Characteristics of Analog Encoder for SRM Drive

  • Park, Sung-Jun (Dept. of Electrical & Electronics, Tong-myung College) ;
  • Ahn, Jin-Woo (Department of Electrical and Computer r Engineering, Kyungsung University)
  • Published : 2002.03.01

Abstract

In a switched reluctance motor drive, it is important to synchronize the stator phase excitation with the rotor position; therefore, the position of rotor is an essential information. Although optical encoders or resolvers are used to provide the position information, these sensors are expensive. Moreover, in the high-speed region, switching angles are fluctuated back and forth out of the preset value, which is caused by the sampling period of the microprocessor. In this paper, a low cost analog encoder suitable for practical applications is proposed. And the control algorithm to generate switching signals using a simple digital logic is presented. The validity of the proposed analog encoder with a proper logic controller is verified from the experiments.

Keywords

References

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