一种新型无电解电容的单级Zeta逆变器
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摘要
传统的电压型逆变器只能实现降压逆变,且使用电解电容,体积大、可靠性低,应用于新能源发电系统等领域时具有很大的局限性。提出一种新型无电解电容的单级非隔离逆变器拓扑,该逆变器由2个改进型Zeta电路组合而成,所含开关器件及无源器件数量较少,以容值较小的非电解电容作为中间储能元件,具有体积小、可靠性高、使用寿命长的优点。分析新型逆变器的工作原理,推导得出中间储能电容电压公式及逆变器增益;建立该逆变器数学模型,设计闭环调节器,并进行仿真验证;在理论分析和仿真实验的基础上,对新型无电解电容的单级Zeta逆变器搭建实验样机,实验结果证明,该逆变器具有良好的动静态性能。
The traditional voltage source inverter can only operate in buck operation, it uses the electrolytic capacitor,which leads to the large size and low reliability, and has limitations when applied to renewable energy power generation systems. This paper proposed a new type of single-stage non-isolated inverter topology without electrolytic capacitor.The inverter is composed of two modified Zeta circuits. The number of switching devices and passive components is small,and the non-electrolytic capacitor with small capacitance is used as the intermediate energy storage component, which has the advantages of small volume, high reliability and long service life. This paper analyzed the working principle of the new inverter, derived the intermediate storage capacitor voltage and the gain of the inverter. The mathematical model of the inverter was established, and the closed-loop regulator was designed and verified by simulation. Based on theoretical analysis and simulation experiments, the experimental prototype of a single-stage Zeta inverter with non-electrolytic capacitor was built. The experimental results show that the inverter has good dynamic and static performance.
The traditional voltage source inverter can only operate in buck operation, it uses the electrolytic capacitor,which leads to the large size and low reliability, and has limitations when applied to renewable energy power generation systems. This paper proposed a new type of single-stage non-isolated inverter topology without electrolytic capacitor.The inverter is composed of two modified Zeta circuits. The number of switching devices and passive components is small,and the non-electrolytic capacitor with small capacitance is used as the intermediate energy storage component, which has the advantages of small volume, high reliability and long service life. This paper analyzed the working principle of the new inverter, derived the intermediate storage capacitor voltage and the gain of the inverter. The mathematical model of the inverter was established, and the closed-loop regulator was designed and verified by simulation. Based on theoretical analysis and simulation experiments, the experimental prototype of a single-stage Zeta inverter with non-electrolytic capacitor was built. The experimental results show that the inverter has good dynamic and static performance.
引文
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[21]曾正,邵伟华,宋春伟,等.电压源逆变器典型控制方法的电路本质分析[J].中国电机工程学报,2016,36(18):4980-4989.Zeng Zheng,Shao Weihua,Song Chunwei,et al.Circuit-based analysis of typical control schemes of voltage-source inverter[J].Proceedings of the CSEE,2016,36(18):4980-4989(in Chinese).
[2]Kouro S,Leon J I,Vinnikov D,et al.Grid-connected photovoltaic systems:an overview of recent research and emerging PV converter technology[J].IEEE Industrial Electronics Magazine,2015,9(1):47-61.
[3]王立乔,孙孝峰.分布式发电系统中的光伏发电技术[M].2版.北京:机械工业出版社,2014:1-7.Wang Liqiao,Sun Xiaofeng.Photovoltaic power generation technology in distributed generation systems[M].2nd ed.Beijing:China Machine Press,2014:1-7(in Chinese).
[4]陈雪峰,许俊阳,陈道炼.双模式控制宽输入电压组合式升压逆变器[J].中国电机工程学报,2018,38(7):2095-2103.Chen Xuefeng,Xu Junyang,Chen Daolian.Two modes controlled combined step-up inverter with wide range varied input DC voltage[J].Proceedings of the CSEE,2018,38(7):2095-2013(in Chinese).
[5]董仙美,汤雨.适合宽输入电压的单级升降压逆变器[J].中国电机工程学报,2013,33(6):61-66.Dong Xianmei,Tang Yu.A single-stage boost-buck inverter for wide range of input voltage[J].Proceedings of the CSEE,2013,33(6):61-66(in Chinese).
[6]曾正,邵伟华,胡博容,等.Si C器件在光伏逆变器中的应用与挑战[J].中国电机工程学报,2017,37(1):221-232.Zeng Zheng,Shao Weihua,Hu Borong,et al.Chances and challenges of photovoltaic inverters with silicon carbide devices[J].Proceedings of the CSEE,2017,37(1):221-232(in Chinese).
[7]Kumar A,Sensarma P.A four-switch single-stage singlephase buck-boost inverter[J].IEEE Transactions on Power Electronics,2017,32(7):5282-5292.
