A General PWM Strategy for Four-Switch Three-Phase Inverters

Author

De Rossiter Corrêa, Maurício Beltrão ; Jacobina, Cursino Brandão ; Da Silva, Edison Roberto Cabral ; Lima, Antonio Marcus Nogueira

Author_Institution

Dept. de Engenharia Eletrica, Univ. Fed. de Campina Grande

Volume

21

Issue

6

fYear

2006

Firstpage

1618

Lastpage

1627

Abstract

A general pulsewidth modulation (PWM) method for control of four-switch three-phase inverters is presented. The proposed vector PWM offers a simple method to select three or four vectors that effectively synthesize the desired output voltage, even in presence of voltage oscillations across the two dc-link capacitors. The method utilizes the so called space vector modulation, and includes its scalar version. Different vector combinations are compared. The effect of Wye and delta motor winding connections over the pulse width modulator is also considered. The common mode voltage generated by the four-switch three-phase converter is evaluated and compared to that provided by the standard six-switch three-phase inverter. Simulation and experimental results are presented to demonstrate the feasibility of the proposed approach

Keywords

PWM invertors; capacitors; oscillations; dc-link capacitors; delta motor winding connection; four-switch three-phase inverters; general PWM strategy; pulsewidth modulation; space vector modulation; voltage oscillations; wye motor winding connection; Capacitors; Induction motors; Jacobian matrices; Leg; Pulse inverters; Pulse width modulation; Pulse width modulation inverters; Space vector pulse width modulation; Switches; Voltage; Common mode voltage; four-switch three-phase inverter; vector and scalar pulsewidth modulation (PWM);

fLanguage

English

Journal_Title

Power Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0885-8993

Type

jour

DOI

10.1109/TPEL.2006.882964

Filename

4012134