本文選題：電磁振動 + 基波磁場　； 參考：《振動與沖擊》2016年02期

【摘要】：以船用高速同步發(fā)電機為對象進行電磁振動特性分析。用有限元法計算空載下電機基波氣隙磁場引起的徑向電磁力波在機座機腳處垂向振動加速度。通過對不同機座安裝方式、材料剛度及結構阻尼的振動仿真對比,分析影響振動加速度主因及有限元模型簡化處理對計算結果影響。用三維諧波場及瞬態(tài)場有限元法計算機腳振動加速度,用電動機運行法測試發(fā)電機空載下機座機腳振動加速度。結果表明,仿真與試驗結果基本一致,機座及機腳振動受機座安裝方式影響較大,定子振幅受材料彈性模量響應較大,在彈性安裝/自由狀態(tài)下機座形變分布主要受結構阻尼影響。該結果可為船用高速電機減振降噪設計、研究提供依據(jù)及參考。
[Abstract]:The electromagnetic vibration characteristics of marine high speed synchronous generator are analyzed. A finite element method is used to calculate the vertical vibration acceleration of the radial electromagnetic force wave caused by the air-gap magnetic field of the fundamental wave of the motor at the base of the machine. By comparing the vibration simulation of different mounting modes, material stiffness and structural damping, the main factors affecting vibration acceleration and the effect of simplified finite element model on the calculation results are analyzed. Three dimensional harmonic field and transient field finite element method were used to measure the vibration acceleration of the computer foot, and the motor operation method was used to measure the vibration acceleration of the engine foot. The results show that the simulation results are in good agreement with the test results. The vibration of the base and foot is greatly affected by the mounting mode of the base, and the amplitude of the stator is more responsive to the elastic modulus of the material. The deformation distribution of the base is mainly affected by the structural damping under the elastic installation / free state. The results can be used as a reference for the design of vibration and noise reduction of marine high speed motor.
【作者單位】： 海軍工程大學艦船綜合電力技術國防科技重點實驗室;
【基金】：國家自然科學重點基礎研究發(fā)展計劃973項目(2013CB035601) 國家自然科學基金資助項目(51137005;51222705)
【分類號】：U665.1
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本文編號：1971583