基于CE-FEA和小信号分析快速计算逆变器供电下聚磁式场调制电机中永磁体涡流损耗

doi:10.19595/j.cnki.1000-6753.tces.191103

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Abstract In this paper, a method for fast calculating the permanent magnet (PM) eddy current loss (ECL) in a flux-concentrating filed-modulated permanent-magnet (FCFMPM) machine under pulse width modulation (PWM) voltage source inverter (VSI) supply is proposed, which is based on the computationally efficient finite element analysis (CE-FEA), the frequency-domain small-signal analysis, and the analytical ECL model for the cubic PM. The major low-frequency components of the flux density waveform can be constructed with the result obtained form only one-step time-stepping finite element analysis (TSFEA) based on the CE-FEA. Besides, the relationship between PWM harmonic voltages and the flux density variations in the PM can be obtained with four-steps time-harmonic FEA based on the small-signal analysis. Then, the PM ECL can be fast computed with the analytical PM ECL model. The influence of axial segmentation and the eddy current reaction effect have been considered in the proposed method for the PM ECL calculation. Compared with the traditional TSFEA, the calculation speed of the proposed method improves hundreds of times while the relative error of the low-frequency ECL is within 4% and that of the PWM harmonic ECL is limited to 8.4%.

Key words： Flux-concentrated filed-modulated permanent-magnet (FCFMPM) machine pulse width modulation (PWM) eddy current loss small-signal analysis finite element method

Received: 29 August 2019 Published: 12 March 2020

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TM351

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	Zhu Sa
	Lu Zhipeng
	Wang Weidong
	Tian Jian
	Wang Hao

Cite this article:

Zhu Sa,Lu Zhipeng,Wang Weidong等. Fast Calculation of PM Eddy Current Loss in FCFMPM Machine under PWM VSI Supply Based on CE-FEA and Small-Signal Analysis[J]. Transactions of China Electrotechnical Society, 2020, 35(5): 963-971.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.191103 OR https://dgjsxb.ces-transaction.com/EN/Y2020/V35/I5/963

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