利用冷却介质优化设计的卧式电机

A Cooling-Medium Optimally-Designed Horizontal Electric Machine

提出一种采用浸泡式蒸发冷却的电机结构优化方法。包括以下步骤:以相同电压等级和容量的风冷式电机为比照基准,将定子主绝缘层厚度相应地减少近一半,并将定子电流密度相应地增大;在上述定子主绝缘层厚度和定子电流密度的基础上,根据各参数不同取值的组合计算结果,获得各部件结构的最小形状数据;所述各参数包括气隙磁通密度、定子绕组的匝数、定子和转子的内径和外径以及定子槽和转子槽的高度和宽度。本优化设计充分发挥了浸泡式蒸发冷却技术的优势,在相同电压等级和容量下,电机及各主要部件外形尺寸大大减小,降低了制造成本。

This paper proposes a structural optimization method of adopting immersion e- vaporation cooling. The process includes the following steps： taking the air-cooled electric machine with same voltage level and capacity as a comparative basis, the main insulation thickness of stator is almost decreased to one half, and stator current density is accordingly increased. Based on this, the optimized structure data of various components and parts were obtained according to combination calculation results of various parameters. The described parameters in- clude the air-gap flux density, the turn number of stator windings, the inner and outer diame- ters of stator and rotor, and height and width of stator and rotor slots. This paper fully utilizes the advantages of immersion evaporation cooling technology, which can greatly decrease overall dimensions of electric machine and its main components and parts under the same voltage level and capacity and reduce the manufacturing cost.