Title :
Finite element analysis of flux-reversal machine considering BEMF current of a switch-off phase and v-i characteristics of a transistor and a freewheeling diode
Author :
Kim, Tae Heoung ; Won, Sung Hong ; Lee, Ju
Author_Institution :
Dept. of Electr. Eng., Gyeongsang Nat. Univ., Gyeongnam
fDate :
4/1/2006 12:00:00 AM
Abstract :
This paper describes the effect of pulsating current generated by back-electromotive force (BEMF) current of switch-off phase in flux-reversal machine (FRM) which is driven by 120deg square wave voltage sources. A two-dimension time-stepped voltage source finite element analysis using a direct convergence method is proposed to analyze an electromagnetic field and the BEMF current. To prove the propriety of the proposed analysis method, we build the prototype FRM and a digital signal processor (DSP) installed controller as a set for the experiment
Keywords :
electric potential; electromagnetic fields; finite element analysis; magnetic flux; permanent magnet machines; stators; back electromotive force current; digital signal processor; direct convergence method; electromagnetic field; finite element analysis; flux reversal machine; freewheeling diode; square wave voltage sources; switch off phase; time-stepped voltage source; transistor; Convergence; Digital signal processing; Digital signal processors; Diodes; Electromagnetic analysis; Electromagnetic fields; Finite element methods; Prototypes; Signal analysis; Voltage; Back-electromotive force (BEMF); digital signal processor (DSP); finite element method (FEM); flux-reversal machine (FRM); permanent magnet; pulse width modulation (PWM) mode;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2006.871458
