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AC-DC three-phase rectifiers that can operate with input power factor correction are either boost-type converters or buck-type converters that are typically implemented using six converter switches. In this paper, alternative rectifier topologies that use fewer converter switches are reviewed. The features of each topology are discussed and the topology's advantages and disadvantages are stated. A...
A new ac-dc single stage voltage-fed PWM full-bridge converter is proposed in the paper. The converter can simultaneously perform input power factor correction and dc-dc conversion using conventional phase-shift PWM and can maintain a primary side dc bus voltage of less than 450 V even at a high input line voltage of 265 V. The proposed converter has these features due to the novel implementation...
The properties and characteristics of voltage-fed AC-DC single-stage PWM converters are reviewed in this paper. This is done with respect to the primary-side DC bus voltage, which is a critical parameter in these types of converters. The operation of two single-stage converters - a forward converter and a full-bridge converter - is examined in detail. Observations and conclusions are made on the basis...
A simple AC-DC PWM converter that can perform isolated DC-DC conversion while shaping the input current to improve power factor is proposed in this paper. The converter is almost the same as a standard PWM full-bridge converter with a diode rectifier/LC low-pass filter input except for some slight modifications. The converter topology is therefore very simple, as is the method of control used to achieve...
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