Starting and running the induction motor with a variable capacitor

Andreas Michaelides, Thanos Nicolaou

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Single phase induction motors employ during the startup a capacitor that is connected to the auxiliary winding in order to create a rotating magnetic field and consequently the necessary starting torque. When the motor has acquired during the starting phase about 75% of its nominal rotational speed, fast enough just for the main winding to maintain the torque, a centrifugal switch disconnects the auxiliary winding and capacitor from the supply. This paper examines the possibility to use instead of the fixed capacitor and the centrifugal switch a variable capacitor whose impedance can be controlled by electronics and digital processing with respect to the necessary starting and adequate steady state torque with further prospects of optimal working point regulation.

Original languageEnglish
Title of host publication2017 14th International Conference on Engineering of Modern Electric Systems, EMES 2017
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages87-90
Number of pages4
ISBN (Electronic)9781509060733
DOIs
Publication statusPublished - 13 Jul 2017
Event14th International Conference on Engineering of Modern Electric Systems, EMES 2017 - Oradea
Duration: 1 Jun 20172 Jun 2017

Other

Other14th International Conference on Engineering of Modern Electric Systems, EMES 2017
CityOradea
Period1/06/172/06/17

Keywords

  • controllable working point
  • Induction motor startup
  • variable reactance
  • wound aluminum foils

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  • Cite this

    Michaelides, A., & Nicolaou, T. (2017). Starting and running the induction motor with a variable capacitor. In 2017 14th International Conference on Engineering of Modern Electric Systems, EMES 2017 (pp. 87-90). [7980388] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/EMES.2017.7980388