一种新型开关电容准谐振多电平逆变器  

Novel Switched Capacitor Quasi-resonant Multi-level Inverter

作　　者：梁国壮 聂辰浩 田涵雷 LIANG Guozhuang;NIE Chenhao;TIAN Hanlei(School of Electrical Engineering,Hebei University of Science and Technology,Shijiazhuang 050018,China;School of Electrical Engineering,Sichuan University,Chengdu 610065,China)

机构地区：[1]河北科技大学电气工程学院,石家庄050018 [2]四川大学电气工程学院,成都610065

出　　处：《电源学报》2024年第2期121-131,共11页Journal of Power Supply

基　　金：国家自然科学基金资助项目(61876059);河北省通用航空增材制造协同创新中心开放基金课题资助项目(2018DQ01)。

摘　　要：针对现有多电平逆变器充电过程存在电流尖峰和电压波动问题,提出一种新型准谐振五电平逆变器。简言之,采用载波层叠脉宽调制方案,将开关电容技术与传统五电平逆变器相结合,减小了前级承受的累加电平,实现了五电平输出;并在电容充电过程与串接电感谐振,消除了电流尖峰和电压波动,同时减轻了电容的发热问题,延长电路的使用寿命。最后,对所提结构进行了仿真验证,其结果证明了所提逆变器结构方案的正确性和可行性。Aimed at the problems of current spikes and voltage fluctuations in the charging process of existing multi-level inverters,a novel quasi-resonant five-level inverter is proposed in this paper.A carrier-stacked pulse width modulation scheme is adopted,and the switched capacitor technology is combined with the traditional five-level inverter,which reduces the accumulated level at the previous stage and realizes the output of five-level voltage.In addition,the capacitor charging process and the series inductance resonate to eliminate current spikes and voltage fluctuations,while reducing the heating problem of the capacitor and prolonging the service life of the circuit.Finally,simulation verification is carried out,and results prove the correctness and feasibility of the scheme for the proposed inverter structure.

关 键 词：多电平逆变器 开关电容 载波层叠脉宽调制 准谐振 

分 类 号：TM464[电气工程—电器]