The requirement for electrical machines with high power/torque density has stimulated the development of high efficient cooling systems to dissipate the heat within the machines. This article presents a new water cooling topology for thermal management of a permanent-magnet synchronous machine (PMSM) with concentrated windings. The advanced cooling configuration consists of several water cold plates radially inserted into the core laminations. Therefore, the heat sources in laminations and windings are close to the coolant. Three-dimensional electromagnetic finite-element analysis and the computational fluid dynamics are used to evaluate the performance of the PMSM. In order to evaluate the effectiveness of the proposed cooling configuration, one PMSM with the proposed cooling configuration and the other with the regular water jacket (WJ) are designed and built under the similar sizes and specifications. The simulated and tested results show that the winding temperature can be reduced by over 20 °C using this cooling technique compared to using the WJ at the rated condition.

中文翻译：

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用于高效冷却的水冷板：在具有集中绕组的永磁电机上进行验证


对具有高功率/扭矩密度的电机的要求刺激了高效冷却系统的发展，以散发机器内的热量。本文提出了一种用于集中绕组永磁同步电机 (PMSM) 热管理的新型水冷拓扑。先进的冷却配置由多个径向插入铁芯叠片的水冷板组成。因此，叠片和绕组中的热源靠近冷却剂。三维电磁有限元分析和计算流体动力学用于评估永磁同步电机的性能。为了评估所提出的冷却配置的有效性，在相似的尺寸和规格下设计和建造了一个具有所提出的冷却配置的 PMSM 和另一个具有常规水套 (WJ) 的 PMSM。仿真和测试结果表明，与在额定条件下使用WJ相比，使用这种冷却技术可以将绕组温度降低20°C以上。