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Characteristics Analysis of Flux-Reversal Machine considering BEMF Current  

Kim Tae Heoung (한양대 전기공학과)
Lee Ju (한양대 전기공학과)
Publication Information
The Transactions of the Korean Institute of Electrical Engineers B / v.53, no.12, 2004 , pp. 709-717 More about this Journal
Abstract
Flux-reversal machine (FRM) is a new brushless doubly salient permanent magnet machine. Its operation is similar to that of the brushless DC motor, so it can be driven by 120 degree square wave voltage and use PWM pulse patterns in two-phase feeding scheme to control the speed. In this driving method, the back electromotive force (BEMF) current in the open phase is generated by the BEMF. It can be appeared or disappeared according to the changes of the neutral voltage of the machine. In this paper, the time-stepped voltage source finite-element method taking BEMF current into account is proposed. Its influences on the performances of the FRM are also investigated. To prove the propriety of the proposed analysis method, a Digital Signal Processor (DSP) installed experimental devices are equipped and the experiment is performed.
Keywords
FRM; FEM; DSP; Permanent Magnet;
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