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2024-09-23
A Novel Direct Instantaneous Torque Control Strategy of Permanent Magnet-Assisted Switched Reluctance Motor with Zero Voltage Modulation
By
Progress In Electromagnetics Research C, Vol. 148, 71-82, 2024
Abstract
To reduce large torque ripple in permanent magnet-assisted switched reluctance motors (PMa-SRMs), a novel direct instantaneous torque control (DITC) strategy with zero-voltage modulation is proposed in this paper, where a fixed-frequency pulse width modulation (PWM) is replaced by the conventional DITC hysteresis controller to optimize zero-voltage insertion time through zero-voltage decentralized modulation to minimize switching losses. Control intervals are then divided based on inductance and torque-to-current ratio (TCR) characteristics, with adaptive duty cycle adjustments to enhance torque tracking and reduce ripple. Additionally, the optimal turn-on and turn-off angles are determined by the dung-beetle-optimized back propagation (BP) neural network (DBO-BP) algorithm, which suppresses the torque ripple, lowers phase current peaks, and improves motor efficiency. The feasibility and effectiveness of the proposed method are validated by simulations and experiments with a three-phase 6/20 PMa-SRM.
Citation
Chaozhi Huang, Renquan Xiao, Chengyi Gong, and Yong Xiao, "A Novel Direct Instantaneous Torque Control Strategy of Permanent Magnet-Assisted Switched Reluctance Motor with Zero Voltage Modulation," Progress In Electromagnetics Research C, Vol. 148, 71-82, 2024.
doi:10.2528/PIERC24062801
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