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DSP-based implementation of new random switching technique of inverter control for sensorless vector-controlled induction motor drives

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2 Author(s)
Lai, Y.S. ; Dept. of Electr. Eng., Nat. Taipei Univ. of Technol., Taipei, Taiwan ; Chang, S.C.

The DSP-based implementation of a new random switching technique of inverter control for sensorless vector-controlled induction motor drives is presented. All the necessary software schemes required for the implementation of the new random switching technique of inverter control for vector-controlled induction motor drives are developed in detail. The advantages and special features of the new random switching technique are highlighted and demonstrated. It is shown how simply the control system, including the inverter controller based upon the new random switching technique, and the sensorless vector controller, can be implemented by an off-the-shelf digital signal processor (DSP) starter kit using software, without resorting to additional analogue circuits or a dedicated inverter control chip. It is thereby demonstrated that the new random switching technique of inverter control can be easily incorporated into existing vector-controlled motor drive systems. Experimental results from a DSP-based sensorless vector-controlled drive system are presented to confirm the theoretical analysis, software and hardware design

Published in:

Electric Power Applications, IEE Proceedings -  (Volume:146 ,  Issue: 2 )