Power and power spectral density in PWM inverters with randomized switching frequency

Author

Kirlin, R. Lynn ; Bech, Michael M. ; Trzynadlowski, Andrzej M. ; Huo, Bin

Author_Institution

Dept. of Electr. & Comput. Eng., Victoria Univ., BC, Canada

Volume

1

fYear

2001

fDate

6/23/1905 12:00:00 AM

Firstpage

188

Abstract

Theoretical and experimental investigation of the impact of randomization of switching frequency in pulse width modulated (PWM) three-phase inverters on the spectra of output voltage is presented. The case of random PWM with a limited set of employed values of switching frequency is analyzed with respect to both the power and power density spectral components. A novel method for accurate prediction of spectra of inverter voltage is introduced and experimentally verified. Experiments were also used to illustrate the important issue of required width of the range of switching frequencies

Keywords

DC-AC power convertors; PWM invertors; harmonic distortion; power conversion harmonics; power supply quality; random processes; switching circuits; output voltage spectra; power density spectral components; random PWM; switching frequency; switching frequency randomization; three-phase PWM inverters; Power engineering and energy; Power engineering computing; Pulse inverters; Pulse width modulation; Pulse width modulation inverters; Pulsed power supplies; Sampling methods; Space vector pulse width modulation; Switching frequency; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Specialists Conference, 2001. PESC. 2001 IEEE 32nd Annual

Conference_Location

Vancouver, BC

ISSN

0275-9306

Print_ISBN

0-7803-7067-8

Type

conf

DOI

10.1109/PESC.2001.954017

Filename

954017