Sinusoidal current rectification and ripple cancellation in a very wide three phase AC input to generate a regulated DC output

This paper represents a three-phase ac to dc rectifier topology that produces a regulated dc output voltage with low input current distortion. The novelty of this paper lies in the circuit which not only operates over a wide range of input voltages but also provides ripple cancellation in the rectifier current. Moreover, this converter utilizes the principle of third harmonic current generation and circulation through a zig-zag transformer in order to achieve power factor correction in the line current. Since simulation is a way to investigate the concept prior to any hardware realization, PSpice-based simulation has been carried out. Simulation results are presented that prove the concept.