The research of the thesis is carried out around the development of hybrid exciting permanent magnet generator ( hepmg ) and its control system . five parts are included : first of all , the configuration was selected after draw an integrated comparison of among existent structure under appropriate condition . then the selected configuration is ameliorated 本文围绕混合励磁永磁发电机( hepmg )系统的设计研究展开，所做工作主要包括以下几部分：首先，在可比条件下，对各种结构的混合励磁永磁发电机进行了综合分析比较，得出适合于发电机的结构，并对原有结构加以改进。
According to the study on permanent magnet ( pm ) generator and its control system in vehicle application , this dissertation is devoted to the study on run characteristics , design method and control system of pm generator for autos . at the same time , the future power supply model of generator for autos is given 本文结合“车用永磁发电机及其控制系统的研究”课题，对宽转速车用永磁发电机的工作特点、设计方法、稳压控制以及未来汽车供电系统的发展趋势进行了详细的分析研究，取得了一些具有工程实用价值的成果。
In the dissertation , a novel hybrid excitation constant voltage synchronous generator is adopted to improve the system performance , which takes the advantages of both electrical excitation and permanent magnet machines . a parted configuration is presented in order to design the structure of the generator . the adaptive digital adjustment is settled in principle using the single chip microcomputer 80c31 as the control core of the voltage regulator and adopting the proportion - integral - differential control as the control arithmetic , then a sample is made 论文对同步发电机的工作原理、性能特点、电机本体以及电压调节器的硬件和软件设计进行了研究，针对稀土永磁同步发电机变载、变转速情况下输出电压不可调的不足之处，采用一种新颖的电机型式? ?自适应复合励磁恒压同步发电机，综合了永磁发电机和电励磁发电机的优点，提出一种磁路分开的结构进行电机本体的设计，并选用单片机80c31作为电压调节器的控制核心，比例?积分?微分控制( pid )作为其控制算法，从原理上较好地解决了其电压的自动数字调节，并试制了一台样机。
Three parts are included as follows : first of all , the basic circuit equation of radial pm generator for autos is given . the effect of reciprocity of pm and winding ' s magnetic force upon winding ' s inductance and current upon magnetic circuit saturation are analysed . according to these , we can obtain optimized design 首先，从本课题采用的径向式结构的三相永磁同步发电机的物理模型出发，得出其基本电路方程式，并分析了永磁磁动势与绕组磁动势间相对位置的不同而对绕组电感不同的影响，相电流对磁路饱和效应的影响，为车用永磁发电机的优化设计提供了理论依据。
Secondly , the math model of the high - speed pm generator with a shielding is deduced . the method of how to analyze the electromagnetic field of the generator is introduced . and with the help of a kind of fem software , the parameters of a model machine are calculated and simulated , including the electromagnetic field , no - load voltage , single - side magnetic force , loaded torque and axial force 其次，对转子带防护罩的高速永磁发电机数学模型进行了推导，介绍了利用有限元法对电机磁场进行分析的方法，并运用有限元软件对一台样机的参数进行了仿真，包括电机磁场分析、空载电压波形、单边磁拉力、负载转矩以及轴向力等方面的内容。
