Analysis of PWM Frequency Control to Improve the Lifetime of PWM Inverter

被引：0

作者：

Wei, Lixiang ^{[1
]}

Mcguire, Jeffrey ^{[1
]}

Lukaszewski, Richard A. ^{[1
]}

机构：

[1] Rockwell Automat Allen Bradley, Mequon, WI 53092 USA

来源：

2009 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION, VOLS 1-6 | 2009年

关键词：

Power cycling capability; adjustable speed drive; MTTF; Delta T-j control;

D O I：

暂无

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Studies have shown that the power cycling Mean Time to Failure (MTTF) of the IGBT bond wire in an adjustable speed drive (ASD) may be very short under some very common conditions. This paper proposes a switching frequency reduction method based on junction temperature variation (Delta Tj) of the inverter IGBT. It has the following advantages. Firstly, it only reduces the PWM frequency under low speed higher torque condition; secondly, the inverter can be started more smoothly and safely under higher command switching frequency and high torque condition. Thirdly, the overall MTTF of the inverter IGBT can be improved dramatically. Theory analysis, simulation and experimental result will be provided to show these advantages.

引用

页码：408 / 415

页数：8

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