新能源电机系统性能匹配优化研究

Research on Performance Matching Optimization of New Energy Motor System

主要针对新能源电机系统在不同车型上的应用进行性能匹配优化研究。从平台化的车型参数出发进行电机系统参数匹配优化设计,同时进行闭环仿真计算保证车辆的动力性能。在电机系统的效率优化提升方面,基于乘用车常用NEDC工况,获取电机系统在工况下的运行数据,基于仿真数据一方面研究电机系统在对应工况下的高效区间分布;另一方面根据电机系统在驱动和发电状态下的电功率和机械功率计算平均效率,同时结合不同方案下的效率MAP差异,判断不同方案在整车经济性上的表现。通过本文提到的性能匹配优化研究方法,可以缩短开发产品周期,保证项目在前期的输入定位相对准确,从而保证产品开发完成后可以有较强的市场竞争力,可以满足绝大多数车型的需求。更加有利于后续的市场推广。

The performance matching optimization research is mainly aimed at the application of new energy motor systems on different vehicle models.Starting from the platform-based model parameters,the motor system parameter matching optimization design is carried out,and the closed-loop simulation calculation is carried out to ensure the dynamic performance of the vehicle.In terms of the efficiency optimization and improvement of the motor system,based on the commonly used NEDC operating conditions of passenger cars,the operating data of the motor system under the operating conditions is obtained.Based on the simulation data,on the one hand,the article studies the high-efficiency interval distribution of the motor system under the corresponding operating conditions;on the other hand the article calculates the average efficiency according to the electric power and mechanical power of the motor system in the driving and generating state,and combines the efficiency MAP differences under different schemes to judge the economic performance of the different schemes.Through the performance matching optimization research method mentioned in this article,the development product cycle can be shortened,and the input positioning of the project in the early stage can be relatively accurate,thereby ensuring that the product can have strong market competitiveness after the completion of the product development,and can meet the needs of most models,which is conducive to subsequent market promotion.