Minimum-loss strategy for three-phase PWM rectifier
Dae-Woong Chung
Seung-Ki Sul
Power Electron. Lab., Seoul Nat. Univ.;
This paper appears in: Industrial Electronics, IEEE Transactions on
Publication Date: Jun 1999
Volume: 46,
Issue: 3
On page(s): 517-526
ISSN: 0278-0046
References Cited: 13
CODEN: ITIED6
INSPEC Accession Number: 6277324
Digital Object Identifier: 10.1109/41.767058
Current Version Published: 2002-08-06
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
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