Thermal design of high power-density additively-manufactured induction motors
Thermal design of high power-density additively-manufactured induction motors
复制标题
高功率密度增材制造感应电机的热设计
DOI：
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发表时间：
2014
期刊：
影响因子：
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通讯作者：
J. Tangudu
中科院分区：
文献类型：
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作者：
R. Ranjan;J. Tangudu
本文的目的是提出的热和机械应力分析的增材制造的感应电机牵引应用。增材制造工艺能够在电机的定子芯中实现更高的铜填充因子，并且还改善了定子芯中的内部热传导。虽然更高的铜填充系数增加了机器的功率密度，但它以更高的散热密度为代价。由于操作热机械应力，这对机器热管理及其可靠性提出了新的挑战。热应力分析已经提出了各种电磁优化的机器设计在额定功率为30千瓦。定子中的最大电流密度预测为不同的机器尺寸，冷却方案，和定子槽中的最大允许温度。结果表明，在额定功率为30 kW时，采用液体冷却的感应电机定子电流密度可达20 A/mm ~ 2以上。
The objective of this paper is to present the thermal and mechanical stress analysis of an additively manufactured induction motor for traction applications. The additive manufacturing process enables higher copper fill factors in the stator core of the machine and also improves the internal thermal conduction in the stator core. While a higher copper fill factor increases the machine power density, it comes at the cost of higher heat dissipation density. This poses new challenges for the machine thermal management and its reliability due to the operational thermo-mechanical stresses. Thermal stress analysis has been presented for various electromagnetically optimized machine designs at a rated power of 30 kW. Maximum current density in the stator is predicted for varying machine size, cooling schemes, and maximum allowable temperature in the stator slot. It is shown that liquid cooling of the induction machine can achieve stator current density > 20 A/mm2 in the stator for a rated power of 30 kW.