多电动机的

This thesis has established the mathematical model of n-phase PMSM after thorough analysis of PMSM structure and running mode, and then put forward the vector transform method, which is as the base of vector control.

建立完善的多相化永磁同步电动机及控制系统的数学模型和分析方法是系统研究和实现的重要技术保证。

The application of motor has spread all kinds of fields of national economy and people's daily life as the main mechanic-electronic energy conversion device for a century or more.

一个多世纪以来，电动机作为最主要的机电能量转换装置，其应用范围已遍及国民经济的各个领域和人们的日常生活。

High temperature blankets series; 5, rubber, polyurethane materials of high strength steel wire synchronous belt; 6, knitting, needle corrugated board conveyor belt; 7, V-belt, round belt, wide-band, multi-groove belt, transmission belt, steel buckle, etc.; 8, stainless steel plate chain; steel plate chain, modular Nets plate; 9, professional custom-made automated production lines; 10, import bearings, chain, motor, deceleration machine, inverter and so on; 11 , industrial fabrics, activated carbon fiber, needle filter materials, high temperature blankets, sealing materials.

耐高温的毛毡系列； 5、橡胶、聚氨酯高强钢丝材质的同步齿形带； 6、编织、针刺瓦楞纸板输送带； 7、三角带、圆带、广角带、多沟带、变速带、钢扣等； 8、不锈钢平板链；塑钢平板链、模块化网板；9、专业订做自动化生产流水线； 10、进口轴承、链条、电动机、减速机、变频器等； 11、工业用布、活性炭纤维、针刺过滤材料、耐高温毛毡、密封材料。

The content and conclusions are significant to the study and design of multiphase PMSM propulsion system.

本文的研究成果和结论对多相永磁同步电动机推进系统的研究和设计具有理论指导意义。

An apparatus and method for supplying a polyphase alternating current motor (15) with driving voltages.

本发明提供一种电力变换设备和方法及汽车。一种用于向多相交流电动机提供驱动电压的设备和方法。

Combination machine tools of future development will be more adopts stepless motor and transmission of ball screw, etc, to simplify structure and shorten the production beat, Using digital control system and spindle box, jig automatic replacement system, in order to improve the process adjustability, Flexible manufacturing systems and into.

组合机床未来的发展将更多的采用调速电动机和滚珠丝杠等传动，以简化结构、缩短生产节拍；采用数字控制系统和主轴箱、夹具自动更换系统，以提高工艺可调性；以及纳入柔性制造系统等。

The invention relates to an electric machine (10) which can be operated as a motor or a generator. Said machine comprises a rotor (26a, 26b) rotatably mounted in a housing (12), a rotor shaft (24) which extends beyond the housing (12) and a plurality of electromagnet components (28) that are statically arranged in the housing at a distance from the axis of rotation of the rotor in evenly distributed angular distances. Said electromagnet components have each a wire-wound coil (30) consisting of a coil core (32) which carries one or more conductors.

本发明涉及一种可作为电动机或发电机工作的电机(10)，它包括一个可旋转地安装在外壳(12)内带一根伸出外壳(12)的转子轴(24)的转子(26a、26b)，以及包括多个离转子旋转轴线一定距离处按均匀的角向间距位置固定地布置在外壳内并各有一个支承着由一根或多根导线组成的线圈绕组(30)的线圈芯(32)的电磁构件(28)。

The frequency changer Surpasses the voltage fail safe is the frequencychanger middle DC voltage after achieved the degree of hazard adoptsprotective measures, this is a big flaw which the frequency changerdesigns, causes this breakdown reason in the frequency changer actualmovement many, may adopt the measure are also more, when processesthis kind of breakdown must analyze the clear breakdown reason, haspointed takes the corresponding measure to process.

摘 要：摘要变频器过电压故障保护是变频器中间直流电压达到危险程度后采取的保护措施，这是变频器设计上的一大缺陷，在变频器实际运行中引起此故障的原因较多，可以采取的措施也较多，在处理此类故障时要分析清楚故障原因，有针对性的采取相应的措施去处理。关键词变频器电动机整流 Abstract ：The frequenc。。

In order to get suitable twist,draft ratio and good shaping rove during roving engineering of wool spinning,it puts forward a plan to control system of multi-motor driving for twisting roving machine in accordance with the roving feature of complex mechanical driving system.

为了保证纱线在粗纱工序中获得适当牵伸与加捻，并且卷绕成形良好，针对有捻毛纺粗纱机传动系统复杂的特点，由单片机、变频器、电动机和速度传感器组成了粗纱机多电机传动控制系统。

With the absence of the exciting current losses, the power density and the efficiency have been increased correspondingly.

因而它成为近几年研究较多并在各个领域中应用越来越广泛的一种电动机。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。