摘要
通过分析三相四桥臂逆变器工作原理及工作模式,推导出三相四桥臂逆变器共模电压的计算公式,由此提出一种运用于三相四桥臂逆变器的改进型SVPWM调制技术。针对新的调制技术,运用Matlab/Simulink进行建模仿真。仿真结果表明,采用三相四桥臂逆变器改进型SVPWM控制技术在不改变直流电压利用率和输出电流谐波含量的情况下,能有效地抑制变流器共模干扰。
This paper derived the calculating formula of the common-mode voltage of three-phase four-leg inverter by analyzing the working principle and working mode of three-phase inverter with four bridge legs. Then the improved SVPWM modulation technology was proposed. The new modulation technology had been modeled and simulated by using Matlab/Simulink. The simulation result shows that the new SVPWM modulation technology applied in three-phase inverter with four bridge legs can restrain common mode interference effectively without changing DC voltage utilization and harmonic content of output current.
出处
《机车电传动》
北大核心
2010年第2期1-4,21,共5页
Electric Drive for Locomotives
关键词
三相四桥臂逆变器
共模干扰
矢量控制
SVPWM
three-phase inverter with four bridge legs
common mode interference
vector control
SVPWM
作者简介
关振宏（1967－）．男，硕士，副教授，主要研究方向为电力电子与电力传动
