The Influence of the C-Dump Converter on the Parameters of a Mains-Supplied Three-Phase SRM Drive

Krzysztof Tomczewski, Krzysztof Wróbel () and Daniel Rataj
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Krzysztof Tomczewski: Faculty of Electrical Engineering, Automatic Control and Computer Science, Opole University of Technology, 45-758 Opole, Poland
Krzysztof Wróbel: Faculty of Electrical Engineering, Automatic Control and Computer Science, Opole University of Technology, 45-758 Opole, Poland
Daniel Rataj: Faculty of Electrical Engineering, Automatic Control and Computer Science, Opole University of Technology, 45-758 Opole, Poland

Energies, 2025, vol. 18, issue 20, 1-21

Abstract: 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.

Keywords: switched reluctance motor; SRM; switched reluctance drive; electric drive; C-dump converter; converter topology (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2025
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