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针对移相全桥变换器滞后臂零电压开关(ZVS)实现困难的问题,设计了一种辅助电路,可使滞后臂在全负载范围内实现ZVS。首先分析了ZVS的工作原理、滞后臂ZVS实现困难的原因及辅助电路的工作原理,然后对未加辅助电路的主电路及加辅助电路的主电路进行了仿真分析,通过仿真波形验证了理论的正确性。最后在一台4 kW/220V样机上,通过测量其相应波形,进行了验证。实验结果表明,仿真与样机实验结果一致,滞后臂在全负载范围内实现了ZVS。
Abstract：In order to realize zero-voltage switching(ZVS) in any load of the lagging arm,a kind of auxiliary circuit is designed,which aiming at the difficulty in realizing ZVS of phase-shifted full-bridge converter.Firstly,the working principle of ZVS is analyzed,the reasons of the difficulties in realizing ZVS of lagging arm and the working principle of the auxiliary circuit.Secondly,main circuit without auxiliary circuit and main circuit with auxiliary circuit are analyzed in simulation software.Correctness of the theory is validated by the simulation waveform.Finally,by measuring its corresponding waveform in a 4 kW/220 V prototype,the theory is verified.The results show that the results of simulation are consistent with prototype experiment,and the lagging arm can realize ZVS in any load within the scope.
[1]屈克庆,陈国呈,许春雨,等.一种辅助谐振变换极三相电压型PWM变流器[J].电工技术学报,2005,20(2):69-75.
[2]张占松,蔡宣三.开关电源的原理与设计[M].北京:电子工业出版社.2006.
[3]陈延明,王娟,武江峰,等.一种改进的零电压零电流倍流整流变换器[J].电工技术学报,2009,24(12):82-87.
[4]Mcgrath B P,Holmes D G,Mcgoldrick P J,et al.Design of a Soft-switched 6 kW Battery Charger for Traction Applications[J]JEEE Trans,on Power Electronics,2007,22(4):1136-1144.
[5]Sabate J A.Vlatkovic V.RicQey R B,et al.Design Considerations for High-voltage High-power Full-bridge Zero-voltage-switching PWM Converter[A].IEEE Applied Power Electronics Conference[C].1990:790-798.
[6]Hua G,Lee F C,Jovanovic M M.An Improved Full-bridge Zero-voltage-swicthed PWM Converter Using a Saturable Inductor[J].IEEE Trans.on Power Electronics,1993,8(4):530-534.
[7]胡育文,丁志刚.变压器副边钳位DC/DC ZVS全桥变换器[J].中国电机工程学报,2003,23(12):153-159.
[8]Yin L.Chen Q.Peng B,et al.Key Issues of Clamping Diodes in DCM Phase-shift full-bridge Converter[A].Proceedings of IEEE Power Electronics Specialists Conference[C].2007:1721-1725.
[9]Chen W.Ruan X.A Novel Zero-voltage-switching PWM Full Bridge Converter[J].IEEE Trans.on Power Electronics,2008,23(2):793-801.
[10]陈乾宏,殷兰兰,王健,等.二极管加电流互感器钳位的移相全桥DC/DC变换器[J].中国电机工程学报,2008,28(15):23-31.
[11]张沛然,李敏远.一种加辅助网络的移相全桥ZVS PWM变换器[J].电力电子技术,2013,47(2):67-69.
[12]陈仲,季飚,石磊.基于π型无源辅助网络的新型ZVS全桥变换器[J].中国电机工程学报,2010,30(21):20-25.
基本信息:
中图分类号:TM46
引用信息:
[1]崔世明,曾敏,徐超鹏.移相ZVS PWM变换器的研究[J].电力电子技术,2015,49(04):30-32+73.