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A new class of resonant discharge drive topology for switched reluctance motor

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3 Author(s)
Asgar, M. ; Dept. of Electr. & Comput. Eng., Shahid Beheshti Univ. G.C., Tehran, Iran ; Afjei, E. ; Siadatan, A.

Switched Reluctance Motor (SRM) drive has a remarkable characteristic, which makes it attractive for high-speed in low voltage applications. In this paper, a new drive circuit from the bridge family which uses resonant circuit during discharge period is presented. The new topology provides faster rate of current discharge, the basic control strategy for a switched reluctance motor drive circuit is explained. New class of resonant discharge topologies for SRM drive circuit is presented. These topologies provides faster rate of fall for the phase current, which permits the motor to operate at higher speeds. In the new circuits a capacitor is connected in series with the motor winding. In addition, an energy recovery circuit, the stored magnetic energy that fall to trap on resonant capacitor in due discharge period recovered from it by the single quadrant chopper comprising of one transistor, capacitor and diode sent to the DC source. A capacitor is charged resonantly by a use of motor phase windings during the phase turn off periods and then discharged via an inductor and a diode during the next working strokes. A detailed explanation and demonstration of the converter circuits have been presented.

Published in:

Power Electronics and Applications, 2009. EPE '09. 13th European Conference on

Date of Conference:

8-10 Sept. 2009