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This paper presents a parallel resonant converter for high input voltage applications. In order to reduce the voltage stress of active switches, two half-bridge converters are connected in series at high voltage side. Flying capacitor is adopted between two series half-bridge converters to automatically balance two input capacitor voltages. Pulse frequency modulation scheme is adopted to regulate...
A new type of Class E rectifier that can regulate the output voltage or power is proposed. The proposed rectifier is composed of a conventional Class E zero-voltage-switching rectifier and the controlled shunt capacitor whose capacitance is variable according to the state of the active switches. With turning the active switches ON or OFF, the shunt capacitance of the rectifier can be changed, which...
This paper presents the experimental characterization of four different types of 4.5 kV, 91 mm asymmetric IGCTs under zero-voltage switching. On-state and turn-off tests at ratings up to 2.8 kV/3.3 kA with several resonant snubber capacitances and different junction temperatures have been performed to obtain experimental data. For converter loss modeling, e.g. dc-to-dc converters for offshore windfarms,...
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