[1] Lin Mingyao, Zhang Zhiyao, Lin Keman, Zhou Guqing, et al. Anti-reverse rotation startup method for sensorless brushless DC motor [J]. Journal of Southeast University (English Edition), 2009, 25 (2): 199-202. [doi:10.3969/j.issn.1003-7985.2009.02.012]

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Anti-reverse rotation startup method for sensorless brushless DC motor()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

25

Issue:

2009 2

Page:

199-202

Research Field:

Electrical Engineering

Publishing date:

2009-06-30

Info

Title:

Anti-reverse rotation startup method for sensorless brushless DC motor

Author(s):

Lin Mingyao;  Zhang Zhiyao;  Lin Keman;  Zhou Guqing

School of Electrical Engineering, Southeast University, Nanjing 210096, China

Keywords:

brushless DC motor;  sensorless control;  anti-reverse rotation;  back-electromotive force;  switch

PACS:

TM351

DOI:

10.3969/j.issn.1003-7985.2009.02.012

Abstract:

In order to start up the brushless DC motor(BLDCM)without reverse rotation and smoothly switch the running state of the motor, a novel startup and smoothly switching method for a sensorless BLDCM is presented.Based on the saturation effect of the stator iron, six short voltage pulses are applied to determine the initial rotor position and the rotor can be found within 60°.After that, a series of short and long voltage pulses are used to accelerate the motor and the variation of the response current is utilized to detect the rotor position dynamically.When the motor reaches a certain speed at which the back-electromotive force(EMF)method can be applied, all the power devices are turned off and the running state of the motor is smoothly switched at the moment determined by the relationship between the terminal voltage waveform and the commutation phases.The experimental results verify the feasibility and validity of the proposed method.

References:

[1] Shen Jianxin, Lü Xiaochun, Du Junhong, et al.Analysis of 3-step starting for sensorless BLDC motor[J].Small & Special Electrical Machine, 1998, 28(5):8-11.
[2] Dunfield John C.Position detection for brushless DC motor without hall effect devices using a time differential method:US Patent, 5028852 [P].1991-07-02.
[3] Jang G H, Park J H, Chang J H.Position detection and start-up algorithm of a rotor in a sensorless BLDC motor utilizing inductance variation[J].Electric Power Applications, 2002, 149(2):137-142.
[4] Lee Wook-Jin, Sul Seung-Ki.A new starting method of BLDC motors without position sensor[J].IEEE Transactions on Industry Applications, 2006, 42(6):1532-1538.
[5] Schmidt P B, Gasperi M L, Ray G, et al.Initial rotor angle detection of a non-salient pole permanent magnet synchronous machine[C]//Conference Record—IAS Annual Meeting(IEEE Industry Applications Society).New Orleans, LA, USA, 1997, 1:459-463.
[6] Chang Yen-Chuan, Tzou Ying-Yu.A new sensorless starting method for brushless DC motors without reversing rotation[C]//IEEE 38th Annual Power Electronics Specialists Conference.Orlando, FL, USA, 2007:619-624.

Memo

Memo:

Biography: Lin Mingyao(1959—), male, doctor, professor, mylin@seu.edu.cn.
Citation: Lin Mingyao, Zhang Zhiyao, Lin Keman, et al.Anti-reverse rotation startup method for sensorless brushless DC motor[J].Journal of Southeast University(English Edition), 2009, 25(2):199-202.

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