摘要
针对Z源逆变器母线电压有效值二倍频于输出正弦波的脉动分量现象进行了讨论,详细分析了该现象的成因、危害及影响因素,并提出了抑制方法,同时利用仿真模型对Z源逆变器母线电压有效值二倍频脉动分量的各影响因素进行对比测试,得到的仿真结果验证了分析的准确性。在分析的基础上,提出电流内环中加入重复控制策略的方式来抑制母线电压二次谐波对于输出电压的影响,仿真和实验结果都验证了控制策略的有效性。
A detailed discussion about second harmonic in bus voltage of Z source inverter is made and an analysis of the causes, the harms, and the influence factors of the phenomenon is also given. Furthermore, a suppression method was proposed according to the phenomenon and the contrastive simulation results proved the accuracy of the analysis. Finally, based on the above analysis, a control strategy with repetitive control strategy in inter current loop to suppress the influence of the second harmonic in the bus voltage was proposed and both the simulation results and the experimental results prove the validity of the control strategy.
出处
《电机与控制学报》
EI
CSCD
北大核心
2013年第6期22-28,共7页
Electric Machines and Control
基金
天津市重点基金(11CZDJC22900)
关键词
Z源型逆变器
二次谐波
重复控制
母线电压
电流内环
Z source inverter
second harmonic
repetitive control
bus voltage
inner current loop
