This article presents the definition of the performance that the electric motor should have in order to satisfy the requirements of the electric vehicle in terms of acceleration time and maximum speed, starting from a simplified vehicle model, considering the motor torque minimization and the input power minimization. In order to verify the effectiveness of the synchronous reluctance motor in traction applications, it has been evaluated in two case studies: a high-performance vehicle and a city car, where different flux weakening capabilities from the motor in function of the minimization strategies can be pursued to satisfy the requirements. If the car requires high performance in terms of acceleration time and maximum speed, the poor flux weakening capabilities of the synchronous reluctance motor induces a machine oversizing in terms of peak power; by assuming this, it is, however, possible to satisfy the requirements considering the maximum available encumbrance due to an advanced and innovative optimized design procedure. The motor of the city car is obtained only by modifying the stack length and the windings (scaled version), and on this last solution, a prototype has been realized and fully tested; the experimental tests confirm the results of the simulations.

中文翻译：

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同步磁阻电机在电动汽车中的采用：关注弱磁能力

本文从简化的车辆模型出发，考虑电机扭矩最小化和输入功率最小化，给出了为满足电动汽车在加速时间和最大速度方面的要求，电动机应具有的性能的定义. 为了验证同步磁阻电机在牵引应用中的有效性，已在两个案例研究中对其进行了评估：高性能车辆和城市汽车，其中可以根据最小化策略对电机的不同磁通减弱能力进行评估追求满足要求。如果汽车在加速时间和最高速度方面要求高性能，同步磁阻电机弱磁能力差导致电机峰值功率过大；然而，通过假设这一点，由于先进和创新的优化设计程序，有可能满足考虑到最大可用负担的要求。城市汽车的电机仅通过修改堆叠长度和绕组（缩放版本）获得，并且在最后一个解决方案上，已经实现了原型并进行了全面测试；实验测试证实了模拟的结果。在最后一个解决方案中，原型已经实现并经过全面测试；实验测试证实了模拟的结果。在最后一个解决方案中，原型已经实现并经过全面测试；实验测试证实了模拟的结果。