communications, Department of Computer Science, Chofu, Toko 8-8585, Japan,
More informationMonitoring The Machine Elements In Lathe Using Vibration Signals
Monitoring The Machine Elements In Lathe Using Vibration Signals Jagadish. M. S. and H. V. Ravindra Dept. of Mech. Engg. P.E.S.C.E. Mandya 571 401. ABSTRACT: In any manufacturing industry, machine tools
More informationT40FH. Torque flange. Special features. Data sheet
T40FH Torque flange Special features - Nominal (rated) torques: 100kNm, 125kNm, 150kNm, 200kNm, 250kNm, 300kNm - Nominal (rated) rotational speed of 2000 rpm up to 3000 rpm - Compact design - Version for
More informationGeneralized Theory Of Electrical Machines
Essentials of Rotating Electrical Machines Generalized Theory Of Electrical Machines All electrical machines are variations on a common set of fundamental principles, which apply alike to dc and ac types,
More informationReduction of Magnetic Field from Receiving Side by Separated Coil in Contactless Charging Systems for Moving Electric Vehicle
J. Magn. Soc. Jpn., 4, 39-44 (16) Reduction of Magnetic Field from Receiving Side b Separated in Contactless Charging Sstems for Moving Electric Vehicle S. Aoki, F. Sato *,**, S. Miahara *, H.
More informationApplication Research on BP Neural Network PID Control of the Belt Conveyor
Application Research on BP Neural Network PID Control of the Belt Conveyor Pingyuan Xi 1, Yandong Song 2 1 School of Mechanical Engineering Huaihai Institute of Technology Lianyungang 222005, China 2 School
More informationIntelligent Control in Current Digital Switching Power Amplifier for Active Magnetic Bearing
Intelligent Control in Current Digital Switching Power Amplifier for Active Magnetic Bearing Jun Wang, Mingzhe Zou, Maocheng Zhao and Cong Huang School of Information Science and echnology, Nanjing Forestry
More informationModeling Position Tracking System with Stepper Motor
Modeling Position Tracking System with Stepper Motor Shreeji S. Sheth 1, Pankaj Kr. Gupta 2, J. K. Hota 3 Abstract The position tracking system is used in many applications like pointing an antenna towards
More informationA Searching Analyses for Best PID Tuning Method for CNC Servo Drive
International Journal of Science and Engineering Investigations vol. 7, issue 76, May 2018 ISSN: 2251-8843 A Searching Analyses for Best PID Tuning Method for CNC Servo Drive Ferit Idrizi FMI-UP Prishtine,
More informationThe Occurrence of Faults in Permanent Magnet Synchronous Motor Drives and its Effects on the Power Supply Quality
The Occurrence of Faults in Permanent Magnet Synchronous Motor Drives and its Effects on the Power Supply Quality J. O. Estima A. J. Marques Cardoso University of Coimbra, FCTUC/IT Department of Electrical
More informationFeasibility of Steered Shaped Beam Dielectric Lens Antenna for Mobile Communications at mm-waves
Feasibilit of Steered Shaped Beam Dielectric Lens Antenna for Mobile Communications at mm-waves João Eira, Pedro António, Carlos A. Fernandes Instituto de Telecomunicações, IST, Av. Rovisco Pais 149-1
More informationThe Principle and Simulation of Moving-coil Velocity Detector. Yong-hui ZHAO, Li-ming WANG and Xiao-ling YAN
17 nd International Conference on Electrical and Electronics: Techniques and Applications (EETA 17) ISBN: 978-1-6595-416-5 The Principle and Simulation of Moving-coil Velocity Detector Yong-hui ZHAO, Li-ming
More informationSensorless Control of a Novel IPMSM Based on High-Frequency Injection
Sensorless Control of a Novel IPMSM Based on High-Frequency Injection Xiaocan Wang*,Wei Xie**, Ralph Kennel*, Dieter Gerling** Institute for Electrical Drive Systems and Power Electronics,Technical University
