Two Mode Deep Changes for Strong Power Conversion in Heating System

Transcription

1 ISSN (Print) : lectronics and Instruentation nineerin (An ISO 397: 7 ertified Oranization) Vol. 4, Issue, February 5 Two Mode Deep hanes for Stron Power onversion in Heatin Syste N.VijayaSarathi,.Mohanapriya Assistant Professor, Dept. of, Saranathan ollee of nineerin, Trichy, Tailnadu, India, PG Student [PD], Dept. of, Saranathan ollee of nineerin, Trichy, Tailnadu, India 3 ABSTRAT: Two ode stron chanes use the half bride inverter in two operatin odes to achieve efficiency in a wide power levels. By coparin with dual ode resonant converter the class D full bride resonant inverter operates only in sinle ode where low rane of power levels are not possible. The dual ode stron chane can operate with Zero Voltae Switchin and Zero urrent Switchin so the switchin losses are iniised. Induction heatin is the fast rowin technoloy in doestic appliances it has hih efficiency and faster heatin ties. In this paper dual ode deep chane function has been used for heatin syste applications. KYWORDS: Induction heatin (IH), Half bride inverter, resonant converter. I.INTRODUTION The ain advantae of doestic induction heatin is cleanliness, rapid heatin, hih power densities, accurate tie and teperature control. IH is a non contact process. It uses hih frequency electricity to heat aterials that are electrically conductive. When the pot is directly heated by the induced currents enerated within a varyin anetic field in the rane of KHZ.The anetic field is enerated by a inductor coil syste, supplied by a resonant converter. In Resonant converter hiher output occurs at resonant frequency, yieldin efficiency also hih. The conventional series half bride ZVS resonant inverter is usin IH application. In this converter the resonance frequency is hiher than the switchin frequency, yieldin to the axiu efficiency at axiu output. Whereas if the switchin frequency is hiher than the resonant frequency. Thus with the increased switchin frequency the losses are increased for lower power output rane [] [3].To overcoe this liitation dual ode resonant converter is used. The ain advantae of resonant converter is to iprove the efficiency even at low output power rane by reducin switchin losses. lassd halfbride converter is used in the hih output power rane, whereas classd halfbride converter [3], [4] is used in the low to ediu output power rane. The cobination of these operation odes achieves hih efficiency levels in a wider rane of output power levels. II.HALF BRIDG RSONANT ONVRTR The conventional ethod used half bride series resonant converter. It is one switch topoloy ethod for ediuhih output power levels due to its hih efficiency and low voltae stress across the switchin devices. In Half bride resonant converter consist of passive resistance and inductance. The series resonant half bride applied to induction heatin operates at switchin frequency hiher than the resonant frequency to achieve soft switchin conditions. To reduce switchin losses a snubber capacitor is added. In class D operation ode iplies the snubber capacitor s is uch lower than the resonant capacitor r.in classd operation ode is achieved at ZVS and Zero Voltae derivative Switchin (ZVDS) at the turn off. The chane of ode fro class D to class D occurs by chanin the capacitor values. opyriht to IJARI.566/ijareeie.5.475

2 ISSN (Print) : lectronics and Instruentation nineerin (An ISO 397: 7 ertified Oranization) Vol. 4, Issue, February 5 III.TWO MOD DP HANGR Fi.. Two ode stron converter The dual ode resonant converter can be used in order to iprove efficiency in whole operatin rane. In dual ode resonant converter electroechanical switches SPST and SPST allow varyin the snubber and resonant capacitance in order to chane the operation ode. They are six operation odes for the converter. MOD I: Fi.. Hih side transistor are turned on In ode I when hih side transistor is turned on low side transistor are turned off the load current is positive and it flows to the load. MOD II: Fi.3.Transistors are off state When hihside transistor is turned off. The switchoff current is used to chare/dischare the snubber capacitors. The hihside snubber capacitor is chared to the supply voltae. The low side snubber capacitor is dischared there is no power flows to the load. opyriht to IJARI.566/ijareeie.5.475

3 ISSN (Print) : lectronics and Instruentation nineerin (An ISO 397: 7 ertified Oranization) Vol. 4, Issue, February 5 MOD III: Fi. 4. Low side diode turns on Both the side hih and low side transistor are turned off.the load current is positive. It is supplied by the lowside diode. The power flows to the load. MOD IV: Fi.5. Low side transistor are turn on When low side transistor are turned on.the load current becoes neative no power flows to the load. MOD V: Fi.6.Both capacitors are dischared condition The lowside transistor is deactivated. The load current chares the lowside snubber capacitor to the supply voltae. The hihside snubber capacitor is dischared. MOD VI: Fi.7. Diode are on opyriht to IJARI.566/ijareeie

4 ISSN (Print) : lectronics and Instruentation nineerin (An ISO 397: 7 ertified Oranization) Vol. 4, Issue, February 5 When both snubber capacitors are chared/dischared. The neative load current flows throuh the hihside diode. IV. SIMULATION The siulation is done in a step by step anner in MATLABSiulink Ra.The siulation of entire Series Resonant onverter syste with diode bride rectifier, inductor, capacitor. SIMULATION IRUIT IN D MOD: ontinuous Scope powe rui s D D Fro D D I s To Workspace r r b I i Scope6 INDUTOR POT s3 v v r r3 V To Workspace D Mode sina rs l Product Scope Sine Wave v3 Switch D Mode Goto Scope sina rs l v vs v4 Step c v v PI sina rs l v vs Sine Wave Fi 8 Siulation in D ode The results for the siulation of class D under varyin Power, voltae and current are shown below 5 5 Voltae (volts) Tie (Seconds) Fi.9. Output Voltae wavefor 5 5 urrent (Aps) Tie (Seconds) Fi..Output urrent wavefor opyriht to IJARI.566/ijareeie

