New single-switch three-phase high power factor rectifiers using multi-resonant zero current switching

New single-switch three-phase high power factor rectifiers are introduced which have continuous input and output currents. By the use of a multi-resonant scheme, the transistor operates with zero current switching and the diodes operate with zero voltage switching. These multi-resonant rectifiers with a single transistor are capable of drawing a higher quality input current waveform at nearly unity power factor and lower stress than the quasi-resonant rectifiers. Buck-type converters are used for the power stage, and hence the output voltage is lower than the input voltage. Moreover, these rectifiers have a wide load range and low stress on semiconductor devices. Simulation and experimental results are presented