Comparative study of pulsed DC-link voltage converters

This digest presents and classifies the pulse pulsed DC-link voltage (PDCLV) topologies in six types, depending on their ability to synchronize, or not, with external pulse width modulation (PWM) signals and on the shape of the pulsed DC-link voltage waveform. An overview on the control and PWM possibilities for these converters is given and an extensive bibliography is included. Main features are compared for topologies in which the bridge devices commutate under zero-voltage-switching (ZVS) technique. A comprehensive study of principles employed and their importance on generating losses is presented. Although this study focuses mainly on inverters most of these can be easily adapted to be used with AC-to-DC and AC-to-AC converters.