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A Novel Power Factor Corrected Isolated Cuk Converter Fed Switched Reluctance Motor Drive

The Switched reluctance motor has received greater attention nowadays due to its simple structure, low cost and high operating speeds. This paper proposes a novel motor drive for Switched Reluctance motor (SRM). An asymmetric bridge converter is popularly used to drive an SRM from a dc supply. However, when a single phase full bridge rectifier is used to generate the adequate dc link voltage, supply power factor becomes very low. Hence an Isolated cuk converter-based power factor correction stage is used in this paper. It also provides galvanic isolation and improved power quality during the entire operating range. A simple hysterisis controller is used in the inner current control loop of the asymmetric bridge converter and an outer PI controller is used for tracking the reference speed. A MATLAB/Simulink model of the drive was developed and simulations were carried out for different operating conditions. The total harmonic distortion of the input ac current was measured and found to be within acceptable limits.