A PWM Scheme for a Five-Phase VSI Supplying a Five-Phase Two-Motor Drive

Author

Iqbal, Atif ; Levi, Emil ; Jones, Martin ; Vukosavic, Slobodan N.

Author_Institution

Sch. of Eng., Liverpool John Moores Univ.

fYear

2006

fDate

6-10 Nov. 2006

Firstpage

2575

Lastpage

2580

Abstract

Application of power electronics in electric drives enables utilisation of AC machines with a phase number higher than three. Such multi-phase motor drives are nowadays considered for various applications. Multi-phase drives are invariably supplied from multi-phase voltage source inverters (VSIs) and adequate methods for VSI pulse width modulation (PWM) are therefore required. This paper deals with carrier-based PWM, where offset injection enables an improvement in the DC bus utilisation without moving into the over-modulation region, while still providing sinusoidal output phase voltages. An appropriate carrier-based PWM scheme with offset injection is developed for a five-phase VSI supplying two series-connected five-phase machines. The simulation results shown in the paper prove the viability the proposed PWM scheme. Experimental results, illustrating application of the carrier-based PWM in series-connected five-phase two-motor drives, are also included

Keywords

PWM invertors; motor drives; AC machines; carrier-based PWM scheme; five-phase VSI supply; five-phase two-motor drives; multiphase voltage source inverters; power electronics; pulse width modulation; AC machines; Current control; Machine vector control; Power engineering and energy; Pulse width modulation; Pulse width modulation inverters; Space vector pulse width modulation; Stator windings; Torque; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

IEEE Industrial Electronics, IECON 2006 - 32nd Annual Conference on

Conference_Location

Paris

ISSN

1553-572X

Print_ISBN

1-4244-0390-1

Type

conf

DOI

10.1109/IECON.2006.347591

Filename

4152831