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Fuzzy-logic-controller-based cost-effective four-switch three-phase inverter-fed IPM synchronous motor drive system

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3 Author(s)
M. N. Uddin ; Dept. of Electr. Eng., Lakehead Univ., Thunder Bay, Ont., Canada ; T. S. Radwan ; M. A. Rahman

This paper investigates the performance of a fuzzy-logic-controller (FLC)-based cost-effective drive system of interior permanent-magnet synchronous motor (IPMSM) for high-performance industrial applications. In this paper, the FLC is used as a speed controller and the motor is fed from a four-switch three-phase (4S3Ph) pulsewidth-modulation (PWM) inverter instead of a conventional six-switch three-phase (6S3Ph) inverter. This reduces the cost of the inverter, the switching losses, and the complexity of the control algorithms and interface circuits to generate six PWM logic signals. Furthermore, the proposed control approach reduces the computation for real-time implementation. The closed-loop vector control scheme of the proposed 4S3Ph-inverter-fed IPMSM drive incorporating the FLC is implemented in real time using the digital signal processor (DSP) TI TMS320C31 for a prototype 1-hp motor. The robustness of the proposed FLC-based 4S3Ph-inverter-fed IPMSM drive is verified by theoretical and experimental results at different operating conditions. A comparison of the proposed 4S3Ph-inverter-fed IPM drive with a conventional 6S3Ph inverter system is also made in terms of performance and harmonic analysis of the stator current. The proposed inverter-fed IPMSM drive is found quite acceptable considering its performance, cost reduction, and other inherent advantageous features.

Published in:

IEEE Transactions on Industry Applications  (Volume:42 ,  Issue: 1 )