电力系统保护与控制2025，Vol.53Issue(8)：96-104,9.DOI:10.19783/j.cnki.pspc.240899
线性负载下三电平逆变器的两相箝位断续脉宽调制策略研究
Research on two-phase clamped discontinuous pulse width modulation strategy for three-level inverters under linear load
摘要
Abstract
The discontinue pulse width modulation(DPWM)strategy allows each phase of the inverter switching device to remain inactive for one-third of a cycle,thereby reducing the switching loss.However,there is still room for further improvement in loss reduction.This paper takes the active neutral point clamped(ANPC)three-level inverter as the research object,and proposes a two-phase clamped DPWM(TPCDPWM)strategy suitable for three-level inverter.This method approximates the space reference vector as a composite vector synthesized by two adjacent vectors while minimizing the synthesis error to determine the modulation region.On this basis,the switching loss,synthesis error,harmonic characteristics,and neutral point balancing ability under various modulation strategies are analyzed and compared.Finally,a comparative experimental study of space vector PWM(SVPWM)and TPCDPWM strategies is carried out,and it is verified that the proposed TPCDPWM strategy enables each phase switch of the ANPC three-level inverter to remain inactive for two-third of a cycle,significantly reducing switching loss.关键词
ANPC三电平逆变器/两相箝位断续脉宽调制/开关损耗/空间矢量调制Key words
ANPC three-level inverter/two-phase clamped discontinue PWM/switching loss/space vector modulation引用本文复制引用
陈怡薇,徐永海,袁敞,宋昕一,孙曙光..线性负载下三电平逆变器的两相箝位断续脉宽调制策略研究[J].电力系统保护与控制,2025,53(8):96-104,9.基金项目
This work is supported by the National Key Research and Development Program of China(No.2021YFB2601403). 国家重点研发计划项目资助(2021YFB2601403) （No.2021YFB2601403）
