A new configuration of single-phase symmetrical PWM AC choppervoltage controller
Ahmed, N.A.
Amei, K.
Sakui, M.
Dept. of Electr. & Electron., Toyama Univ. ;
This paper appears in: Industrial Electronics, IEEE Transactions on
Publication Date: Oct 1999
Volume: 46,
Issue: 5
On page(s): 942-952
ISSN: 0278-0046
References Cited: 18
CODEN: ITIED6
INSPEC Accession Number: 6383636
Digital Object Identifier: 10.1109/41.793343
Current Version Published: 2002-08-06
Abstract
With the increased availability of power MOSFETs and insulated
gate bipolar transistors, a new generation of simple choppers for AC
inductive loads is foreseen. These new power semiconductors ease the use
of forced commutations of thyristor switches to improve the supply power
factor, even with highly inductive loads. The AC controllers with
thyristor technology can be replaced by pulsewidth modulation (PWM) AC
chopper controllers which have important advantages. In this paper, a
symmetrical PWM AC chopper designed to operate with single-phase
inductive loads with a reduced number of controlled switches is
described. The operation as a variable voltage source of this converter
is evaluated. This includes the conversion characteristics, harmonic
generation, harmonic distortion factor, and input power factor. By
digital simulation, these characteristics are investigated
theoretically, and to correlate the measurements with theory, an
experimental setup is presented to confirm the analytical analysis
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