Evaluation of Power Losses in a Boost PFC Unit by Temperature Measurements

Author

Viswanathan, Kanakasabai ; Oruganti, Ramesh

Author_Institution

Nat. Univ. of Singapore, Singapore

Volume

43

Issue

5

fYear

2007

Firstpage

1320

Lastpage

1328

Abstract

High power conversion efficiency is an important requirement of the front-end power-factor-corrected (PFC) boost rectifier that is used in shaping the ac input current in a typical modern switch-mode power supply. A reasonably accurate estimate of the power losses in individual components is essential in order to improve the efficiency of the PFC rectifier. In this paper, difficulties in the measurement of individual component power losses with particular reference to an ac-dc converter are brought out. A method of loss evaluation by measurement of temperatures of individual components and surrounding ambient is presented. Experimental results that are carried out on the front-end boost PFC rectifier of a commercial ac-dc converter are presented to validate the loss estimation method.

Keywords

AC-DC power convertors; PWM power convertors; loss measurement; power factor correction; rectifying circuits; switched mode power supplies; temperature measurement; ac-dc converter; boost PFC unit; front end boost PFC rectifier; front end power factor corrected boost rectifier; high power conversion efficiency; power losses; switch mode power supply; temperature measurements; Loss measurement; Particle measurements; Power electronics; Power measurement; Power supplies; Pulse measurements; Pulsed power supplies; Rectifiers; Temperature measurement; Voltage; Loss measurement; power factor; pulsewidth-modulated power converters; rectifiers; switch-mode power supplies;

fLanguage

English

Journal_Title

Industry Applications, IEEE Transactions on

Publisher

ieee

ISSN

0093-9994

Type

jour

DOI

10.1109/TIA.2007.904431

Filename

4305337