摘要
对三相三线三电平VIENNA整流器进行研究,构建了整流器电压和电流双环控制环路。针对该整流器降低开关损耗和中点电位控制问题,在分析冗余小矢量对中点电位影响的基础上,首先提出了2种新的对中点电位影响相反的五段式断续调制序列,在此基础上又提出了旨在降低开关损耗的集中式大电流不动作调制原则并引入一角度调节量对不动作区域进行拓展,实现了兼顾中点电位平衡控制的同时最大限度地降低开关损耗。仿真和实验进一步验证了所提调制策略的有效性。
Three-phase three wire three-level VIENNA rectifier was studied,and the voltage and current double loop control loop of rectifier was constructed.Due to the problems of reducing switching loss and neutral-point voltage control for rectifier,by analysing the influence of the redundant small vectors on the neutral-point potential,two new five-segment intermittent modulation sequences with opposite effects on neutral-point potential were put out,and then a centralized large current non-action modulation strategy which aims at reducing switching loss was proposed and an angle control quantity was introduced to expand the non-action area,which realized the balance control of neutralpoint potential while minimizing the switching loss.Simulations and experiments validate the feasibility of the new modulation strategy.
作者
谢积锦
刘斌
何永玲
刘桂英
谷良田
王跃飞
XIE Jijin;LIU Bin;HE Yongling;LIU Guiying;GU Liangtian;WANG Yuefei(Guangxi Colleges and Universities Key Laboratory Breeding Base of Coastal Mechanical Equipment Design,Manufacturing and Control,Beibu Gulf University,Qinzhou 535011,Guangxi,China;Information Engineering College,Nanchang Hangkong University,Nanchang 330063,Jiangxi,China;Physics and Electronics College,Guangxi Teachers Education University,Nanning 530023,Guangxi,China;Key Laboratory of Big Data Tesource Utilization of Qinzhou,Qinzhou 535011,Guangxi,China)
出处
《电气传动》
北大核心
2020年第4期45-52,共8页
Electric Drive
基金
国家自然科学资金项目(61463037)
广西高校中青年提升项目(KY2016YB479)
广西高校临海机械装备设计制造及控制重点实验室培育基地主任课题资金资助(GXLH2014ZD-02,520175013,2013YB143)。
关键词
开关损耗
中点电位平衡
开关序列
扇区
switching loss
neutral-point potential balance
switching sequence
sector
