Modal Analysis of Claw-pole Alternator Considering Orthotropy of Stator Core and Windings

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Journal of Vibration and Shock ›› 2017, Vol. 36 ›› Issue (12) : 43-49.

Deng Wenzhe 1 Zuo Shuguang 1 Sun Han 2 Wu Shuanglong 1 Zhang Guohui 1

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Abstract

To analysis the inherent characteristics, finite element (FE) and experimental modal analysis was conducted for a claw-pole alternator. Firstly, modal shapes and frequency were obtained through modal test for stator, and orthotropic material parameters of stator core and windings were then identified according to finite element equivalent model and test results. Secondly, FE model of free modal was built considering the complex connection between different components, and its accuracy was validated through free modal test. Finally, Constrained FE model was built on the basis of free modal and vibration test was conducted. The results of free modal test and vibration test reveal that modal characteristics can be precisely predicted through proposed model synthesizing orthotropic material parameters and bolt pretension, and it lays the foundation for prediction and reduction of vibration and noise.

Key words

claw-pole alternator / modal analysis / orthotropic / bolt pretension / vibration

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Deng Wenzhe 1 Zuo Shuguang 1 Sun Han 2 Wu Shuanglong 1 Zhang Guohui 1 . Modal Analysis of Claw-pole Alternator Considering Orthotropy of Stator Core and Windings[J]. Journal of Vibration and Shock, 2017, 36(12): 43-49

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