五相永磁容错型游标电机弱磁特性研究

doi:10.19595/j.cnki.1000-6753.tces.L70485

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Abstract The fault-tolerant permanent magnet vernier (FTPMV) machine combines the advantages of high torque density of the permanent-magnet vernier machine and high reliability of the fault-tolerance permanent-magnet machine. Hence, it has become a hot research topic for experts and scholars. In order to study the operating performances of this kind of machine in low and high speed operation regions, the structure, modulation principle of magnetic fields and inductance characteristics of two five-phase machines are compared and analyzed in this paper. Additionally, the mathematical model of five-phase machines is deduced based on flux-weakening and the drive system is established according to the space vector pulse width modulation (SVPWM) control method. Based on the stage control strategy, in the low speed region, i_d = 0 control strategy is used. In the high speed region, a kind of flux-weakening control strategy is used and the flux-weakening characteristics of machines are studied importantly, in which the moment of flux-weakening is judged based on the difference between bus-bar voltage and back-EMFs. Moreover, by parameters calculation and simulations, it can be found that the new FTPMV machine possesses better flux-weakening capacity than the conventional FTPMV machine when they works on the condition of rated current. Finally, the theoretical analysis is verified by experimental results.

Key words： Permanent magnet synchronous machine vernier machine fault-tolerant machine flux-weakening performance

Received: 20 August 2016 Published: 25 October 2017

PACS:

TM351

Corresponding Authors: 国家自然科学基金项目（51422702,51577084）、江苏省“333工程”科研项目（BRA2015302）、江苏省高校自然科学研究重大项目（15KJA470002）和江苏省优势学科资助

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	Liu Guohai
	Yang Xinyu
	Xu Liang
	Zhao Wenxiang
	Zhou Huawei

Cite this article:

Liu Guohai,Yang Xinyu,Xu Liang等. Research on Flux-Weakening Performances for Five-Phase Fault-Tolerant Permanent-Magnet Vernier Motors[J]. Transactions of China Electrotechnical Society, 2017, 32(19): 52-61.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.L70485 OR https://dgjsxb.ces-transaction.com/EN/Y2017/V32/I19/52

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