The influence of the continuous conduction mode (CCM) on a switched reluctance drive is analyzed. In contrast to previous publications, this paper focuses on the volt-ampere requirements, the losses and hence the efficiency of the converter of the SRM. Based on an existing drive system, a special configuration with increased number of turns per pole well suited for CCM operation is introduced. With a higher number of turns, the torque/ampere ratio can be increased for low speed with negligible back-EMF. At high speed, the increasing back-EMF and the limited dc-link voltage causes that the converter cannot apply enough current in discontinuous conduction mode (DCM). With CCM the constant power speed range (CPSR) can be extended to fulfill the torque requirements. The influence of a continuous current on the converters volt-ampere requirement as well as the conducting and switching losses and hence the efficiency of the converter are analyzed.
Influence of continuous conduction mode on converters in SRM drives
Einfluß des kontinuierlichen Leitungsmodus auf die Konverter in SRM-Antrieben
2006
10 Seiten, 13 Bilder, 1 Tabelle, 5 Quellen
Aufsatz (Konferenz)
Datenträger
Englisch
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