Robust current control and commutation tuning for an IPMSM drive
ABSTRACT The operating performance improvement of an interior permanent magnet synchronous motor (IPMSM) drive via robust current control and intelligent commutation tuning is studied in this paper. First, the nominal motor parameters are estimated and a robust current control scheme is designed to possess close and robust winding current tracking performance. It is known that the torque generating capability of an IPMSM is affected by the changes of commutation instant and field excitation. The proof is given to show that the latter can be equivalently achieved by tuning the commutation instant, and the effects of these two variations on the IPMSM drive performances under speed open-loop and closed-loop conditions are observed analytically and experimentally. Then accordingly, an intelligent tuning approach is developed to automatically determine the advance of commutation instant. The minimum current command is achieved to obtain better torque generating capability equivalently. A DSP-based IPMSM drive is established and the effectiveness of the proposed control approaches is demonstrated experimentally.
Conference Proceeding: The performance comparison of SPMSM, IPMSM and SynRM in use as air-conditioning compressor[show abstract] [hide abstract]
ABSTRACT: This paper reports results on the performance comparison of highly-efficient reluctance motors, in which performance was compared in use as an air-conditioning compressor. The compared motors were a SynRM (synchronous reluctance motor), SPMSM (surface permanent magnet synchronous motor), IPMSM (interior permanent magnet synchronous motor) and a conventional IM (induction motor). It was found that the IPMSM was superior in terms of efficiency, and SynRM was the lowest cost. Its efficiency was also higher than the typical IMIndustry Applications Conference, 1999. Thirty-Fourth IAS Annual Meeting. Conference Record of the 1999 IEEE; 02/1999
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ABSTRACT: An intelligent sensorless control strategy for a brushless DC motor (BDCM) is presented. The rotor position for making commutation is first roughly estimated by a proposed switching signal generation scheme using motor terminal voltages. Then an intelligent self-tuning strategy is developed to finely adjust the commutation instant for obtaining optimal torque generating capability. This is achieved by a simple but stable self-tuning algorithm to minimise winding currents at any instant. The effect of commutation instant on the BDCM operation capability is observed analytically and intuitively, and, accordingly, the proposed self-tuning strategy is established. The effectiveness of the proposed method is demonstrated experimentallyIEE Proceedings - Electric Power Applications 12/1999; · 0.55 Impact Factor
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ABSTRACT: A current vector control method is described for permanent magnet synchronous motors for high torque and high efficiency operations. In this method, the current phase angle is controlled according to load conditions in order to use the reluctance torque effectively. Several characteristics, such as torque, efficiency, power capability, and so on, are greatly improved by this control method. The performance characteristics are greatly affected by the motor parameters which depend on the rotor configurations and permanent magnet geometries. The available maximum torque and power capability are also examined.< >Industry Applications Society Annual Meeting, 1991., Conference Record of the 1991 IEEE; 11/1991