逆变器并联系统的等效电路  

Equivalent Circuit of Parallel Inverters

作　　者：吴云亚[1] 

机构地区：[1]盐城工学院实验教学部,江苏盐城224051

出　　处：《盐城工学院学报（自然科学版）》2010年第1期47-51,共5页Journal of Yancheng Institute of Technology:Natural Science Edition

摘　　要：由典型的双闭环逆变器的控制框图,根据频率是否在逆变器的带宽范围内,得出了逆变器在直流、基波频率和高次谐波频率下的等效电路。说明了直流等效电路和基波频率下的逆变器等效电路与控制参数和主电路参数都相关,而高频等效电路只与逆变器主电路中的滤波器参数有关。根据单台逆变器的等效电路得到了并联系统的等效电路,给出了并联系统的在不同等效电路下环流的大小。仿真结果验证了所给等效电路的正确性。The equivalent circuits of inverter in DC,fundamental frequency and high frequency are acquired from the typical double-loop inverter control diagram whether the frequency is in range of inverter bandwidth or not.This paper illustrates that the DC equivalent circuit and the fundamental frequency equivalent circuit are relate to not only the control parameters,but also the main circuit parameters of inverter.But the high frequency equivalent circuit is only relates to the main circuit parameters of inverter.The equivalent circuit of parallel inverters is acquired from the single inverter equivalent circuit and the circulating current of parallel system is given in condition of different frequency.The simulation proves the correctness of proposed equivalent circuits.

关 键 词：逆变器 并联 输出阻抗 等效电路 环流 

分 类 号：TM461[电气工程—电器]