Power electronic device temperature estimation and control in pulsed power and converter applications

被引：28

作者：

Musallarn, Mahera ^{[2
]}

Acarnley, Paul P. ^{[1
]}

Johnson, C. Mark ^{[2
]}

Pritchard, Len ^{[1
]}

Pickert, Volker ^{[1
]}

机构：

[1] Univ Newcastle, Sch EECE, Power Elect Drives & Mach Grp, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England

[2] Univ Nottingham, Dept Elect & Elect Engn, Nottingham NG7 2RD, England

来源：

CONTROL ENGINEERING PRACTICE | 2008年 / 16卷 / 12期

基金：

英国工程与自然科学研究理事会;

关键词：

Power electronics; Temperature; Modelling; Estimation;

D O I：

10.1016/j.conengprac.2008.04.001

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 [计算机科学与技术];

摘要：

Reliable functioning of a power electronic switching device is limited not only by the instantaneous device junction temperature but also by its variation. A technique for reducing the device temperature variation is described. A simplified mathematical model of the thermal process in the device is evaluated in real time to estimate the instantaneous device temperature. A temperature control loop adjusts the device switching losses to compensate changes in conduction loss, thus keeping the total losses, and hence the temperature, substantially constant. This principle is applied to a pulsed power supply and to a PWM converter operating at a very-low-frequency (0.1 Hz) output power modulation. The amplitude of device temperature variations is reduced by at least 50%. (c) 2008 Elsevier Ltd. All rights reserved.

引用

页码：1438 / 1442

页数：5

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