More informationDesigning An Efficient Three Phase Brushless Dc Motor Fuzzy Control Systems (BLDCM)
Designing An Efficient Three Phase Brushless Dc Motor Fuzzy Control Systems (BLDCM) Rafid Ali Ridha Ibrahim Department of Physics University of Kirkuk /College of Science Kirkuk, Iraq ibrahim_aslanuz@yahoo.com
More informationELECTRIC MACHINES MODELING, CONDITION MONITORING, SEUNGDEOG CHOI HOMAYOUN MESHGIN-KELK AND FAULT DIAGNOSIS HAMID A. TOLIYAT SUBHASIS NANDI
ELECTRIC MACHINES MODELING, CONDITION MONITORING, AND FAULT DIAGNOSIS HAMID A. TOLIYAT SUBHASIS NANDI SEUNGDEOG CHOI HOMAYOUN MESHGIN-KELK CRC Press is an imprint of the Taylor & Francis Croup, an informa
More informationPublished in A R DIGITECH
www.ardigitech.in ISSN 232-883X,VOLUME 3 ISSUE 2,1/4/215 STUDY THE PERFORMANCE CHARACTERISTIC OF INDUCTION MOTOR Niranjan.S.Hugar*1, Basa vajyoti*2 *1 (lecturer of Electrical Engineering, Dattakala group
More informationEngineering Reference
Engineering Reference Linear & Rotary Positioning Stages Table of Contents 1. Linear Positioning Stages...269 1.1 Precision Linear Angular Dynamic 1.2 Loading Accuracy Repeatability Resolution Straightness
More informationPerformance evaluation of fractional-slot tubular permanent magnet machines with low space harmonics
ARCHIVES OF ELECTRICAL ENGINEERING DOI 10.1515/aee-2015-0049 VOL. 64(4), pp. 655-668 (2015) Performance evaluation of fractional-slot tubular permanent magnet machines with low space harmonics Jiabin Wang
More informationAn Artificial Neural Network Controller of a Permanent Magnet Brushless Motor for Electric Tractors
An Artificial Neural Network Controller of a Permanent Magnet Brushless Motor for Electric Tractors Liyou XU 1,2, Shaomin ZHU 1, Zhifei XUE 2 and Jinzhong SHI 2 1 School of Vehicle and Traffic Engineering,
More informationIJSRD - International Journal for Scientific Research & Development Vol. 2, Issue 06, 2014 ISSN (online):
IJSRD - International Journal for Scientific Research & Development Vol. 2, Issue 06, 2014 ISSN (online): 2321-0613 Modeling and Simulation of SRF Control Based Shunt Active Power Filter and Application
More informationEvaluation of a New Dual-Rotor Hybrid Excitation Brushless Motor
Progress In Electromagnetics Research C, Vol. 86, 233 245, 2018 Evaluation of a New Dual-Rotor Hybrid Excitation Brushless Motor Libing Jing *, Jia Cheng, Qixing Gao, Ting Zhang, and Ying Lin Abstract
More informationL E C T U R E R, E L E C T R I C A L A N D M I C R O E L E C T R O N I C E N G I N E E R I N G
P R O F. S L A C K L E C T U R E R, E L E C T R I C A L A N D M I C R O E L E C T R O N I C E N G I N E E R I N G G B S E E E @ R I T. E D U B L D I N G 9, O F F I C E 0 9-3 1 8 9 ( 5 8 5 ) 4 7 5-5 1 0
More informationUNIT-III STATOR SIDE CONTROLLED INDUCTION MOTOR DRIVE
UNIT-III STATOR SIDE CONTROLLED INDUCTION MOTOR DRIVE 3.1 STATOR VOLTAGE CONTROL The induction motor 'speed can be controlled by varying the stator voltage. This method of speed control is known as stator
More informationCHAPTER 2 CURRENT SOURCE INVERTER FOR IM CONTROL
9 CHAPTER 2 CURRENT SOURCE INVERTER FOR IM CONTROL 2.1 INTRODUCTION AC drives are mainly classified into direct and indirect converter drives. In direct converters (cycloconverters), the AC power is fed
More informationExample Data for Electric Drives Experiment 6. Analysis and Control of a Permanent Magnet AC (PMAC) Motor
Example Data for Electric Drives Experiment 6 Analysis and Control of a Permanent Magnet AC (PMAC) Motor The intent of this document is to provide example data for instructors and TAs, to help them prepare
More informationExperiment VI: The LRC Circuit and Resonance
