科学技术的发展与人类文明的进步使得汽车已经成为人们生产生活中的主要交通

The development of science and technology and the advancement of human civilization have made automobiles the main means of transportation in people's production and life. However, due to the shortage of resources and serious environmental pollution, we are using cleaner new energy. The design and production of electric vehicles and hybrid vehicles play an extremely important role in solving the lack of resources and serious environmental pollution and protecting the ecological environment. The hub motor in the automobile drive system is an important component to drive the automobile, and it is of great significance to analyze and study its loss. <br>First of all, the paper analyzes and studies the loss of the hub motor and determines the type of the motor loss. It describes the knowledge of the motor loss, and uses the knowledge of the motor loss knowledge to derive the calculation formula of various types of motor losses. Secondly, the theoretical points of finite element simulation are described. Based on maxwell, the finite element simulation model of the motor is established, and the static magnetic field simulation and the transient simulation of the motor are carried out respectively, which verifies that the theoretical derivation is correct. And based on the workbench simulation of the motor temperature field, it is proved that the motor winding has the highest heat distribution and the highest temperature. Finally, based on genetic algorithm, this paper optimizes the loss of the motor, optimizes the loss of the motor to a certain extent, and improves the driving efficiency of the wheel hub motor to the car. <br>Through the loss analysis calculation and optimization design of the hub motor, the simulation calculation and design results that are in line with the actual situation are obtained. Among them, the simulation of the temperature field can further study and analyze the cooling method of the motor. Based on genetic algorithm for hub motor loss optimization, genetic algorithm can be further improved to further optimize motor loss.

科学技术的发展与人类文明的进步使得汽车已经成为人们生产生活中的主要交通工具。但是资源的匮乏、环境严重污染等问题促使的我们使用更加清洁的新能源，电动汽车和混合动力汽车的设计生产对解决资源匮乏与环境严重污染、保护生态环境起到极其重要的作用。而汽车驱动系统中的轮毂电机是驱动汽车行驶的的重要部件，对其损耗经行分析研究具有重要意义。<br>首先，论文对于轮毂电机的损耗进行了分析研究确定了电机损耗的种类，对电机损耗的相关知识做进行叙述，并利用相关知识的电机损耗知识推导出了电机的各类损耗的计算公式。其次，阐述了有限元仿真的理论要点，基于maxwell建立电机的有限元仿真模型，分别对电机进行了静态磁场仿真以及瞬态仿真，验证了理论推导是正确的。并且基于workbench对电机温度场仿真，证明了电机绕组是电机热量分布最高，温度最高。最后，本文基于遗传算法对电机的损耗进行了优化设计，在一定程度上优化了电机的损耗，提升轮毂电机对汽车的驱动效率。<br>通过轮毂电机的损耗分析计算以及优化设计，得出了与实际相符合的仿真计算和设计结果。其中，温度场的仿真可以进一步深入研究分析计算电机的冷却方式等。基于遗传算法的轮毂电机损耗优化，可以对遗传算法进行更进一步的改进，将电机损耗进一步优化。

With the development of science and technology and the progress of human civilization, automobile has become the main means of transportation in people's production and life. However, the lack of resources, serious environmental pollution and other issues promote us to use cleaner new energy. The design and production of electric vehicles and hybrid vehicles play an extremely important role in solving the lack of resources and serious environmental pollution and protecting the ecological environment. The hub motor in the driving system is an important part of driving the car, and the analysis of its loss is of great significance.<br>First of all, the paper analyzes and studies the loss of hub motor, determines the type of motor loss, describes the relevant knowledge of motor loss, and deduces the calculation formulas of all kinds of motor loss by using the motor loss knowledge of relevant knowledge. Secondly, the theoretical points of the finite element simulation are described. Based on Maxwell, the finite element simulation model of the motor is established. The static magnetic field simulation and the transient simulation of the motor are carried out respectively, and the correctness of the theoretical derivation is verified. And based on the workbench to the motor temperature field simulation, it is proved that the motor winding has the highest heat distribution and temperature. Finally, based on genetic algorithm, this paper optimizes the loss of the motor, optimizes the loss of the motor to a certain extent, and improves the driving efficiency of the hub motor to the car.<br>Through the loss analysis and optimization design of the hub motor, the simulation calculation and design results are obtained. Among them, the simulation of temperature field can further study and calculate the cooling mode of motor. The loss optimization of hub motor based on genetic algorithm can further improve the genetic algorithm and further optimize the loss of motor.<br>