Power Optimal Current Control Scheme for Bearingless PM Motors

Wolfgang Amrhein, Siegfried Silber

Research output: Chapter in Book/Report/Conference proceedingConference proceedingspeer-review

Abstract

Bearingless motors offer new possibilities in drive technology and open up new design approaches to applications where conventional bearings can hardly be employed. However, especially for low power applications a very cost-effective and highly efficient motor design is desirable. In this paper a current control scheme is presented that ensures operation of the bearingless motor with minimized resistive power losses. Moreover, for motor designs where all the winging systems are used both for radial force and torque generation this control scheme may also ensure production of arbitrary radial forces and torque even if the sum of the phase currents is equal to zero. As a result, star connection of the motor phases is possible and hence the number of required power switches for driving the motor can be reduced.
Original languageEnglish
Title of host publication7th International Symposium on Magnetic Bearings (ISMB)
Pages401-406
Number of pages6
Publication statusPublished - Aug 2000

Fields of science

  • 202 Electrical Engineering, Electronics, Information Engineering
  • 202009 Electrical drive engineering
  • 202011 Electrical machines
  • 202025 Power electronics
  • 202027 Mechatronics

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