A Novel Speed-Sensorless Wireless Universal Motor with Bidirectional Movement

Hui Wang, K. T. Chau, Wei Liu, Songtao Li, Stefan M. Goetz

Research output: Journal article publicationJournal articleAcademic researchpeer-review


This article proposes a novel wireless universal motor. By eliminating the motor controller and position sensor, the secondary side is very simple and robust. Besides, bidirectional movement can be achieved. The key is to employ a self-driving circuit at the secondary side. Also, the advantages of the small size and large starting torque of universal motors can be retained. Hence, the proposed wireless universal motor is very suitable to be sealed and employed in isolated environments, such as pipeline pigging. A series of simulations and experiments have been conducted, which confirms that the secondary side can be self-driven, and the motor speed can be detected at the primary side.

Original languageEnglish
Article number8202105
JournalIEEE Transactions on Magnetics
Issue number11
Publication statusPublished - 1 Nov 2023
Externally publishedYes


  • Bidirectional movement
  • secondary controller-less
  • speed-sensorless
  • universal motor
  • wireless power transfer (WPT)

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering


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