[关键词]
[摘要]
抑制三相逆变器共模电压的无零矢量脉宽调制(NZVPWM)发波技术,其死区效应会造成共模抑制失效。因此,提出一种改进的等效零矢量脉宽调制(AZSVPWM)技术,分析了可实现满调制度的死区约束条件,通过设置合理的死区范围,在宽调制范围内可保证对共模电压的有效抑制。通过仿真和试验验证了分析的正确性。
[Key word]
[Abstract]
The non-zero vector pulse width modulation (NZVPWM) wave technology suppresses the common-mode voltage (CMV) of the three-phase inverter. But its dead zone effect can cause the failure of common-mode suppression. An improved active zero space vector pulse width modulation (AZSVPWM) technology is proposed, and the dead zone constraint conditions which can achieve full modulation are analyzed. By setting a reasonable dead zone range, the common mode voltage can be effectively suppressed in a wide modulation range. The simulation and experimental results verify the validity of the analysis.
[中图分类号]
[基金项目]