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首页> 外文期刊>Magnetics, IEEE Transactions on >Design of Deep Sea Oil-Filled Brushless DC Motors Considering the High Pressure Effect
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Design of Deep Sea Oil-Filled Brushless DC Motors Considering the High Pressure Effect

机译：考虑高压影响的深海充油无刷直流电动机的设计

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摘要

The deep sea oil-filled brushless DC (BLDC) motor operates in an underwater environment. The pressure varies with the working depth. The viscosity of the oil in the motor is sensitive to the pressure and hence the viscous drag loss varies with the pressure. The high pressure has influence on the loss characteristics of silicon steel and results in the increase of the core loss in the motor. Computational fluid dynamics (CFD) method is adopted to calculate the flow field in the air gap and the viscous drag loss at different pressures is obtained. Finite element method (FEM) is adopted to obtain the core loss at high pressure. The motor design considering the high pressure effect is compared with the motor design neglecting the pressure effect. The comparison results show that high pressure has large influence on viscous drag loss and core loss, resulting in the decrease in the efficiency and increase in the temperature rise. The experiment is done and the results verify the effectiveness of the calculated results.
机译：深海含油无刷直流（BLDC）电动机在水下环境中运行。压力随工作深度而变化。电机中机油的粘度对压力敏感，因此粘性阻力损失随压力而变化。高压会影响硅钢的损耗特性，并导致电机铁芯损耗增加。采用计算流体力学（CFD）方法计算气隙内的流场，得到不同压力下的粘性阻力损失。采用有限元法（FEM）获得高压下的铁损。将考虑高压效应的电动机设计与忽略压力效应的电动机设计进行比较。比较结果表明，高压对粘性阻力损失和堆芯损失影响很大，从而导致效率下降和温升增加。实验已经完成，结果验证了计算结果的有效性。

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