Abstract
Modified single-pulse mode is known to reduce the output current ripple of a switched reluctance generator (SRG) compared to single-pulse mode. This paper presents a novel mathematical model of SRG operating under modified single-pulse mode. The model inputs are DC-link voltage, prime-mover speed, low-current inductance profile, and three switching angles of the power converter. The phase current, DC bus current contributed by each phase, and the average output current of an SRG system are expressed as analytical function of model inputs. The model can be utilized for performance prediction and control of modified single-pulse-operated SRG. The phase current, DC bus contributed by each phase, and the average output current obtained using the proposed model are all validated through simulations and experiments. Further, using the proposed model, the DC-link voltage dynamics of SRG for constant-resistance, constant-current, and constant-power loads are predicted and validated through simulations and experiments on a 4-kW 1500-rom SRG.
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