摘要
三相Split源逆变器是一种可以实现升压作用的新型变换器,通常可采用传统的SVPWM调制。本文研究了一种改进的SVPWM调制策略,通过对传统七段式SVPWM中零矢量的重新分配,能够有效提高逆变器的升压能力。仿真结果表明,相比传统SVPWM调制策略,采用改进SVPWM调制具有更高的输出电压和更好的THD特性,并且能够有效减少电感电流的低频分量。
Three-phase split source inverter is a novel converter whichembracesthe boost capability,it usually adopts the traditional SVPWM modulation strategy. In this article, an improved SVPWM modulation strategy is studied. Through redistributing the zero vector in the traditional seven state SVPWM method, the new strategy can effectively improve the boost capability.of the inverter. The proposed strategy is verified by simulation results. Compared with the traditional strategy, the improved SVPWM modulation strategy has higher output voltage and better THD characteristics, also effectively reduces the low frequency component in the inductor current.
出处
《电气技术》
2018年第1期15-19,共5页
Electrical Engineering