[8]Khan A A,Cha H,Ahmed H F,et al.A highly reliable and high-efficiency quasi single-stage buck-boost inverter[J].IEEE Transactions on Power Electronics,2017,32(6):4185-4198.
[9]杨晓光,姜龙斌,冯俊博,等.一种新型高效无变压器型单相光伏逆变器[J].电工技术学报,2015,30(8):97-103.Yang Xiaoguang,Jiang Longbin,Feng Junbo,et al.A new high efficiency transformerless single-phase photovoltaic inverter[J].Transactions of China Electrotechnical Society,2015,30(8):97-103(in Chinese).
[10]王金华,顾云杰,胡斯登,等.一种二极管无源钳位的单相无变压器型光伏并网逆变拓扑研究[J].中国电机工程学报,2015,35(6):1455-1462.Wang Jinhua,Gu Yunjie,Hu Sideng,et al.A single-phase diode clamped transformerless PV grid-connected inverter[J].Proceedings of the CSEE,2015,35(6):1455-1462(in Chinese).
[11]胡存刚,姚培,张云雷,等.高效非隔离单相并网MOSFET逆变器拓扑及控制策略[J].电工技术学报,2016,31(13):82-91.Hu Cungang,Yao Pei,Zhang Yunlei,et al.Topology and control strategy for high-efficient non-isolated singlephase grid-connected MOSFET inverter[J].Transactions of China Electrotechnical Society,2016,31(13):82-91(in Chinese).
[12]汪飞,钟元旭,李林,等.基于集成三端口变换器的无电解电容LED驱动[J].电工技术学报,2016,31(23):189-198.Wang Fei,Zhong Yuanxu,Li Lin,et al.An electrolytic capacitor-less LED driver based on an integrated threeport converter[J].Transactions of China Electrotechnical Society,2016,31(23):189-198(in Chinese).
[13]王浩然,朱国荣,伏潇斌,等.无电解电容单相电力变换器直接脉动功率控制方法[J].中国电机工程学报,2016,36(13):3573-3581.Wang Haoran,Zhu Guorong,Fu Xiaobin,et al.A directly pulsation power control strategy for single-phase power converters with E-cap free[J].Proceedings of the CSEE,2016,36(13):3573-3581(in Chinese).
[14]潘启军,黄垂兵,邓晨,等.电解电容与薄膜电容的对比分析[J].海军工程大学学报,2014,26(2):5-9.Pan Qijun,Huang Chuibing,Deng Chen,et al.Comparative analysis of electrolytic capacitor and thin film capacitor[J].Journal of Naval University of Engineering,2014,26(2):5-9(in Chinese).
[15]吴南冰,林维明.一种无电解电容的单级复合LED驱动电路[J].电源学报,2016,14(1):61-67,73.Wu Nanbing,Lin Weiming.A composite single-stage LED driver without electrolytic capacitor[J].Journal of Power Supply,2016,14(1):61-67,73(in Chinese).
[16]Dong Hanjing,Xie Xiaogao,Jiang Lei,et al.An electrolytic capacitor-less high power factor LED driver based on a“One-and-a-half stage”forward-flyback topology[J].IEEE Transactions on Power Electronics,2018,33(2):1572-1584.
[17]Reddy U R,Narasimharaju B L.Single-stage electrolytic capacitor less non-inverting buck-boost PFC based AC-DC ripple free LED driver[J].IET Power Electronics,2017,10(1):38-46.
[18]王立乔,王欣,仇雷.一种新型单级非隔离双Cuk逆变器[J].中国电机工程学报,2014,34(6):846-854.Wang Liqiao,Wang Xin,Qiu Lei.A novel single-stage non-isolated dual Cuk inverter[J].Proceedings of the CSEE,2014,34(6):846-854(in Chinese).
[19]张占松,蔡宣三.开关电源的原理与设计[M].修订版.北京:电子工业出版社,2004:7-43.Zhang Zhansong,Cai Xuansan.The principle and design of switching power source[M].Beijing:Electronic Industry Press,2004:7-43(in Chinese).
[20]徐德鸿.电力电子系统建模及控制[M].北京:机械工业出版社,2006:40-43.Xu Dehong.Modeling and control for power electronics system[M].Beijing:China Machine Press,2006:40-43(in Chinese).
[21]曾正,邵伟华,宋春伟,等.电压源逆变器典型控制方法的电路本质分析[J].中国电机工程学报,2016,36(18):4980-4989.Zeng Zheng,Shao Weihua,Song Chunwei,et al.Circuit-based analysis of typical control schemes of voltage-source inverter[J].Proceedings of the CSEE,2016,36(18):4980-4989(in Chinese).