Optimization of switching frequencies in the limited-pool random space vector PWM technique for inverter-fed drives

Author

Trzynadowski, A.M. ; Bech, Michael M. ; Blaabjerg, Frede ; Pedersen, John K. ; Kirlin, R. Lynn ; Zigliotto, Mauro

Author_Institution

Dept. of Electr. Eng., Nevada Univ., Reno, NV, USA

Volume

2

fYear

1999

fDate

14-18 Mar 1999

Firstpage

1013

Abstract

A space vector PWM technique for inverter fed AC drives which, in contrast with known random modulation methods, is characterized by a very small pool of randomly used switching frequencies, is presented. The limited size of the pool facilitates design of digitally implemented linear current control schemes, in which the controller settings depend on the length of sampling interval. A method for optimal selection of pool frequencies is described and validated by experimental evidence, including EMI measurements

Keywords

AC motor drives; PWM invertors; digital control; electric current control; switching circuits; EMI measurements; controller settings; digitally implemented linear current control; inverter-fed AC drives; limited-pool random space vector PWM; random modulation methods; randomly used switching frequencies; sampling interval length; switching frequencies optimisation; Current control; Drives; Electromagnetic interference; Pulse inverters; Pulse width modulation converters; Pulse width modulation inverters; Sampling methods; Space vector pulse width modulation; Switching frequency; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Power Electronics Conference and Exposition, 1999. APEC '99. Fourteenth Annual

Conference_Location

Dallas, TX

Print_ISBN

0-7803-5160-6

Type

conf

DOI

10.1109/APEC.1999.750493

Filename

750493