新型电压自均衡开关电容多电平逆变器  

Novel voltage self-balancing switched capacitor multilevel inverter

作　　者：李宋 邵云鹏 叶满园 陈银波 刘文芳 邢瑞新 喻生铭 LI Song;SHAO Yunpeng;YE Manyuan;CHEN Yinbo;LIU Wenfang;XING Ruixin;YU Shengming(School of Electrical and Automation Engineering,East China Jiaotong University,Nanchang 330013,China)

机构地区：[1]华东交通大学电气与自动化工程学院,江西南昌330013

出　　处：《电机与控制学报》2024年第3期157-168,共12页Electric Machines and Control

基　　金：国家自然科学基金(51767007);江西省重点研发项目(20202BBEL53034)。

摘　　要：为了使用更少的器件实现更多的输出电平,同时解决传统多电平逆变器开关器件在高电压下工作时,其电压应力较大,容易损坏的问题,提出一种新型单电源开关电容多电平逆变器拓扑。该开关电容逆变器拓扑通过研究开关电容技术与级联H桥逆变器的结合,采用脉宽调制的方式经过逻辑组合进行调制,实现了高效的电压增益和电平输出。在保证电容电压自均衡的前提下,仅使用单个直流电源输入,产生三倍电压增益的七电平输出。然后,为了进一步拓展该逆变器的应用范围,介绍所提逆变器的扩展结构,并简要分析其工作模式。同时与其他类似拓扑进行对比,证明该拓扑优势。最后为了验证理论分析的正确性,设计了仿真和实验样机,对逆变器的性能进行了详细测试。In order to achieve more output levels with fewer devices,and to solve the problem that the voltage stress of traditional multi-level inverter switching devices is large and easy to be damaged when working at high voltage,a new single-power switched capacitor multilevel inverter topology was proposed.The switching capacitor inverter topology was modulated by logic combination by studying the combination of switching capacitor technology and cascaded H-bridge inverter,and the high-efficiency voltage gain and level output were realized by using pulse width modulation through logic combination.On the premise of ensuring the self-equalization of the capacitor voltage,only a single DC power input was used to produce a seven-level output with three times the voltage gain.Then,in order to further expand the application range of the inverter,the expansion structure of the proposed inverter was introduced,and its working mode was briefly analyzed.At the same time,it is compared with other similar topologies to prove the advantages of this topology.Finally,in order to verify correctness of the theoretical analysis,simulation and experimental prototypes were designed,and the performance of the inverter was tested in detail.

关 键 词：开关电容 单输入 基本单元 电压应力 电容电压自均衡 

分 类 号：TM46[电气工程—电器]