摘要
针对传统整流器功率因数低、谐波含量高、损耗大等缺点,以单相三电平PWM整流器作为研究对象,提出一种基于双环控制的SVPWM控制策略。通过SVPWM双环控制实现电流的快速响应、提高功率因数、降低谐波、减少损耗。对于单相三电平整流器中点电压不平衡问题,通过合理选择调制序列,和冗余小矢量,有效控制直流侧中点电压平衡。最后通过simulink仿真验证该策略的有效性。
A SVPWM control strategy based on double loop control is proposed by taking single-phase three-level rectifier as the research object to solve the problem of the characteristics of low power factor,high harmonic content and large loss in the traditional rectifier.Through SVPWM double loop control,it can achieve fast response of current,increase power factor,reduce harmonics and reduce wastage.The neutral point voltage balance of the DC side is effectively controlled by selecting the modulation sequence and the redundant small vector for the point voltage imbalance in the single phase three-level rectifier.Finally,the effectiveness of the strategy is verified by Simulink simulation.
作者
武浩
李森
WU Hao;LI Sen(College of Electrical Engineering,Qingdao University,Qingdao 266071,China;Tai＇an Power Supply Company,State Grid Shandong Electric Power Company,Tai＇an 271000,China)
出处
《通信电源技术》
2018年第9期21-22,25,共3页
Telecom Power Technology
