反凸极永磁同步电机弱磁特性分析

doi:10.19595/j.cnki.1000-6753.tces.L80733

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Abstract A new negative salient pole permanent magnet synchronous motor（PMSM）was presented. The magnetic bridge between the adjacent segmental permanent magnet and adjusting iron core are used to provide the direct axis magnetic flux path. Therefore, the d-axis inductance is greater than the q-axis inductance. At low speed, positive d-axis current is adopted to control positive magnetic resistance torque, and positive d-axis current can effectively improve the working point of permanent magnet. At high speed, relatively small d-axis flux weakening current is used to weaken air gap flux and improve the flux weakening range of the motor effectively. The model of d-q-axis magnetic circuit for the new negative salient pole permanent magnet synchronous machine was established. The characteristics of electromagnetic torque and flux weakening of the new negative salient pole permanent magnet synchronous motor were analyzed, and the finite element analysis was carried out. The theoretical analysis results agree with the simulation results, which verify the validity and feasibility of the flux weakening of the negative salient pole permanent magnet synchronous motor.

Key words： Negative salient pole permanent magnet synchronous motor flux weakening d-axis and q-axis inductance adjusting iron core

Received: 10 July 2018 Published: 02 January 2020

PACS:

TM351

Corresponding Authors: 国家自然科学基金（51307045）、黑龙江省自然科学基金（LH2019E075）、黑龙江省高校基本科研业务费（HDRCCX-2016Z06、RCYJTD201802）、黑龙江省教育厅成果培育转化项目（TSTAU-C2018014）和黑龙江大学杰出青年基金（JCL201705）资助

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	Li Chunyan
	Wang Yu
	Meng Tao

Cite this article:

Li Chunyan,Wang Yu,Meng Tao. Research on Flux Weakening Characteristics of a Negative Salient Pole Permanent Magnet Synchronous Motor[J]. Transactions of China Electrotechnical Society, 2019, 34(zk2): 474-483.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.L80733 OR https://dgjsxb.ces-transaction.com/EN/Y2019/V34/Izk2/474

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