To solve the problem of the serious mileage reduction of electric vehicles in winter, this paper introduces a new type of motor with eddy current braking and heating system (EBHS). EBHS can convert the vehicle’s kinetic energy into the thermal energy which can be used for heating the cabin and the battery at the right temperature. This paper proposes the structural layout and operating modes with the novel motor. The air gap magnetic density of the ECR is calculated by the magnetic circuit method. The braking torque is solved by the transient electromagnetic finite element method. The eddy current loss power at different speeds is used for analyzing heat performance. Based on MATLAB/Simulink environment, the fuzzy control method is used to simulate the EBHS’s braking energy efficiency. Compared with PTC heating, the power consumption of the new motor is reduced by 25 % and the cabin can reach 20 °C in 160 seconds. Finally, it is verified by bench test that the retarder stator stayed within 110 °C when it is continuously operated for 12 minutes. The braking torque of the finite element analysis result meet the test value, and the error rate is not higher than 11.7 %.

为解决电动汽车冬季行驶里程严重减少的问题，本文介绍了一种带有涡流制动加热系统（EBHS）的新型电机。EBHS 可以将车辆的动能转化为热能，用于在合适的温度下加热驾驶室和电池。本文提出了新型电机的结构布局和运行方式。ECR的气隙磁密度通过磁路法计算。制动力矩采用瞬态电磁有限元法求解。不同速度下的涡流损耗功率用于分析热性能。基于MATLAB/Simulink环境，采用模糊控制方法对EBHS的制动能效进行仿真。与PTC加热相比，新电机功耗降低25%，机舱160秒即可达到20°C。最后通过台架试验验证，缓速器定子连续工作12分钟，温度保持在110℃以内。有限元分析结果制动力矩满足试验值，误差率不高于11.7%。