Title: Space vector PWM for three phase nine-switch AC-AC converter

Authors: Seka Malek

Addresses: Division of Electrical Power, School of Electrical and Computer Engineering, National Technical University of Athens, Heroon Polytechneiou Street, GR-157 80 Athens, Greece

Abstract: This paper presents a new three-phase nine-switch AC-AC converter topology. The proposed converter grants sinusoidal inputs and sinusoidal outputs, unity input power factor, and low manufacturing cost, as a consequence of its reduced number of active switches (IGBTs) from 12 to 9 switches. The operating principle of the proposed converter was explained in detail. Its modulation scheme by using space vector modulation (SVM) technique is discussed. The total harmonic distortion (THD) of the rectifier side and inverter side are compared. Semiconductor loss analysis and comparison with the back-to-back two-level voltage source converter are presented. The proposed converter results signified the positive merits of this converter.

Keywords: three-phase nine switch converters; AC-AC converters; space vector PWM; pulse width modulation; total harmonic distortion; THD; rectifier side; inverter side; semiconductor loss analysis.

DOI: 10.1504/IJIED.2014.066205

International Journal of Industrial Electronics and Drives, 2014 Vol.1 No.4, pp.203 - 211

Received: 18 Dec 2013
Accepted: 23 Mar 2014
Published online: 20 Dec 2014 *

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