改进型箝位谐振直流环节逆变器的实现机理分析
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摘要
为使箝位二极管承受的电压值不超过直流母线电压,提出了一种改进型箝位谐振直流环节逆变器,逆变器的辅助谐振电路中只有一个辅助开关器件,箝位电路中无需设置箝位开关,而且逆变器的直流母线电压被箝位在输入直流电压的1.1~1.3倍,有效地降低了电压应力。根据各工作阶段下的等效电路,分析了电路的工作过程,软开关实现条件和实验参数的设计,实验结果表明主开关器件在轻载和满载时都可以实现零电压软切换,辅助开关可以实现零电流软切换。因此,该拓扑结构能够有效地降低开关损耗。
A novel clamped resonant DC-link inverter was proposed to make the voltage across the clamped diode be no more than the voltage of DC-bus. There was only one auxiliary switch in auxiliary resonant circuit,and it was unnecessary to set clamped switch. Besides,the DC-link voltage can be clamped at 1. 1 ~ 1. 3 times of input DC-voltage,which reduced the voltage pressure effectively. According to equivalent circuits under different stages,the working process of the inverter was analyzed,realization condition of the soft switching and experimental parameters were designed. The experimental results demonstrate that main switching devices achieved zero-voltage soft switching at light and full load,and auxiliary switching devices achieve zero-current soft switching. Therefore,the proposed topology can reduce switching loss effectively.
A novel clamped resonant DC-link inverter was proposed to make the voltage across the clamped diode be no more than the voltage of DC-bus. There was only one auxiliary switch in auxiliary resonant circuit,and it was unnecessary to set clamped switch. Besides,the DC-link voltage can be clamped at 1. 1 ~ 1. 3 times of input DC-voltage,which reduced the voltage pressure effectively. According to equivalent circuits under different stages,the working process of the inverter was analyzed,realization condition of the soft switching and experimental parameters were designed. The experimental results demonstrate that main switching devices achieved zero-voltage soft switching at light and full load,and auxiliary switching devices achieve zero-current soft switching. Therefore,the proposed topology can reduce switching loss effectively.
引文
[1]CHEN Shaotang,Thomas A Lipo.A novel soft-switched PWM inverter for AC motor drives[J].IEEE Trans.on Power Electronics,1996,17(4):653.
[2]张德华,汪范彬,刘腾,等.一种新型的串联有源箝位谐振直流环节逆变器双幅控制策略[J].中国电机工程学报,2002,22(7):7.ZHANG Dehua,WANG Fanbin,LIU Teng,et al.A novel twoamplituded control strategy for series actively clamped resonant DC-link inverter[J].Proceedings of the CSEE,2002,22(7):7.
[3]孙德华,应建平,刘腾,等.一种新型有源箝位谐振直流环节逆变器控制策略[J].电工技术学报,2002,17(2):44.SUN Dehua,YING Jianping,LIU Teng,et al.A novel control strategy for the active clamped resonant DC link inverter[J].Transactions of China Electrotechnical Society,2002,17(2):44.
[4]李睿,马智远,徐德鸿.一种新型有源箝位软开关三相并网逆变器[J].中国电机工程学报,2011,31(30):30.LI Rui,MA Zhiyuan,XU Dehong.A novel active clamping soft switching grid-connected three-phase inverter[J].Proceedings of the CSEE,2011,31(30):30.
[5]张峰,李睿,凌志斌,等.一种有源箝位ZVS半桥逆变器[J].电力电子技术,2013,47(4):19.ZHANG Feng,LI Rui,LING Zhibin,et al.An active clamping ZVS half-bridge inverter[J].Power Electronics,2013,47(4):19.
[6]陈沁野,张德华,侯尧杰.双幅有源箝位谐振直流环节逆变器箝位电压平衡控制策略[J].机电工程,2012,29(6):696.CHEN Qinye,ZHANG Dehua,HOU Yaojie.Balance control strategy of two-amplitude actively clamped resonant DC-link inverter clamping voltage[J].Journal of mechanical&Electrical engineering,2012,29(6):696.
[7]祁晓蕾,阮新波.一种新的双幅控制有源箝位谐振直流环节逆变器[J].中国电机工程学报,2008,28(27):42.QI Xiaolei,RUAN Xinbo.A novel two-amplitude active-clamped resonant DC link inverter[J].Proceedings of the CSEE,2008,28(27):42.
[8]张德华,应建平,刘腾,等.双幅有源箝位谐振直流环节逆变器的分析和设计[J].中国电机工程学报,2002,22(9):48.ZHANG Dehua,YING Jianping,LIU Teng,et a1.A nalysis and design of two-amplitude active clamped resonant DC-link inverter[J].Proceedings of the CSEE,2002,22(9):48.
[9]杨迎化,谢顺依,钟祺,等.一种新型直流环节并联谐振软开关逆变器[J].中国电机工程学报,2008,28(12):50.YANG Yinghua,XIE Shunyi,ZHONG Qi,et al.A novel DC link parallel resonant soft switching inverter[J].Proceedings of the CSEE,2008,28(12):50.
[10]王军,徐龙祥.软开关技术在磁悬浮轴承功率放大器中的应用[J].电工技术学报,2009,24(6):85.WANG Jun,XU Longxiang.Application of power amplifier for active magnetic bearing using soft switching technology[J].Transactions of China Electrotechnical Society,2009,24(6):85.
[11]王强,单瑞香,王天施,等.单相全桥谐振直流环节软开关逆变器[J].电机与控制学报,2017,21(3):38.WANG Qiang,SHAN Ruixiang,WANG Tianshi,et al.Singlephase full-bridge resonant DC-link soft-switching inverter[J].Electric Machines and Control,2017,21(3):38.
