Analysis of frequency inverter loss under 3 different PWM modulation methods

Author

Dengshan Hou ; Cungang Hu ; Guoli Li ; Fenfang Zhu

Author_Institution

Sch. of Electr. Eng. & Autom., Hefei Univ. of Technol., Hefei, China

fYear

2014

fDate

3-5 Dec. 2014

Firstpage

18

Lastpage

21

Abstract

According to different modulation methods, there are 3 different kinds of SPWM modulations. To different SPWM modulation methods, due to the distinction of switch frequency and current harmonic, power frequency inverter loss is also different. Based on the analysis of SPWM modulations, losses of an inverter bridge have been compared. Depend on the establishment of MATLAB simulations, harmonic parameters of transformer are obtained, and the transformer losses are analyzed. Through experiments on a 500W power frequency inverter, practical efficiency of 3 kinds of SPWM modulation methods is obtained, and corresponding conclusions are verified.

Keywords

PWM invertors; bridge circuits; power transformers; SPWM modulation; current harmonic; power 500 W; power frequency inverter loss analysis; pulse width modulation; switch frequency; transformer harmonic parameter; transformer loss; Analytical models; Frequency measurement; Frequency modulation; MATLAB; Mathematical model; Pulse width modulation; PWM modulation; inverter loss; transformer loss;

fLanguage

English

Publisher

ieee

Conference_Titel

Modelling, Identification & Control (ICMIC), 2014 Proceedings of the 6th International Conference on

Conference_Location

Melbourne, VIC

Type

conf

DOI

10.1109/ICMIC.2014.7020720

Filename

7020720