电动车用高功率密度高效模块化多盘组合式永磁电机系统关键技术研究

项目名称： 电动车用高功率密度高效模块化多盘组合式永磁电机系统关键技术研究

项目编号： No.51277081

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 电工技术

项目作者： 杨凯

作者单位： 华中科技大学

项目金额： 82万元

中文摘要： 现有电动车用电机系统为满足基速下大转矩输出，极限加速时间等要求，以及适应车辆起动、加速、负荷爬坡、频繁起停等复杂工况，往往设计后备功率较大，全转速范围内工作效率低，导致电动车在能效和续驶里程方面难与燃油汽车相比。鉴于此，本项目提出一种新型模块化多盘组合式车用永磁电机系统，采用多盘式单元组合、扇-环混合式可换接绕组、转子双向斜极、特殊齿槽以及多单元PWM移相协同控制等新结构与技术，大大提升电机系统的功率密度和效率，改善转矩品质，提高电动车运行性能与续驶里程。项目重点研究其电磁与结构设计规律，电磁特性和参数的准确计算方法，三维电磁场数值计算及多物理场耦合分析，电机及控制系统瞬态仿真，多单元协调控制和最优效率控制策略等关键技术。构建这一新型电机系统设计优化与运行控制理论体系，研制工程样机和驱动控制装置，奠定实用基础。

中文关键词： 多盘式永磁电机；双向斜极技术；齿槽转矩；开绕组；磁电编码器

英文摘要： In order to satisfy the requirement of high torque output with rated speed and short acceleration time, and to adapt to the complex work conditions such as starting, accelerating, climbing and frequent start-stop, etc., the existing driving system for electric vehicles is usually designed with high power reserve, while the efficiency is low in entire speed range. Therefore, the energy efficiency and endurance mileage of electric vehicles are inferior compared to traditional fuel vehicle. In view of above, the applicant proposed a modularization combined multi-disc permanent magnet motor system for electric vehicles. The efficiency and power density can be greatly improved by adopting novel structures and new technologies, such as combined multi-disc motor unit, fan-ring hybrid switching winding, two-way skewed rotor pole, and multi-unit cooperative control with PWM phase-shifting technique. This project will focus on the electromagnetic structure design rule of the motor, discuss the accurate calculation method of electromagnetic properties and parameters, carry on 3-D electromagnetic field analysis and multi-field coupling analysis, implement transient simulation of motor system, and explore the multi-unit cooperative control and optimal efficiency control strategies. The aim is to construct a theoretical syste

英文关键词： Multi - disc permanent magnet motor；two-way skewed rotor pole；Cogging torque；Open winding；Magnetic Encoder