Single Switch PWM Converter Fed PMDC Drive

Abstract: The main focus is on new power converter topologies that convert a three phase AC input voltage into an isolated DC output voltage with a reduced number of switches for speed controlling PMDC motor. In the thesis, a new family of reduced switch front-end converter topologies is proposed, an example converter from this new family is selected for further study and a modified version of this topology is studied as well. The properties and characteristics of three-phase AC-DC single-switch converter is analyzed using MATLAB/simulink software. For each new converter that is investigated in detail, its modes of operation are explained, its steady-state characteristics are determined.

Keywords: Single Switch AC-DC Conversion, PMDC Motor.