高模数电磁力对永磁电机电磁振动影响

doi:10.19595/j.cnki.1000-6753.tces.201385

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Abstract The influences of electromagnetic force harmonics with high mode number on electromagnetic vibration of permanent magnet motor under no load and load condition is analyzed. First, the amplitude, frequency and order of the electromagnetic force of the motor are derived by the Maxwell stress tensor method. Then, the low- and high-order forces that cause low-mode vibration under no-load and load conditions are calculated, and the influence of tooth width on the forces is discussed. Next, the contributions of two kinds of electromagnetic forces to the low-order electromagnetic vibration is analyzed and compared in detail by the modal superposition method, and the analytical results are verified by the finite element method. Finally, the no-load electromagnetic vibration test is carried out on a 10-pole 12-slot permanent magnet motor, and the experimental results are consistent with the simulation results. The results show that the high-order force can cause large low-mode vibrations, but in fractional slot PM motors, its contribution decreases with the increase of load. This paper can provide an idea for the accurate vibration prediction and vibration reduction of the slotted permanent magnet motor.

Key words： High-order force low-mode vibration teeth chopping effect permanent magnet synchronous motor

Received: 15 October 2020

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TM351

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	Hong Jianfeng
	Wang Shanming
	Sun Yuguang
	Sun Xudong
	Cao Haixiang

Cite this article:

Hong Jianfeng,Wang Shanming,Sun Yuguang等. The Influence of High-Order Force on Electromagnetic Vibration of Permanent Magnet Synchronous Motors[J]. Transactions of China Electrotechnical Society, 2022, 37(10): 2446-2458.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.201385 OR https://dgjsxb.ces-transaction.com/EN/Y2022/V37/I10/2446

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