摘要
Abstract
For T tri-level photovoltaic(PV)grid inverter,a SPWM modulation and voltage controller was proposed, the modulation strategy not only controlled the midpoint potential oscillation suppression ,but also controlled the neutral voltage offset control. Unfenced PV grid inverter have the problems of leakage current ,the leakage current and common mode voltage were found to be related by analysis,so the switch order was rearranged,parted with larger common-mode voltage,so as to realize the inhibition of leakage current. Finally,the simulation verifies the correctness of the proposed modulation and control.关键词
T型三电平逆变器/中点电位振荡控制/共模电压抑制/漏电流Key words
three-level T-type inverter/neutral-point potential(NP)oscillation control/common mode voltage suppression/leakage current分类
信息技术与安全科学
