基于三相四桥臂逆变器消除传导共模电压的三维矢量脉宽调制技术研究  

A study of three-dimensional vector pulse width modulation technique based on three-phase four-leg inverter with conducted common mode voltage elimination

作　　者：顾宇彬 黄健 程龙 王晨 GU Yubin;HUANG Jian;CHENG Long;WANG Chen(School of Electrical Engineering,Anhui Polytechnic University,Wuhu,Anhui 241000)

机构地区：[1]安徽工程大学电气工程学院,安徽芜湖241000

出　　处：《电气技术》2024年第12期1-11,共11页Electrical Engineering

基　　金：2022年度安徽省高校重点项目(2022AH050957);安徽工程大学青年科研基金(Xjky2022038)。

摘　　要：为了降低三相四线制逆变电源系统对大体积共模扼流圈的依赖,以三相四桥臂逆变器为研究对象,将三维矢量脉宽调制(3D-SVPWM)策略与传导共模电压消除方法(CMVEM)相结合,提出一种零共模电压三维矢量脉宽调制(3D-ZCPWM)策略。该调制策略在消除传导共模电压的同时保证了对零序分量控制的自由度,补充了现有CMVEM中对零序分量控制自由度的缺失。仿真和实验结果表明,本文策略对共模电压的消除能力强,且基于本文策略的三相四桥臂逆变器具有承载不平衡负载并保持输出电压稳定的能力。In order to reduces the reliance on large common mode chokes for 3-phase 4-wire inverter power systems,three-phase four-leg inverter is taken as the research object.A 3-dimensional-zero common mode voltage vector pulse width modulation(3D-ZCPWM)is proposed by combining 3-dimensional-space vector pulse width modulation(3D-SVPWM)with conducted common mode voltage elimination method(CMVEM),which eliminates the conducted common mode voltage while guaranteeing the freedom degree of zero-sequence component control.The lack of freedom degree of the zero-sequence component control in the existing CMVEM is supplemented.The simulation and experiment results show that the strategy proposed in this paper has a strong ability to eliminate the common mode voltage and the three-phase four-leg inverter based on this strategy has the ability to withstand unbalanced loads and maintain stable output voltage.

关 键 词：三维矢量脉宽调制 共模电压 三相四线制电源 三相四桥臂逆变器 

分 类 号：TM464[电气工程—电器] TN911.3[电子电信—通信与信息系统]