H型对称分布电容功率解耦电路  

H-shaped Symmetrical Distributed Capacitor Power Decoupling Circuit

作　　者：章勇高[1] 樊越 刘鹏[1] 迮思源 何明星 ZHANG Yonggao;FAN Yue;LIU Peng;ZE Siyuan;HE Mingxing(East China Jiaotong University,Nanchang 330013,Jiangxi Province,China)

机构地区：[1]华东交通大学,江西省南昌市330013

出　　处：《中国电机工程学报》2023年第2期738-749,共12页Proceedings of the CSEE

基　　金：国家自然科学基金项目(51467006)。

摘　　要：单相逆变器普遍存在二次纹波问题,容易造成系统不稳定和降低效率。文中在无附加开关管的情况下,仅保留H桥4个开关器件。此拓扑只需将交流侧原有滤波电容分裂成两组对称连接,同时可省略直流侧原有支撑电容。电路中差模保证功率输出,共模保证解耦,因此对系统中差模和共模分别独立控制。理论分析和仿真解释了系统的解耦情况和解耦后存在的电容电压不平衡情况,并从解耦精度及附加开关数量方面良好地阐述该拓扑的优越性,最后通过实验结果证明该拓扑在无需额外开关器件情况下良好的解耦性能。Single-phase inverters generally have secondary ripple problems,which can cause system instability and reduce efficiency.In this article,without additional switching tubes,only the original four switching devices of the H-bridge are retained.By splitting the original filter capacitor on the AC side into two symmetrical connections,the original supporting capacitor on the DC side could be omitted.The differential mode in the circuit guaranteed power output,and the common mode guaranteed decoupling,so the differential mode and common mode in the system are independently controlled.Theoretical analysis and simulation explain the decoupling of the system and the unbalanced capacitor voltage after decoupling,and explain the superiority of the topology in terms of decoupling accuracy and the number of additional switches.Finally,the experimental results prove that the topology has good decoupling performance without additional switching devices.

关 键 词：二次纹波 共模控制 单相逆变器 有源解耦 

分 类 号：TM46[电气工程—电器]