电动汽车用内置式永磁同步电机的效率最优无差拍直接转矩控制研究

项目名称： 电动汽车用内置式永磁同步电机的效率最优无差拍直接转矩控制研究

项目编号： No.51477073

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 电工技术

项目作者： 张兴华

作者单位： 南京工业大学

项目金额： 80万元

中文摘要： 高性能的电机驱动系统及其控制技术是电动汽车研制的关键技术,对加速电动汽车的产业化进程有重要意义。本课题研究电动汽车用IPMSM的高效率快响应控制策略,通过建立IPMSM的动态离散化模型,研究基于无差拍控制和预测状态观测器的IPMSM直接转矩控制技术;将电机损耗模型和智能在线搜索方法相结合,研究IPMSM驱动系统的效率优化，提出IPMSM的效率最优无差拍直接转矩控制方法;通过研究高频电压信号注入时IPMSM的磁凸极效应,探索利用磁极凸性设计状态观测器的方法,提出无速度传感器的IPMSM效率最优无差拍直接转矩控制技术;在计及逆变器电压输出限制和数字系统采样与计算时滞的条件下,研究效率最优无差拍直接转矩控制的数字实现技术。在全面揭示IPMSM高效率快响应控制策略工作原理的基础上,给出IPMSM驱动系统数字实现方案,研制驱动控制器样机,为开发高性能的电动汽车电机驱动系统提供理论依据和技术支撑。

中文关键词： 内置式永磁同步电机；无差拍直接转矩控制；效率优化；状态观测器；电动汽车

英文摘要： High-performance motor driving system and its control strategy are the key technology for electric vehicle development, which is significatly important for accelerating the industrialization of electric vehicles. A novel high-efficiency and fast-response control strategy of interior permanent magnet synchronous motor (IPMSM) driving systems for electric vehicle applications are studied in this project. Firstly, by establishing the dynamic descrete model of IPMSM, a new-type direct torque control technique based on the deadbeat control and predictive state observer is investigated in details. And an on-line efficiency optimization approach which combines the loss model and intelligent optimization technology is proposed to increase the efficiency of the IPMSM driving system. Secondly, a flux and speed observer designed by employing high frequency injection technique, which makes use of the magnetic saliency, is explored. And a speed -senorless deadbeat direct torque control technique of IPMSM with optimizing efficiency is proposed. Taking into account the inverter output voltage limit as well as the sampling and calculating time delays of the discrete control systems, the digital implementation technology of the optimal efficiency direct torque control driving system is studied. Finally, by completely revealing the basic principle of IPMSM direct torque control system with optimal efficiency, a digital implementation scheme of the proposed driving system with the characteristics of high efficiency and fast response is given, and the digital controller prototype is developed as well, which will provide the theoretical and technical support for the development of high-performance electric vehicle driving systems.

英文关键词： Interior permanent magnet synchronous motor;deadbeat direct torque control;efficiency optimization;state observer;electric vehicle