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Strategy of Starting Sensorless BLDCM with Inductance Method and EMF Integration

Author

Listed:
  • Wang Dafang
  • Qi Ji
  • Zhu Cheng
  • Liao Jiangmin
  • Yuan Yechen

Abstract

In, conventional 3-stage start-up method of sensorless brushless direct current motor (BLDCM), the rotor is likely to jitter because rotor position cannot be obtained, and the motor is apt to lose step when it starts with load. These defects limit its use in engineering applications. In order to achieve smooth start in specific direction and guarantee start-up success rate with load, a start-up method based on improved inductance method and electromotive force (EMF) integration is proposed applying different voltage vectors according to rotor position interval judged by inductance method and determining integrator start-up time according to rotor initial position and the EMF. Experiments show that the method guarantees smooth acceleration and increases start-up success rate with load.

Suggested Citation

  • Wang Dafang & Qi Ji & Zhu Cheng & Liao Jiangmin & Yuan Yechen, 2013. "Strategy of Starting Sensorless BLDCM with Inductance Method and EMF Integration," Mathematical Problems in Engineering, Hindawi, vol. 2013, pages 1-8, November.
    • Handle: RePEc:hin:jnlmpe:146058
    DOI: 10.1155/2013/146058
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