[12]王强,唐朝垠,王天施,等.结构简单的谐振极型零电流软开关逆变器[J].电机与控制学报,2016,20(7):102.WANG Qiang,TANG Chaoyin,WANG Tianshi,et al.Resonant pole zero current soft-switcing inverter with simple structure[J].Electric Machines and Control,2016,20(7):102.
[13]王强,唐朝垠,王天施,等.用于无刷直流电机驱动的谐振极软开关逆变器[J].电机与控制学报,2017,21(6):59.WANG Qiang,TANG Chaoyin,WANG Tianshi,et al.A resonant pole soft-switching inverter for brushless DC motor drives[J].Electric Machines and Control,2017,21(6):59.
[14]王强,唐朝垠,王天施,等.辅助电路无储能电容的谐振直流环节软开关逆变器[J].电机与控制学报,2017,21(8):78.WANG Qiang,TANG Chaoyin,WANG Tianshi,et al.Resonant DC link soft-switching inverter without storage capacitor in auxiliary circuit[J].Electric Machines and Control,2017,21(8):78.
[2]张德华,汪范彬,刘腾,等.一种新型的串联有源箝位谐振直流环节逆变器双幅控制策略[J].中国电机工程学报,2002,22(7):7.ZHANG Dehua,WANG Fanbin,LIU Teng,et al.A novel twoamplituded control strategy for series actively clamped resonant DC-link inverter[J].Proceedings of the CSEE,2002,22(7):7.
[3]孙德华,应建平,刘腾,等.一种新型有源箝位谐振直流环节逆变器控制策略[J].电工技术学报,2002,17(2):44.SUN Dehua,YING Jianping,LIU Teng,et al.A novel control strategy for the active clamped resonant DC link inverter[J].Transactions of China Electrotechnical Society,2002,17(2):44.
[4]李睿,马智远,徐德鸿.一种新型有源箝位软开关三相并网逆变器[J].中国电机工程学报,2011,31(30):30.LI Rui,MA Zhiyuan,XU Dehong.A novel active clamping soft switching grid-connected three-phase inverter[J].Proceedings of the CSEE,2011,31(30):30.
[5]张峰,李睿,凌志斌,等.一种有源箝位ZVS半桥逆变器[J].电力电子技术,2013,47(4):19.ZHANG Feng,LI Rui,LING Zhibin,et al.An active clamping ZVS half-bridge inverter[J].Power Electronics,2013,47(4):19.
[6]陈沁野,张德华,侯尧杰.双幅有源箝位谐振直流环节逆变器箝位电压平衡控制策略[J].机电工程,2012,29(6):696.CHEN Qinye,ZHANG Dehua,HOU Yaojie.Balance control strategy of two-amplitude actively clamped resonant DC-link inverter clamping voltage[J].Journal of mechanical&Electrical engineering,2012,29(6):696.
[7]祁晓蕾,阮新波.一种新的双幅控制有源箝位谐振直流环节逆变器[J].中国电机工程学报,2008,28(27):42.QI Xiaolei,RUAN Xinbo.A novel two-amplitude active-clamped resonant DC link inverter[J].Proceedings of the CSEE,2008,28(27):42.
[8]张德华,应建平,刘腾,等.双幅有源箝位谐振直流环节逆变器的分析和设计[J].中国电机工程学报,2002,22(9):48.ZHANG Dehua,YING Jianping,LIU Teng,et a1.A nalysis and design of two-amplitude active clamped resonant DC-link inverter[J].Proceedings of the CSEE,2002,22(9):48.
[9]杨迎化,谢顺依,钟祺,等.一种新型直流环节并联谐振软开关逆变器[J].中国电机工程学报,2008,28(12):50.YANG Yinghua,XIE Shunyi,ZHONG Qi,et al.A novel DC link parallel resonant soft switching inverter[J].Proceedings of the CSEE,2008,28(12):50.
[10]王军,徐龙祥.软开关技术在磁悬浮轴承功率放大器中的应用[J].电工技术学报,2009,24(6):85.WANG Jun,XU Longxiang.Application of power amplifier for active magnetic bearing using soft switching technology[J].Transactions of China Electrotechnical Society,2009,24(6):85.
[11]王强,单瑞香,王天施,等.单相全桥谐振直流环节软开关逆变器[J].电机与控制学报,2017,21(3):38.WANG Qiang,SHAN Ruixiang,WANG Tianshi,et al.Singlephase full-bridge resonant DC-link soft-switching inverter[J].Electric Machines and Control,2017,21(3):38.
[12]王强,唐朝垠,王天施,等.结构简单的谐振极型零电流软开关逆变器[J].电机与控制学报,2016,20(7):102.WANG Qiang,TANG Chaoyin,WANG Tianshi,et al.Resonant pole zero current soft-switcing inverter with simple structure[J].Electric Machines and Control,2016,20(7):102.
[13]王强,唐朝垠,王天施,等.用于无刷直流电机驱动的谐振极软开关逆变器[J].电机与控制学报,2017,21(6):59.WANG Qiang,TANG Chaoyin,WANG Tianshi,et al.A resonant pole soft-switching inverter for brushless DC motor drives[J].Electric Machines and Control,2017,21(6):59.
[14]王强,唐朝垠,王天施,等.辅助电路无储能电容的谐振直流环节软开关逆变器[J].电机与控制学报,2017,21(8):78.WANG Qiang,TANG Chaoyin,WANG Tianshi,et al.Resonant DC link soft-switching inverter without storage capacitor in auxiliary circuit[J].Electric Machines and Control,2017,21(8):78.