Abstract The increase of the operating temperature of electrical machines is a major challenge in the context of the large-scale use of electricity in many industrial or individual applications such as mobility. Indeed, working at higher temperatures makes it possible to place electrical actuators in critical areas – such as aircraft engines, for example – and/or to significantly improve the power-to-weight ratio of the machine. For several applications (deep pumping, ventilation, etc.), the use of the induction machine is still preferred due to cost, simplicity and robustness essentially. The objective of this study is to estimate the possibilities of making a high-temperature squirrel cage induction machine. A significant increase in the operating temperature of a machine would indirectly allow us to envisage an increase in the current density in the active conductors and thus a significant improvement in the power-to-weight ratio. However, this is at the sacrifice of efficiency. The aim of this study is to evaluate this decrease in efficiency correlated with the increase in the temperature to find the best compromise according to the relevant applications. An analytic sizing model has been proposed for the prediction of losses, which will be coupled with a thermal model to predict the temperature in different parts of the machine. This study presents essential information on the influence of temperature on the parameters important for the performance of an induction machine.

中文翻译：

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具有更高绕组温度的高功率密度感应电机

摘要 在许多工业或个人应用（如移动性）中大规模使用电力的背景下，电机工作温度的升高是一个重大挑战。事实上，在更高的温度下工作可以将电动执行器放置在关键区域（例如飞机发动机）和/或显着提高机器的功率重量比。对于一些应用（深抽、通风等），由于成本、简单性和稳健性，感应电机的使用仍然是首选。本研究的目的是评估制造高温鼠笼式感应电机的可能性。机器工作温度的显着增加将间接使我们能够设想增加有源导体中的电流密度，从而显着改善功率重量比。然而，这是以牺牲效率为代价的。本研究的目的是评估与温度升高相关的效率下降，以根据相关应用找到最佳折衷方案。已经提出了用于预测损失的分析尺寸模型，该模型将与热模型结合以预测机器不同部分的温度。本研究提供了有关温度对感应电机性能重要参数影响的重要信息。