功能复用型可变磁通磁阻电机集成驱动-充电系统及控制方法研究

针对新能源汽车驱动系统轻量化，本项目提出基于可变磁通磁阻电机的功能复用型集成驱动系统，用一套系统实现电机驱动、交流/直流充电功能，从而实现系统的高度集成。通过对功能复用型可变磁通磁阻电机集成驱动系统拓扑结构和控制策略的研究，突破集成驱动系统宽范围调速和大功率、高可靠性充电等关键技术。主要研究内容包括：基于通过零序电流实现对虚拟励磁电流的控制方法，提出利用双逆变器实现电机的宽范围调速；研究集成驱动系统在交/直流充电模式下，磁场削弱控制机理及低振动、噪声控制策略；分析功能复用型集成驱动系统在驱动与充电模式下的系统损耗及效率优化；提出集成驱动系统的可靠性分析及优化设计方法。开展基于可变磁能磁阻电机的功能复用电机集成驱动系统的拓扑结构及控制具有非常重要的意义，对我国在新能源汽车轻量化及集成化的电机驱动系统领域的发展有重要的理论意义和应用价值，促进我国在相关领域的技术推广。

In order to reduce the weight of electric vehicles and hybrid electric vehicles, an integrated drive system for the novel variable flux reluctance machine is proposed in this project to realize the motor drive, AC/DC and DC/DC charging. Thus, based on the variable flux reluctance machine the topologies of a multi-functional integrated drive system will be investigated firstly. The control strategies for the developed integrated drive system will also be proposed. The main research contents are summarized as follows: By utilizing the zero-sequence current as of the excitation of variable flux reluctance machine, the dual three-phase inverter will be applied for the wide-speed range control; Investigation of AC/DC, DC/DC charging of using the integrated drive system will also be carried out together with the vibration/ noise reduction by canceling the magnetization field in the motor; In order to improve the efficiency, the losses in the motor and inverter will also be analyzed in the integrated drive system; Furthermore, in the project, the reliability and optimized design approach will be summarized for the further applications. The idea of using variable flux reluctance machine in the integrated drive system can provide the theoretical significance and applications in the electrical vehicles and hybrid electric vehicles. Hence, the technology can also accelerate the application of electric vehicles.