摘要
从优化双频并网逆变器效率的角度出发,根据对双频并网逆变器损耗的分析,提出了一种新型控制策略,即低频部分采用移相调压控制,高频部分采用无差拍控制,并将该控制方式与传统的控制方式比较。理论分析和仿真试验验证了该新型控制策略能够大大提高双频并网逆变器的效率。
Dual-frequency grid-connected inverter consists of two parallel inverters. Part of it works in the high-frequency area to conform the output wave quality. The other works in the low-frequency area to transit most of the power. Two parts work independently and cooperatively, improving the efficiency of the inverter. This paper presented a new control strategy based on the losses analysis of traditional control strategy of dual-frequency grid-connected inverter in order to optimize the efficiency of the inverter, and compared these two control strategies. The Matlab/Simulink and theory analysis verifies that this new control strategy can improve the efficiency a lot.
出处
《低压电器》
2012年第20期25-29,33,共6页
Low Voltage Apparatus
关键词
并网
双频逆变器
控制策略
损耗分析
效率
grid-connected
dual-frequency inverter
control strategy
losses analysis
efficiency
