A novel solid-state control system for the minimization of re-switching transient currents of induction motor. | [Mehran University Research Journal of Engineering and Technology • 2005]

Author(s):

1. Mohammad Rafique Abro: Department of Electronic, Engineering, Mehran University of Engineering & Technology, Jamshoro, Pakistan

2. Abdul Sattar Larik: Department of Electronic, Engineering, Mehran University of Engineering & Technology, Jamshoro, Pakistan

3. Mukhtiar Ahmed Mahar: Department of Electronic, Engineering, Mehran University of Engineering & Technology, Jamshoro, Pakistan

Abstract:

This work is an investigation into the possibility of minimizing re-closure transient currents of induction motors by activating NOVEL solid state control system switching at a matched condition. This emphasis is placed upon open-circuit transition starting of cage motors, particularly star-delta switching. The initial study is carried out on single-phase induction motor. This system is capable of effective sensing re-closure of a switched off running single-phase induction motor. Further this scheme could be developed to give sequential delta closure of a switched off running three-phase induction motor during 1st cycles following the opening of the star mode. Consideration is also given to the possibility of using sensed re-closure to minimize transients whenever the supply to a running induction motor is briefly interrupted, irrespective of whether the interruption is by accident or design. A brief study is made into the type of transient currents generated by opening the circuit of a running induction motor. The importance of the switching pattern for star delta starting is explained and emphasized.

Page(s): 351-358

DOI: DOI not available

Published: Journal: Mehran University Research Journal of Engineering and Technology, Volume: 24, Issue: 4, Year: 2005

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