5 ISSN (Print) : lectronics and Instruentation nineerin (An ISO 397: 7 ertified Oranization) Vol. 4, Issue, February 5 SIMULATION IRUIT IN D MOD: Fi..Output Power wavefor o ntinuous Scope powe rui I To Workspace3 Scope6 INDUTOR POT s 3 5 Power (Watts) Tie (Seconds) D D Fro D D s r r b I i 5 s3 v v r r3 V T To Workspace To Workspace D Mode sina rs l Sine Wave Product v3 Scope Switch D Mode Goto Scope sinal r s v vs v4 Step c v v PI sinal r s 6.88 v vs Sine Wave Fi Siulation circuit in D ode Fi..Siulation circuit in D ode The results for the siulation of class D under varyin Power, voltae and current are shown below Output wavefors in D ode 5 Voltae (volts) Fi.3.Output voltae wavefor opyriht to IJARI.566/ijareeie

6 ISSN (Print) : lectronics and Instruentation nineerin (An ISO 397: 7 ertified Oranization) Vol. 4, Issue, February 5 3 urrent (Aps) Fi.4. Output urrent wavefor 3 5 Power (Watts) Fi.5. Output Power wavefor In Fi and 5we et the Output Power, Voltae, urrent.oparison between D and D ode are listed below. Table I: oparison in D and D ode losed loop lass D ode lass D ode Input voltae 3V 3V Output voltae 5V V Output current 5 A 3A Output power 5W 8W V.ONLUSION lassd half bride converter is used in the hih output power rane, whereas classd halfbride converter is used in the low to ediu output power rane. The cobination of these operation odes achieves hih efficiency levels in a wider rane of output power levels. In the dualode resonant converter, class D and class D operation odes are cobined to optiize the efficiency in wide rane of output power levels. Thus, the presented dualode resonant converter topoloy is a costeffective ipleentation for doestic induction heatin appliances. RFRNS [] Ahed, N. A. (). Hihfrequency softswitchin ac conversion circuit with dualode PWM/PDM control stratey for hihpower IH applications. Industrial lectronics, I Transactions on, 58(4), [] Burdio, J. M., Monterde, F., Garcia, J. R., Barraan, L. A., & Martinez, A. (5). A twooutput seriesresonant inverter for inductionheatin cookin appliances. Power lectronics, I Transactions on, (4), 858. opyriht to IJARI.566/ijareeie

7 ISSN (Print) : lectronics and Instruentation nineerin (An ISO 397: 7 ertified Oranization) Vol. 4, Issue, February 5 [3] Dieckerhoff, S., Ruan, M. J., & De Doncker, R. W. (999). Desin of an IGBTbased LLresonant inverter for hihfrequency induction heatin. In Industry Applications onference, 999. ThirtyFourth IAS Annual Meetin. onference Record of the 999 I (Vol. 3, pp. 3945). I. [4] steve, V., SanchisKilders,., Jordan, J., Dede,. J., ases,., Maset,., & Ferreres, A. (). Iprovin the efficiency of IGBT seriesresonant inverters usin pulse density odulation. Industrial lectronics, I Transactions on, 58(3), [5] Fujita, H., Uchida, N., & Ozaki, K. (). A new zonecontrol induction heatin syste usin ultiple inverter units applicable under utual anetic couplin conditions. Power lectronics, I Transactions on, 6(7), 97. [6] Jun, Y.. (999). Dual half bride series resonant inverter for induction heatin appliance with two loads. lectronics letters, 35(6), [7] Kwon, Y. S., Yoo, S. B., & Hyun, D. S. (999, March). Halfbride series resonant inverter for induction heatin applications with loadadaptive PFM control stratey. In Applied Power lectronics onference and xposition, 999. AP'99. Fourteenth Annual (Vol., pp ). I. [8] Llorente, S., Monterde, F., Burdio, J. M., & Acero, J. (, March). A coparative study of resonant inverter topoloies used in induction cookers. InAP. Seventeenth Annual I Applied Power lectronics onference and xposition (Vol., pp. 6874). [9] Lucia, O., Burdio, J. M., Barraan, L. A., Acero, J., & Millán, I. (). Seriesresonant ultiinverter for ultiple induction heaters. Power lectronics, I Transactions on, 5(), [] Millan, I., Puyal, D., Burdio, J. M., Beal,., & Acero, J. (7, February). Iproved perforance of halfbride series resonant inverter for induction heatin with discontinuous ode control. In Applied Power lectronics onference, AP 7Twenty Second Annual I (pp. 9398). I. [] Millan, I., Puyal, D., Burdio, J. M., Beal,., & Acero, J. (7, February). Iproved perforance of halfbride series resonant inverter for induction heatin with discontinuous ode control. In Applied Power lectronics onference, AP 7Twenty Second Annual I (pp. 9398). I. [] NuyenQuan, N., Stone, D. A., Binha,. M., & Foster, M. P. (6, May). Sinle phase atrix converter for radio frequency induction heatin. In Power lectronics, lectrical Drives, Autoation and Motion, 6. SPDAM 6. International Syposiu on (pp. 6468). I. [3] Saha, B., Kwon, S. K., Ahed, N. A., Oori, H., & Nakaoka, M. (8). oercial frequency A to hih frequency A converter with boostactive clap bride sinle stae ZVSPWM inverter. Power lectronics, I Transactions on, 3(), 449. BIOGRAPHY MOHANAPRIYA. Received B. deree in lectrical and lectronics nineerin fro Sudharsan nineerin ollee. She is pursuin 4 th seester, M. in Power lectronics and Drives at Saranathan ollee of nineerin. Her ajor research interest are in the field of Power lectronics Modellin and Siulation. opyriht to IJARI.566/ijareeie