异形永磁体圆柱型直线电机的优化设计

doi:10.19595/j.cnki.1000-6753.tces.160670

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Abstract In order to make a further improvement in linear motor's thrust density, a novel structure of cylindrical linear motor with Halbach array of trapezoidal permanent magnet (TH-CLM) is proposed by combining cylindrical linear motor with trapezoidal permanent magnet (T-CLM) with traditional Halbach array. Magnetic circuit analysis model of TH-CLM is built. The influence of permanent magnet's shape to magnetic field and thrust is studied, and optimal angle of permanent magnet to obtain the maximum thrust density is obtained. Thrust density of T-CLM and TH-CLM is analyzed. The results indicate that TH-CLM strengthens the air-gap magnetic flux density and thrust density by using Halbach array. A comparison of CLMs' thrust density verifies TH-CLM has a certain advantage in terms of thrust density.

Key words： Linear motor trapezoidal permanent magnet thrust density finite element analysis Halbach array

Received: 12 May 2016 Published: 14 September 2017

PACS:

TM359.4

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	Articles by authors
	Luo Ciyong
	Li Zhutian
	Shen Qiping

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Luo Ciyong,Li Zhutian,Shen Qiping. Optimal Design of a Cylindrical Linear Motor with Trapezoidal Permanent Magnet[J]. Transactions of China Electrotechnical Society, 2017, 32(17): 127-134.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.160670 OR https://dgjsxb.ces-transaction.com/EN/Y2017/V32/I17/127

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