降低H/NPC变换器开关损耗的三段式SVPWM算法  

Three Segment SVPWM Algorithm Aiming at Low Switching Losses for H/NPC Converter

作　　者：张辑[1] 田洪[1] 魏荣宗[2] 郑雪钦[1] 

机构地区：[1]厦门理工学院,福建省高电压技术重点实验室,福建厦门361024 [2]国立台湾科技大学,电资学院,中国台湾台北90741

出　　处：《电力电子技术》2016年第10期11-13,共3页Power Electronics

基　　金：厦门市科技局项目(3502Z20153016);福建省自然基金项目(XYK201403);厦门理工学院教改项目(YG20-150323)~~

摘　　要：针对七段式SVPWM在多电平变换器领域存在的开关序列设计不灵活、开关频率降低时输出电压谐波畸变严重的问题,给出一种适用于H桥/中点箝位(H/NPC)五电平变换器的三段式SVPWM算法,可有效避免严格的开关约束条件,能在降低开关损耗的同时,改善输出电压谐波性能。最后,基于H/NPC五电平变换器平台验证了该三段式SVPWM的有效性与可行性,并与常规七段式SVPWM进行了比较分析。With the un-flexible switch sequence design and the severe output voltage harmonic distortion at low switching frequency,normal seven-segment SVPWM isn＇t suitable for the multilevel converters.A three segment SV- PWM is studied for the H/NPC five-level converter, which can avoid the strict switch constraints, is studied to im- prove the output voltage harmonic performance considering low switching losses.Lastly, an experimental platform of the H/NPC converter is used to verify the validity and efficiency of the novel three segment SVPWM as well as the compar-ison between the normal seven segment SVPWM.

关 键 词：变换器 三段式 开关损耗 

分 类 号：TM46[电气工程—电器]