两种双环控制方式对并联逆变器的影响

电压电流双环控制策略对单相逆变电源有一定的优越性,不同的采样电流方式对逆变电源输出电压外特性有着不同的影响。在控制参数一致的情况下进行对比分析,电感电流反馈方式对其输出电压外特性的影响较大,对并联逆变电源的环流影响较小;电容电流反馈对输出电压外特性的影响较小,对并联逆变电源的环流影响较小,所以文中并联系统采用电容电流反馈方式作为内环调节;通过MATLAB软件中的simulink工具验证了理论的正确性。

Two Double-Loop Control Methods Effect on Parallel Inverters

Voltage and current double-loop control strategy for single-phase inverter has some advantages,different ways of sampling current have different effects on inverter output voltages.In the case of the same control parameters,the inductor current feedback mode greater impact on the external characteristics output voltage,its parallel inverter’s circulation is less affected;capacitor current feedback smaller impact on the external characteristics of output voltage,its parallel inverter’s circulation is less affected.Therefore in this article the parallel system takes the capacitor current feedback method as the inner loop regulation.It verifies the correctness of the theory by simulink in MATLAB software.