中国电机工程学报2026，Vol.46Issue(8)：3371-3381,中插25,12.DOI:10.13334/j.0258-8013.pcsee.251860
低共模残压的改进型两电平四桥臂AZSPWM1方法
Improved AZSPWM1 With Low Common-mode Voltage for Two-level Four-leg Converter
郑名皓 1袁立强 1汪靖峰 1陈凯楠 1杨伟涛 2盛超2
作者信息
- 1. 电力系统及大型发电设备安全控制和仿真国家重点实验室(清华大学电机系),北京市 海淀区 100084
- 2. 南方电网电力科技股份有限公司,广东省 广州市 510080
- 折叠
摘要
Abstract
In flexible interconnection systems of distribution networks,common-mode voltage generated by power electronic converters may lead to a series of adverse issues such as leakage currents.The reduced common-mode voltage pulse width modulation(RCMV-PWM)techniques are widely studied and emphasized to deal with the problem.In four-wire systems,two-level four-leg RCMV-PWM often involves simultaneous switching actions of two different bridge arms.In such cases,the dead-time effect of interlocked switching devices may introduce undesired common-mode voltage spikes,increasing residual common-mode voltage and weakening the suppression effect.This paper proposes a modified active-zero-state PWM(AZSPWM)method based on current prediction and active disturbance dead-time compensation,which effectively reduces residual common-mode voltage and improves power quality.The paper presents a prediction method for the converter output current,achieving dead-time compensation by adjusting the amplitude of the modulation wave.Furthermore,to address the inaccuracy of current direction prediction near zero-crossing points,this paper introduces an active disturbance control method to regulate the current direction and enhance prediction accuracy.Simulation and experimental results verify the effectiveness of the proposed method.关键词
共模电压抑制脉宽调制/死区补偿/两电平四桥臂变换器/三相四线Key words
reduced common-mode voltage pulse width modulation(RCMV-PWM)/dead-time compensation/two-level four-leg converter/three-phase four-wire system分类
信息技术与安全科学引用本文复制引用
郑名皓,袁立强,汪靖峰,陈凯楠,杨伟涛,盛超..低共模残压的改进型两电平四桥臂AZSPWM1方法[J].中国电机工程学报,2026,46(8):3371-3381,中插25,12.