Experiment VI: The ircuit and esonance I. eferences Halliday, esnick and Krane, Physics, Vol., 4th Ed., hapters 38,39 Purcell, Electricity and Magnetism, hapter 7,8 II. Equipment Digital Oscilloscope Digital
More informationGlossary. Glossary Engineering Reference. 35
Glossary Engineering Reference Glossary Abbe error The positioning error resulting from angular motion and an offset between the measuring device and the point of interest. Abbe offset The value of the
More informationPOSITION AND SPEED ESTIMATION OF A STEPPING MOTOR AS AN ACTUATOR OF DIESEL ENGINE FUEL RACK
Ivana Golub Medvešek Ante Cibilić Vinko Tomas ISSN 0007-215X eissn 1845-5859 POSITION AND SPEED ESTIMATION OF A STEPPING MOTOR AS AN ACTUATOR OF DIESEL ENGINE FUEL RACK Summary UDC 629.5.062.3 Professional
More informationON THE PERFORMANCE OF LINEAR AND ROTARY SERVO MOTORS IN SUB MICROMETRIC ACCURACY POSITIONING SYSTEMS
ON THE PERFORMANCE OF LINEAR AND ROTARY SERVO MOTORS IN SUB MICROMETRIC ACCURACY POSITIONING SYSTEMS Gilva Altair Rossi de Jesus, gilva@demec.ufmg.br Department of Mechanical Engineering, Federal University
More informationAN INTEGRATED MICROELECTROMECHANICAL RESONANT OUTPUT GYROSCOPE
In Proceedings, 15th IEEE Micro Electro Mechanical Sstems Conference, Las Vegas, NV, Jan. 0-4 00. AN INTEGRATED MICROELECTROMECHANICAL RESONANT OUTPUT GYROSCOPE Ashwin A. Seshia *, Roger T. Howe * and
More informationD102. Damped Mechanical Oscillator
D10. Damped Mechanical Oscillator Aim: design and writing an application for investigation of a damped mechanical oscillator Measurements of free oscillations of a damped oscillator Measurements of forced
More informationModeling of Electro Mechanical Actuator with Inner Loop controller
Modeling of Electro Mechanical Actuator with Inner Loop controller Patchigalla Vinay 1, P Mallikarjuna Rao 2 1PG scholar, Dept.of EEE, Andhra Universit(A),Visakhapatnam,India 2Professor, Dept.of EEE, Andhra
More informationUpgrading from Stepper to Servo
Upgrading from Stepper to Servo Switching to Servos Provides Benefits, Here s How to Reduce the Cost and Challenges Byline: Scott Carlberg, Motion Product Marketing Manager, Yaskawa America, Inc. The customers
More informationApplication of Matrix Converter in Wind Energy Conventional System Employing PMSG
IOSR Journal of Electrical and Electronics Engineering (IOSRJEEE) ISSN : 2278-1676 Volume 1, Issue 2 (May-June 2012), PP 22-29 Application of Matrix Converter in Wind Energy Conventional System Employing
More information3. What is hysteresis loss? Also mention a method to minimize the loss. (N-11, N-12)
DHANALAKSHMI COLLEGE OF ENGINEERING, CHENNAI DEPARTMENT OF ELECTRICAL AND ELECTRONICS ENGINEERING EE 6401 ELECTRICAL MACHINES I UNIT I : MAGNETIC CIRCUITS AND MAGNETIC MATERIALS Part A (2 Marks) 1. List
More informationMagnetic Bearing Literature Review. Team 2: The Floaters. Ivett Ortega, Wole Oyelola, Claudia Vargas
Magnetic Bearing Literature Review Team 2: The Floaters Ivett Ortega, Wole Oyelola, Claudia Vargas Our project is to create a semi-frictionless bearing that is controlled by a feedback control system.
More informationElements of Haptic Interfaces
Elements of Haptic Interfaces Katherine J. Kuchenbecker Department of Mechanical Engineering and Applied Mechanics University of Pennsylvania kuchenbe@seas.upenn.edu Course Notes for MEAM 625, University
More informationAnalysis on exciting winding electromagnetic force of Turbogenerator under rotor interturn short circuit fault
International Conference on Advanced Electronic Science and Technology (AEST 2016) Analysis on exciting winding electromagnetic force of Turbogenerator under rotor interturn short circuit fault a Hao Zhong,
More information