潜液式低温永磁同步电机的设计与特性研究

doi:10.19595/j.cnki.1000-6753.tces.180947

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Abstract As the key component of liquefied natural gas (LNG) pumps, the performance of submerged cryogenic motor is very important. Aiming at reducing LNG gasification capacity and improving mechanical stress, the operating characteristics of the submerged cryogenic permanent magnet synchronous motor (PMSM) in LNG (-161℃) low temperature environment were investigated. The redesign method was discussed, and the influence of low temperature on the material properties and electromagnetic parameters was analyzed theoretically. Then, a coupling finite element simulation model of multi-physical coupling of electromagnetic-fluid-heat-stress was established, and a 11kW, 6 000r/min cryogenic PMSM was designed. For security reasons, the testing device of cryogenic PMSM under low temperature condition (-196℃ liquid nitrogen) was set up, and the experimental study was carried out to verify the design methodology.

Key words： Submerged cryogenic permanent magnet synchronous motor (CPMSM) liquefied natural gas (LNG) liquid nitrogen multi-physics coupling model

Received: 31 May 2018 Published: 26 September 2019

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TM315

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	Guo Chao
	Huang Shoudao
	Wang Jiabao
	Feng Yaojing

Cite this article:

Guo Chao,Huang Shoudao,Wang Jiabao等. Design and Characteristic Research of Submerged Cryogenic Permanent Magnet Synchronous Motor[J]. Transactions of China Electrotechnical Society, 2019, 34(18): 3769-3777.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.180947 OR https://dgjsxb.ces-transaction.com/EN/Y2019/V34/I18/3769

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