Abstract
This paper presents a three-phase full-bridge boost switch-mode rectifier (SMR) powered switched-reluctance motor (SRM) drive with battery energy storage buffer. It covers the designing of the power circuits and control schemes for the two power stages. Except for having a superior line-drawn power quality, the boost-able DC-link voltage of the SRM drive can enhance the SRM driving performance in a wide speed range and sent back the recovered regenerative braking energy to the grid successfully. The next is establishing a battery energy storage system (BESS) with a bidirectional interface DC-DC converter connected to the motor drive DC-link for providing an energy buffer. The proposed parallel operation strategy has three possible inter-connected operations. (i) Grid-to-battery (G2B) charging: The battery charged by the grid with a good line drawn power quality. (ii) B2G discharging operation: The battery sending power back to the grid by the interface converter and the SMR. (iii) Battery buffer operation: Powering of the SRM drive simultaneously by the utility grid and the battery with the proposed parallel operation strategy.
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