中国电机工程学报2024，Vol.44Issue(8)：3202-3212,中插22,12.DOI:10.13334/j.0258-8013.pcsee.230314
基于钳位方式切换的Vienna整流器载波断续脉冲宽度调制策略
Carrier-based Discontinuous PWM Strategy Based on Clamp Mode Switching for Vienna Rectifiers
张志坚 1张国强 1李斌兴 1王奇维 1丁大尉 1王高林 1徐殿国1
作者信息
- 1. 哈尔滨工业大学电气工程及自动化学院,黑龙江省 哈尔滨市 150001
- 折叠
摘要
Abstract
When a Vienna rectifier operates at unbalanced DC-links,the traditional carried-based discontinuous pulse-width modulation(CB-DPWM)increases the input current harmonics and the neutral point voltage fluctuation.To solve the above problems,a CB-DPWM strategy based on clamp mode switching is proposed.To reduce the input current harmonics,the subsectors and the zero-sequence components are redivided and calculated according to the modified voltage vectors.Then,the uniform CB-DPWM modulation wave is obtained,and the operation region is analyzed,which is in inverse proportion to the unbalance degree.Furthermore,the influences of different clamping modes on the neutral point voltage are analyzed based on the neutral point current.According to the unbalanced degree,the clamping modes are switched in real time to reduce the neutral point voltage fluctuation.At the same time,the switching action introduced by the clamp mode switching is reduced by the switching sequence optimization and clamp region judgement,which can improve the efficiency of Vienna rectifier.Finally,the effective of the proposed strategy is verified on a Vienna rectifier experimental platform.关键词
Vienna 整流器/直流电压不平衡/电流谐波/中点电压波动/载波断续脉宽调制/开关序列优化Key words
Vienna rectifier/unbalanced DC-links/current harmonics/neutral point voltage fluctuation/carried-based discontinuous pulse-width modulation(CB-DPWM)/switching sequence optimization分类
信息技术与安全科学引用本文复制引用
张志坚,张国强,李斌兴,王奇维,丁大尉,王高林,徐殿国..基于钳位方式切换的Vienna整流器载波断续脉冲宽度调制策略[J].中国电机工程学报,2024,44(8):3202-3212,中插22,12.
