And the subroutine is developed to add the periodic condition in the commercial 3d fem software . 3d electromagnetic field analysis is done to analyze the magnetic flux distribution in the tfpm . base on the field analysis , the mathematical model is given 采用简化的三维电磁场计算方法对横向磁通永磁电机内部磁通分布进行了研究,计算了各部分的磁通密度分布和漏磁通的走向,得到了电机的空载漏磁系数及空载反电动势以及主要的漏磁通分量。
Company development and production of products mainly include : industrial control and monitoring , dc converter , exchange converter , permanent magnet motor , power generation electronic control system , various industrial control module , railway traction systems and urban transport systems 公司研发及生产的产品主要有：工业控制及监测、直流变流器、交流变流器、永磁电机、电力发电电控系统、各种工业控制模块、铁路牵引系统和城市交通系统等。
The company ' s products mainly are flp transformer station , dry transformer , magneto motor , electric locomotive , frequency inverter , mining switch , motor , expandable conveyor , and we also provide service of repairing and maintenance work on transformers and sorts of mining equipment 简介：公司产品主要以矿用隔爆型移动变电站、干式变压器、永磁电机、电机车、变频器、矿用电器开关、电机、可伸缩带式运输机为主，并承揽修理变压器、各类矿用设备的维修。
The controller includes two control loops which are outer speed loop ( variable parameter pi adjustment ) and inner current loop ( single - chop current delta - control ) . in order to improve system performances , design of digital control system based on dsp is presented . the proportional parameter and integral parameter can be obtained through the design 整个系统采用变pi参数转速调节(外环)与单斩电流滞环调节(内环)相结合的双闭环控制方式,为了得到既快速又稳定的恒速系统,本文还给出了基于dsp的双凸极永磁电机数字控制系统的设计方案,通过此设计方案可以得到转速环的比例参数kp和积分参数ki的参考值。
Based on comparison of several motor candidates , doubly salient permanent magnet ( dspm ) motor is a good choice for it ’ s outstanding performance . similar to conventional drive system , dspm brushless dc motor ( dspm - bldcm ) is composed of dspm motor and it ’ s controller . the controller is made up of three - phase full - bridge inverter , driver , dsp control unit and etc . for high power system , every switch of three - phase inverter is actually made up of four mosfets in parallel 在充分考虑国内外不同的液压泵电动机的基础上,本文选用了双凸极永磁电机作为整个系统的电机本体,并配以电动机控制器(控制器包括三相桥式功率变换器、驱动电路、 dsp主控单元、电流采样及预处理和位置采样及预处理等主要部分)组成整个液压泵电动机系统。
The relation between the dimensions and performance studied in this paper . the orientation to obtain better performance is given . from the electromagnetic field calculation , it finds out that the flux leakage in the side surface is large . under this direction , a additional magnetic motive force is given against the flux leakage 通过对横向磁通永磁电机的电磁场分析计算,发现横向磁通永磁电机转子端面漏磁通占漏磁通比例很大,在计算结果的指导下采取了在漏磁通磁路中提供一个与漏磁磁势相反的磁势的方法来降低漏磁通取得了预期效果。
With the development of modern permanent magnet ( pm ) machine to high speed , high efficiency , high power density and micromation , the limitation of traditional rare earth pm machine is exhibited , such as higher ripple - free torque , higher losses , lower open - circuit magnetic field , etc . halbach motor , a new type permanent magnet motor , first proposed by american scholar klause halbach , has been studied very widely . halbach motor has higher magnetic field , usually as 1 . 4 times as that of traditional rare earth permanent magnet machine , which attributes to higher power density Halbach永磁电机是由美国学者klausehalbach提出后一直被广泛研究的一种新型永磁电机，和普通永磁电机相比其优越性有：气隙磁密比一般永磁电机可增大40 ，从而可有效提高电机的功率密度；固有的正弦分布磁场，可为电机设计和加工带来便利，降低成本；自屏蔽效应，转子可不再需要为磁路提供闭合回路，这为转子的选材提供了较大的空间。
Focused on the innovation and reconstruction of the critical technology , the project is also based on renovation and summarization about the same kind of products . because of using the special mcu to realize the pid control method of motor drive , selecting electrical current track tache to finish the control of motor working electrical current and adopting the double layers pcb , the project has the favorable compatibility and expansibility . at the same time , adopting the mature frame and technology in power and electron , the system has the new breakthrough and sublimation in reliability , power , applied field , control method , and so on , reaching the one - up level inland 该项目着眼于关键技术的创新和改造，是对同类品产研制的总结和创新，由于利用高性能专用单片机实现电机拖动的pi控制运算，选择硬件电流跟踪环实现对电机工作电流的闭环控制，采用双层印刷版工艺，使其具备良好的兼容性与可扩展性，同时电力电子部分采用成熟的结构和技术，因此该系统在可靠性、功率、适用范围、控制方法等方面都有新的突破和升华，达到国内领先水平；由于采用稀土永磁电机，具有很明显的节能效果，因此本项目属于高效节能技术并具备产业化条件，它的成功将形成显著的经济效益和社会效益。
This dissertation is devoted to the study on permanent magnet synchronous motor ( pmsm ) drive system in electric vehicle ( ev ) application aided by the state " 863 plan " and the science and technology items of liaoning province . four parts are included as follows : first of all , an efficiency - optimization control strategy for pmsm system used in ev is presented in order to extend road haul per charge 在国家863计划“九五”重大项目“钕铁硼电机应用产品开发” 、辽宁省科学技术计划项目“高性能钕铁硼永磁电机的研制”及沈阳市“十五”科技攻关项目资助下，本文研究工作围绕电动汽车用永磁同步电动机( pmsm )传动控制系统展开，研究内容分为以下四个部分：首先，为提高电动汽车一次充电续行里程，提出电动汽车用pmsm系统的效率优化控制策略。
According to the development of the 2 - d electromagnetic field software platform of pm electrical machines electromagnetic field computation , this dissertation is devoted to do research on modeling , electromagnetic field revolving computation , module of scheduler , and the graphics technology of electromagnetic field . four parts are included as follows : first of all , a model base and a universal method of modelling for pm electrical machines electromagnetic field are given 本文结合永磁电机二维电磁场软件平台的开发，针对永磁电机电磁场计算的特点，对永磁电机电磁场计算中的建模、磁场旋转计算等问题进行了详细研究，并运用计算机技术对程序的调度、计算结果的图形显示及数据存储等问题进行了分析。
