An isolated AC-DC converter has been used in various applications, such as power supply and as a battery charger for electric vehicle. In conventional converters, a loss in each conversion stage can be reduced by applying a soft switching method.
However, a conventional converter has many conversion stages including the rectifier stage, power factor correction, DC/DC converter stages; thus, it is difficult to reduce the total converter loss and size.
In this paper, we propose a novel isolated-type AC-DC converter with only one conversion stage; it can realize a zero voltage switching operation in all switching devices.
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