Experimental analysis reveals improved output power and speed in three-phase SRM drives, indicating C-dump converter advantages.
This paper presents the results of the research of a drive with a three-phase switched reluctance motor (SRM) with a C-dump converter, supplied from a mains rectifier. Using the tested C-dump converter for a three-phase mains-powered SRM, a significant increase in output power and speed range was achieved, with a limited capacitor charging voltage close to the source supply voltage, compared to a drive with a converter based on asymmetric half-bridges. Previous studies have only included a battery-powered drive with a two-phase motor with a capacitor charging voltage many times higher than the source voltage. The converter is designed for drives that do not require braking with energy recovery, such as fans and pumps. The mathematical model of the drive is discussed and the simulation results are presented. Experimental tests of the drive were carried out to verify the simulation results. The characteristics of the tested drive were compared with the characteristics of the drive with a typical power supply system.
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Tomczewski et al. (2025) studied this question.
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