Evaluation of power losses in a boost PFC unit by temperature measurements

Author

Viswanathan, K. ; Oruganti, R.

Author_Institution

Centre for Power Electron., Singapore Nat. Univ.

fYear

2006

Abstract

High power conversion efficiency is an important requirement of the front-end power-factor corrected (PFC) boost rectifier used in shaping the ac input current in a typical modern off-line 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 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; losses; power factor correction; rectifiers; ac-dc converter; boost PFC unit; loss estimation method; off-line power supply; power conversion efficiency; power factor corrected boost rectifier; power losses; temperature measurements; AC-DC power converters; Bandwidth; Loss measurement; MOSFET circuits; Measurement units; Oscilloscopes; Power measurement; Probes; Temperature measurement; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Power Electronics Conference and Exposition, 2006. APEC '06. Twenty-First Annual IEEE

Conference_Location

Dallas, TX

Print_ISBN

0-7803-9547-6

Type

conf

DOI

10.1109/APEC.2006.1620546

Filename

1620546