电动汽车用感应电机削弱振动和噪声的随机PWM控制策略

doi:10.19595/j.cnki.1000-6753.tces.171747

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Abstract Random switching frequency pulse width modulation (RFPWM) can uniform the current spectrum, weakening electromagnetic vibration and noise of the motor. Automotive used induction motor’s dominant vibration frequency is low, generally between 0.6-5 kHz, so the strategy of only using RFPWM is helpless for the vibration reduction. Therefor a new vector control method was presented in this paper, which combined current harmonic spectral shaping with RFPWM. A band-pass filter was adopted to extract the harmonics within the motor dominant vibration frequency from the feedback d, q-axis current, a current harmonic spectrum shaping algorithm was designed to suppress it, and uniform current spectrum, which weakened electromagnetic vibration and noise of motor. The theoretical analysis and simulation are carried out of the proposed control method, a 10 kW vehicle induction motor control platform is implemented, the data of current and motor vibration are collected and analyzed, the effectiveness and feasibility of the control strategy is proved. This method does not need to change the hardware, thus has good practicality.

Key words： Random switching frequency vibration and noise electric vehicle current spectrum shaping

Received: 02 January 2018 Published: 17 April 2019

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TM343

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	Liu Heping
	Liu Qing
	Zhang Wei
	Miao Yiru
	Liu Ping

Cite this article:

Liu Heping,Liu Qing,Zhang Wei等. Random PWM Technique for Acoustic Noise and Vibration Reduction in Induction Motors Used by Electric Vehicles[J]. Transactions of China Electrotechnical Society, 2019, 34(7): 1488-1495.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.171747 OR https://dgjsxb.ces-transaction.com/EN/Y2019/V34/I7/1488

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