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文章摘要
VIENNA整流器中点电位平衡控制策略研究
Research on point position balance control of VIENNA rectifier
Received:October 30, 2018  Revised:October 30, 2018
DOI：10.19753/j.issn1001-1390.2020.06.019
中文关键词: 整流器  载波移相技术  14脉波调制  中点电位平衡
英文关键词: Rectifier  Carrier phase shift  14 pulse modulation  Midpoint potential balance
基金项目:含微电网配电系统电能质量分析与控制方法研究(51477070)
Author NameAffiliationE-mail
Li Zhengming* Jiangsu University Institute of electrical and information engineering,Jiangsu Zhenjiang 212000 1205713531@qq.com 
Kong Ming China 1205713531@qq.com 
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中文摘要:
      针对三相三电平VIENNA整流器存在的中点电位波动问题,本文在传统载波移相调制技术(CPS-PWM)的基础上进行改进,提出一种14脉波的中点电位平衡控制策略。首先根据等效电路分析VIENNA整流器工作原理,其次根据空间矢量调制原理分析载波移相调制过程,确定中点电位不平衡原因,最后根据面积等效原理通过高频PWM异或控制脉冲实现分解冗余和非冗余矢量成分,并设立中点电位补偿系数D调节分解比例保证中点电位平衡。实验结果表明,本文所提出的控制算法不仅平抑中点电位波动、稳定直流侧输出电压还降低了网侧电流畸变且原理简明易于实现。
英文摘要:
      
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