电梯门机用无刷直流电机调速系统设计与应用

针对电梯门机的使用特点,研制出专用的稀土永磁无刷直流电机调速系统,实现了门宽的自学习、运行参数的修改及按给定曲线调速运行等功能。文中介绍了该无刷直流电机的设计和控制方法,通过样机的试验和应用效果良好。     

Multistage axial-flux PM machine for wheel direct drive

The design of direct-drive wheel motors must comply with diameter restrictions due to housing the motor in a wheel rim and allow the achievement of very high torque density and overload capability. Slotless axial-flux permanent magnet machines (AFPMs) prove to be the best candidate for application in electric vehicles as direct-drive wheel motors, as in comparison with conventional machines they allow designs with higher compactness, lightness and efficiency. The paper presents a newly conceived AFPM which has a multistage structure and a water-cooled ironless stator. In the proposed new topology of the machine, the space formerly occupied by the toroidal core becomes a water duct, which removes heat directly from the interior surface of the stator winding. The high efficiency of the machine cooling arrangement allows long-term 100% overload operation and great reduction of the machine weight. The multistage structure of the machine is suited to overcome the restriction on the machine diameter and meet the torque required at the wheel shaft. The paper gives guidelines for the design of a multistage AFPM with water-cooled ironless stator, and describes characteristics of a two-stage prototype machine rated 215 Nm, 1100 RPM     

基于MATLAB平台的低速永磁同步电动机设计

介绍了用于电梯无齿轮曳引驱动系统的低速永磁同步电动机的设计特点和抑制低速脉动转矩的设计措施,提出了建立在MATLAB平台上的永磁同步电动机计算机辅助设计程序的编程方法,给出了样机试制和试验的结果,证明了设计思想与方法的正衙陀。     

Application of Direct-Drive Wheel Motor for Fuel Cell Electric and Hybrid Electric Vehicle Propulsion System

This paper presents a gearless wheel motor drive system specifically designed for fuel cell electric and hybrid electric vehicle propulsion application. The system includes a liquid-cooled axial flux permanent-magnet machine designed to meet the direct-drive requirements. The machine design implements techniques to increase the machine inductance in order to improve machine constant power range and high-speed efficiency. The implemented technique reduces machine spin loss to further improve efficiency. The machine design also optimizes the placement of magnets in the rotor to reduce cogging and ripple torque. An original cooling system arrangement based on the use of high thermal conductivity epoxy joining machine stator and liquid-cooled aluminum casing allows the very effective removal of machine power loss. Design details and experimental results are presented.     

电动汽车用新型轴向磁场车轮电机的设计

车轮电机由于取消了齿轮和机械差动器,减小了驱动链的组件,因而减小了整个驱动链的重量,提高整个系统的可靠性和效率。该文对一种新型的应用于电动车辆驱动的直驱轮用轴向磁场永磁同步电动机的进行了设计。电机的电枢铁心由各个在磁路上没有联系的定子极组成,省去了定子铁心轭部,电机结构简单易制造。采用等效磁路法对电机进行了电磁设计,并用有限元法进行了验证。设计和仿真结果证明所提议的结构是可行的。     

基于磁热耦合法的提花喷气织机直驱永磁电机设计

针对传统异步电机驱动提花喷气织机传动链冗长、系统效率低、噪音大等问题,提出一种永磁电机直驱系统。为保证布匹质量,采用遗传算法优化转子偏心距和极弧系数,削弱电机转矩脉动。由于提花喷气织机负载不断变化,持续影响电机磁热性能,提出一种瞬态磁热双向耦合逐次逼近稳态温升的计算方法。对比分析了不同功率点下电机温升分布规律及电磁性能,得到最佳功率点。最后研制了一台3.1 kW的样机并进行试验,试验数据与仿真结果基本吻合,验证了所提的采用瞬态磁热双向耦合逐次逼近稳态温升进而选取最佳功率点的合理性,为提花喷气织机直驱永磁电机设计提供了依据。     

郭鑫华王秀芝许镇琳蒋琪

文章针对全平衡垂直提升式升船机提出几种交流调速控制方案,讨论比较各方案的优劣,并以三峡升船机物理模型为基础进行了试验研究验证,以供原型机设计参考,具有实用价值.     

