一种增强可靠性的永磁同步电机初始角检测

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Abstract The accuracy of the permanent magnet synchronous motor initial angle detection is the decisive factor for starting torque value and starting it successfully. Based on the analysis of the inductor saturation effect, the paper proposes the voltage vector method of the rotor initial position angle detection of surface mounted permanent magnet synchronous motor. To deal with the problem of low accuracy and unreliability in the traditional detection method of voltage vector, the reverse direction inductance to add constraints when handling the second wave of voltage vector is used, and proposed increasing the action time of voltage vector to increase the peak current after the second wave of voltage vector. By enhancing the effect of demagnetization and enlarging the differences of each vector current, it finally improves the reliability of initial angle detection. The experimental results verify the feasibility and effectiveness of analysis and design. It shows that the detection method can not only guarantee the rotor static, but also improve reliability greatly and accuracy increased from 7.5°to 1.8°for initial position detection, so it has the great value of practical engineering.

Key words： Surface mounted permanent magnet synchronous motor initial position angle inductance saturation effect reliability

Received: 04 October 2013 Published: 23 March 2015

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TM315

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	Huang Keyuan
	Zhou Lize
	Zhou Taotao
	Huang Shoudao

Cite this article:

Huang Keyuan,Zhou Lize,Zhou Taotao等. An Enhanced Reliability Method for Initial Angle Detection on Surface Mounted Permanent Magnet Synchronous Motors[J]. Transactions of China Electrotechnical Society, 2015, 30(1): 45-51.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2015/V30/I1/45

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