Field-weakening operation of cylindrical permanent-magnet motors

Jingxin Shi*, Yu Sheng Lu

*Corresponding author for this work

Research output: Contribution to conferencePaperpeer-review

29 Citations (Scopus)


For cylindrical permanent-magnet motors in the operation of field-weakening mode, this paper presents the way to develop maximum torque-outputs under the constraints of terminal voltages and armature currents. As compared with the conventional method of constant power operation, this design promotes the available torque-output and fully utilizes the potential of a motor drive, thus reducing the weight and size of a motor drive required to fulfill certain performance specifications. The minimum travelling time to reach a speed command by this design is also formulated so that it can be checked if the hardware capacity of a motor drive is intrinsically enough for specific performance requirement. Besides the promotion of available torque-outputs, another benefit of using this design is to extend the range of reachable speeds, which is important in the applications utilizing mechanical transmissions with high gear ratios.

Original languageEnglish
Number of pages6
Publication statusPublished - 1996
Externally publishedYes
EventProceedings of the 1996 IEEE International Conference on Control Applications - Dearborn, MI, USA
Duration: 1996 Sept 151996 Sept 18


OtherProceedings of the 1996 IEEE International Conference on Control Applications
CityDearborn, MI, USA

ASJC Scopus subject areas

  • Control and Systems Engineering


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