Minimum-loss strategy for three-phase PWM rectifier

Author

Chung, Dae-Woong ; Sul, Seung-Ki

Author_Institution

Power Electron. Lab., Seoul Nat. Univ., South Korea

Volume

46

Issue

3

fYear

1999

fDate

6/1/1999 12:00:00 AM

Firstpage

517

Lastpage

526

Abstract

In this paper, the conduction and switching losses of a voltage-fed three-phase pulsewidth modulation (PWM) rectifier are analyzed for various PWM schemes. On the basis of this result, a novel PWM strategy which minimizes the loss of a three-phase PWM rectifier is developed. This minimization result is derived from the following two factors: (1) less switching frequency ratio; and (2) the absence of switching in the vicinity of peak input current. As a result, it is anticipated that the switching loss of the rectifier is reduced by 46%, compared with continuous space-vector PWM rectifiers, and 20% compared with conventional discontinuous space-vector PWM rectifiers. Moreover, the proposed PWM scheme can produce the highest available output voltage because it is based on the concept of the voltage space vector. The effectiveness of the proposed PWM strategy is verified by experiments

Keywords

AC-DC power convertors; PWM power convertors; losses; rectifying circuits; switching circuits; conduction losses; minimum-loss strategy; output voltage; peak input current; switching frequency ratio; switching losses; three-phase PWM rectifier; voltage space vector; Bidirectional power flow; Harmonic analysis; Helium; Pulse width modulation; Pulse width modulation inverters; Rectifiers; Space vector pulse width modulation; Switching frequency; Switching loss; Voltage control;

fLanguage

English

Journal_Title

Industrial Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0278-0046

Type

jour

DOI

10.1109/41.767058

Filename

767058