Journal of Advanced Marine Engineering and Technology

The Korean Society of Marine Engineering (한국마린엔지니어링학회)
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Sensorless Speed Control of Induction Motor using Current Compensation

  • Oh, Sae-Gin (Division of Marine Engineering, Graduate School of Korea Maritime University) ;
  • Kim, Jong-Su (Research Institute of Maritime Industry of Korea Maritime University) ;
  • Kim, Sung-Hwan (Division of Mechatronics Engineering, of Korea Maritime University)
  • Published : 2003.07.01
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Abstract

A new method of induction motor drive, which requires neither shaft encoder nor speed estimator, is presented. The proposed scheme is based on decreasing current gap between a numerical model and an actual motor. By supplying the identical instantaneous voltage to both model and motor in the direction of reducing the current difference. the rotor approaches to the model speed. that is. reference value. The indirect field orientation algorithm is employed for tracking the model currents. The performance of induction motor drives without speed sensor is generally characteristic of poorness at very low speed. However, in this system, it is possible to obtain good speed response in the extreme low speed range.

Keywords

References

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