电梯拖动用永磁无刷直流电动机的四象限运行控制

按照电梯拖动的使用要求，研制出具有四象限运行功能的稀土永磁无刷直流电动机控制系统。介绍了该控制系统的构成特点和控制方法，给出了系统框图，并进行了四象限控制原理分析。通过样机的试验和应用，验证了控制方法的合理性。     

Low-cost compact permanent magnet machine for adjustable-speed pumpapplication

The variable-speed driven pump can result in significant energy conservation where reduced flow rates are required for long periods of time. In regard to adjustable-speed pump drives, one major contribution of this paper is the demonstration that a permanent magnet (PM) motor based on the slotless axial-flux permanent magnet machine (AFPM) topology can be a suitable candidate to advantageously compete with the induction motor for such a low-cost drive application. For the purpose of a cost comparison, the paper discusses design and construction of a prototype machine which has been conceived to replace a 1.2 HP induction motor being used in a standard adjustable-speed pump drive. Results taken from laboratory tests of the prototype machine are reported, together with an assessment of the machine manufacturing cost     

初级永磁型游标直线电机绕组连接及其电磁特性比较

初级永磁型游标直线(LPPMV)电机具有低速、大推力输出特性,特别适用于直线直驱系统。设计合理的绕组连接方式可有效改善电机性能。首先根据电机的运行原理,针对一台6/2极LPPMV电机提出了4种不同的绕组连接方式;其次通过有限元法,比较了LPPMV电机在不同绕组连接方式下的特性,包括空载感应电动势、电感,并在相同铜耗条件下计算了绕组的总质量、电枢电流、推力、铁心磁通密度以及铁耗等,以此得到了不同绕组连接方式下电机的运行效率;最后折中选择了一种绕组连接方式,制造了样机,并通过实验验证了电机的性能。     

Comparison of Linear Switched Reluctance Machines for Vertical Propulsion Application: Analysis, Design, and Experimental Correlation

This paper presents the comparison of four linear switched reluctance machines (LSRMs) as possible candidates for application in vertical elevators. Linear induction and linear synchronous machines have been presented and experimentally tested in vertical elevators. In this paper, four longitudinal LSRM configurations are presented and designed to operate as propulsion actuators in a vertical elevator prototype. Two of the four configurations have been presented earlier in horizontal propulsion experiments, and a third one has been proposed for application in vertical elevators. All four LSRMs are designed for similar static force profiles to allow for their comparison. The designed LSRM configurations are compared by using finite-element analysis and dynamic control simulations. The stator, translator, and copper winding weight and dimensions, footprint area, active material weight, normal forces and payload capabilities for all four configurations are contrasted. The configuration with the highest payload capability is chosen for implementation in an experimental prototype. The prototype vertical elevator is 1.27 m tall with a 1-ft-tall elevator vehicle with no counterweights and uses two LSRM setups on each side. The experimental correlation of propulsion force and inductance is presented to validate the theoretical design method used in this research.      

无轴承永磁同步电动机的原理及实现

无轴承永磁同步电动机是将无轴承技术运用到永磁同步电动机上的新型无轴承电动机.本文阐述了永磁同步电动机无轴承技术的工作原理,设计和实现了该电动机基于LF2407A数字控制的硬件实验平台和软件系统.通过对整个无轴承永磁同步电动机系统的实验调试,成功实现了无轴承永磁同步电动机转轴的稳定悬浮.     

