The Transactions of The Korean Institute of Electrical Engineers (전기학회논문지)

The Korean Institute of Electrical Engineers (대한전기학회)
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A Study on the Control to Compensate Position Sensor Error of the BLDC Motor in an Auxiliary Air Compressor

보조 공기 압축기 내 BLDC전동기의 위치센서 오류 보상 제어

  • Kim, In-Gun (Dept. of Electrical Engineering, Hanyang University) ;
  • Hong, Hyun-Seok (Dept. of Electrical Engineering, Hanyang University) ;
  • Lee, Ju (Dept. of Electrical Engineering, Hanyang University)
  • Received : 2015.09.24
  • Accepted : 2015.10.20
  • Published : 2015.11.01
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Abstract

Auxiliary air compressor(ACM) applied to railroad cars is a device which controls amount of compressed air in order that pantographs can be mounted correctly on the roof of an electric train. Existing ACMs consist of dc motors and brushes wear out due to friction with a commutator. Therefore, continuous maintenance is required. However, three phase BLDC motors have higher power density compared to dc motors and the machine maintenance is not needed because electric commutation is possible. The three phase generally uses hall sensors to get position information and this enables the accurate control. This paper suggests an algorithm that compensates the errors occurred when the hall sensors have a breakdown for stable operation.

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References

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