一种带抽头线圈的无刷直流电机无线驱动与控制方法

doi:10.19595/j.cnki.1000-6753.tces.211294

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Abstract

At present, wireless power transfer (WPT) is mainly used for resistive loads such as battery charging. However, there are a large number of motor loads in industrial application. Back-EMF is generated during operation of such loads, and the load characteristics are more complicated, which makes it difficult for WPT to drive motor-type loads. This paper proposes a wireless drive and control scheme for brushless DC (BLDC) motors based on simultaneous wireless information and power transfer (SWIPT), using an inverter with multi-frequency PWM technology to output two frequencies at the same time, and transmit the power and control signals to BLDC motor in two separate channels; a tapped coil structure is proposed to decouple the transfer of two frequencies in a set of coil. Under the condition that the primary and secondary sides are symmetrical and the total number of coil turns remains unchanged, the effect of the tap position on the self-inductance and mutual inductance in two transfer channels is analyzed, thereby effectively reducing the mutual interference between power transfer and information transfer. An experimental setup was built. As the speed control signal increased from 2.8V to 5V, the motor speed increased from 1 710 r/min to 3 000 r/min. The experiment showed that the proposed method can make the BLDC motor run smoothly and control the motor speed in real time.

Key words： Brushless DC motor simultaneous wireless information and power transfer (SWIPT) motor control tapped coil multi-frequency PWM

Received: 16 August 2021

PACS:

TM724

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	Wu Jie
	Wang Wenlei
	Zhang Hengyi
	Gao Pengfei
	Jin Nan

Cite this article:

Wu Jie,Wang Wenlei,Zhang Hengyi等. A Wireless Drive and Control Method for Brushless DC Motor with Tapped Coil[J]. Transactions of China Electrotechnical Society, 2022, 37(23): 6116-6125.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.211294 OR https://dgjsxb.ces-transaction.com/EN/Y2022/V37/I23/6116

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