应用直线电机驱动的冲压机

介绍了用直线电机直接驱动冲压机工作的基本原理、结构、性能以及它的控制方法。和传统式机械冲压机相比,它具有结构简单、体积小、重量轻、制造周期短、成本低、控制方便、噪声低和节能等优点。目前已研究完成了５０ｋＮ以下的科研样机,通过了省级鉴定并获得了多项专利,现已投入小批量生产,效益显著。１００ｋＮ以上的科研样机作为省重点科技攻关项目正在研究之中     

Performance of PM-assisted synchronous reluctance motor forhigh-efficiency and wide constant-power operation

This paper examines the design and the performances of a permanent-magnet assisted synchronous reluctance motor (PMASRM) for wide constant-power operation. The effects of properly adding magnets into the rotor of a synchronous reluctance motor are examined by several experimental results and analyses on the prototype machines. The proposed machine can offer a large constant-power speed range, high-efficiency and high-power-factor operation in comparison to the complete synchronous reluctance motor. It was shown that the problems such as the decrease of efficiency at light-loads and the uncontrolled generator mode operation, which occur in the high-speed flux-weakening operation of the conventional PM motor drives, can be eliminated in the PM-assisted synchronous reluctance motor     

低速永磁同步电动机的设计研究

详细介绍和分析了用于电梯的无齿轮低速永磁同步电动机（以下简称PMSM）产生转矩波动的原因和消除转矩波动的种种对策。样机已经装梯试验，试验结果证明了设计思想的正确性。     

直线电动机驱动冲压机的研究与应用

介绍了用直线电机直接驱动冲压机工作的基本原理、结构、性能以及它的检测与控制方法。和传统式机械冲压机相比, 直线电机驱动的冲压机（ 以下简称电磁冲压机） 具有结构简单、体积小、重量轻、制造周期短、成本低、控制方便、噪音低和省能等优点。目前已研究完成了５０ｋＮ 以下的科研样机, 通过了省级鉴定并获得了多项专利, 现已投入小批量生产, 效果显著。１００ｋＮ 以上的科研样机作为省重点科技攻关项目正在研究之中     

电动汽车用永磁同步电动机场路结合设计计算

本文针对电动汽车驱动的特点 ,对永磁同步电动机的设计计算进行了研究 ,提出永磁同步电动机的场路结合设计计算方法。设计计算结果同试验结果的对比表明 ,本文提出的场路结合计算方法具有较高的计算精度。     

Design and Efficiency Evaluation of a High‐Efficiency Induction Motor for Railway Traction

In commuter trains, a large portion of the energy consumption is a result of losses from traction motors. Therefore, highly efficient traction motors would be very effective for saving energy. We developed an induction motor with a high efficiency of 95.5%. This paper presents the design and an efficiency evaluation of a prototype machine.     

Design and Construction of a Brushless Permanent Magnet Servomotor for Direct-Drive Application

The feasibility and design of permanent magnet servomotors for direct-drive application at a power level near 10 kW at 270 r/min are investigated. Such applications imply low-speed machines with a great amount of iron and permanent magnet material. The compromise between the specific energy and the cost of magnets is one of the usual guides for designing such motors. The performance of an actual prototype shows that the use of low-cost ferrite material associated with a proper flux-concentration structure of a magnetic circuit is especially interesting at this power level. The design procedure is presented with a prediction of the performance based on field calculations, which can be compared with experimental results of generator operation. The motor can be used in several brushless configurations. An evaluation of the performance, in each case, according to the kind of static converter and control strategy is presented. Several improved models and computer simulations are used. The adaptation of the rotor damper circuits to the supply is also discussed.     

Unique surface-wound brushless servo with improved torque ripplecharacteristics

A servo system based on a surface-wound slotless brushless servo motor to achieve extremely low torque ripple is described. Torque ripple measurement and specification are discussed; the design was a design made feasible by the introduction of neodymium-iron-boron (Nd-FeB) magnet material. System torque ripple data of less than 1.5% are presented along with the generated back electromotive force of the slotless motor design. It is concluded that with this design brushless servo systems can now be used for high-performance direct-drive grinder and coating applications