同步磁阻电机作为机床主轴驱动的研究

对现有的交流电机主轴驱动系统进行了概述,提出可用同步磁阻电机作为机床的主轴驱动,并且比较了各种电机主轴驱动的优缺点,指出同步磁阻电机的优势。分析了同步磁阻电机作为主轴驱动的控制方法以及弱磁控制方法,并仿真比较其与永磁同步电机的转矩特性,阐明同步磁阻电机是机床主轴驱动的理想机种。     

《数控机床电气控制》讲座 第五章 数控机床主轴控制系统

5.3数控机床变频调速主轴和伺服主轴的工作原理主轴驱动系统包括主轴驱动器和主轴电动机。数控机床主轴的无级调速则是由主轴驱动器完成。主轴驱动系统分为直流驱动系统和交流驱动系统,目前数控机床的主轴驱动多采用交流主轴驱动系统即交流主轴电动机配备变频器或主轴伺服驱动器控制的方式。     

国外电动汽车电机驱动系统发展评述

】驱动电机控制系统是电动汽车的关键技术之一，在世界各国进行了深入广泛的研究。文中对电动汽车的几种交流驱动系统（永磁同步电机变频调速系统、感应电机变频调速系统、开关磁阻电机调速系统）进行了比较，指出其优缺点，对几种交流驱动系统的新发展进行了评述     

Quad QSP-2型贴片机主轴运动控制系统的改造

针对Quad QSP-2型贴片机主轴的控制和驱动部分存在的缺点,在原运动控制方式基础上,将控制器改为工控机加运动控制卡的高性能控制器,并保留了原有的机械、电机及电机驱动卡部分;搭建了相关的硬件系统,以Visual C++软件为开发平台,编写了底层驱动与PID控制程序,从而完成对Quad QSP-2型贴片机主轴运动控制系统的改造设计。调试结果表明系统运行稳定、重复性好。     

图书

先进电气驱动的分析、建模与控制 本书内容包括直流电机、交流同步电机、交流异步电机和开关磁阻电机的电机驱动建模与控制,同时还包括理想旋转变压器、通用磁场定向等概念,并立足现代电机驱动系统常用的驱动控制技术,注重理论性、系统性和先进性的有机统一,结合典型应用实例,完整体展现各种电机驱动控制技术的结构和控制方式。     

电动汽车动力驱动系统的研究现状和应用前景(2)

3.2　交流电机驱动系统随着电力电子技术、微电子技术、现代控制理论和计算机技术的迅猛发展及其对电机技术的不断渗透 ,电机技术的更新和创造也日新月异 ,特别是 2 0世纪 80年代以来 ,交流驱动技术以其优势逐步取代直流驱动技术成为国内外发展最为迅速的高科技实用技术之一。它的进步给了交流电机以良好的发展契机和高的起点 ;它的应用使传统结构的单体交流电机转变成机电一体化和集成化 ,高效、高性能、高可靠的交流电机驱动系统 ,因而在电动汽车领域迅速获得了极其广泛地应用。交流电机驱动系统中的驱动控制器由逆变器和控制器两部分组成…     

提高电动车性能的交流驱动系统

“日立”公司采用铁道车辆和工业用交流电动机逆变器控制技术，开发了以小型、轻量、高效的感应电机为主的电动车交流驱动系统。现介绍如下：1电动车用交流驱动系统电动车驱动系统以采用直流并激电机组成的居多。“日立”在开发过程中对各种系统的优劣进行了比较（见表1）在综合评价的基础上，采用了能实现小型、轻量、高速和结构牢靠的交流感应电机组成的系统。表2示出逆变器中采用不同电力电子器件的比较。对驱动电流、导通电压、动作速度等数据综合评价后，“日立”公司认为在电动车逆变器中以采用IGBT（绝缘栅双结型晶体管）最好。图1…     

三菱交流伺服主轴驱动系统在数控加工中心上的应用

文章将智能化交流伺服主轴驱动系统应用于数控加工中心，分析主轴驱动系统的原理，给出容量计算及型号选择方法，讨论主轴驱动系统与CNC之间的信号联系与电路连接方法，研究主轴的参数设置，使高性能主轴驱动系统在加工中心上得到合理使用，以满足数控加工的工艺和精度要求。     

浅谈数控机床电主轴的发展趋势

数控机床主轴控制是数控技术的核心之一,近年来,主轴的性能进一步向高转速.高精度、高刚度方向发展.电主轴正是基于以上要求而生的主轴新技术。本文简述了国内外电主轴发展现况.并且介绍.比较了各种电机作为电主轴驱动的优劣。     

中频电动机

一、概述中频电动机运行在200～10000赫芝的交流电动机与其他类型的高速电机或主轴相比,具有体积小、单位输出功率大、振动小、转速稳定、噪声小并可变频变速等优点。它可用高速钻孔、精密磨削、气流纺纱、激光通讯、测距、水下摄影、驱动分子式真空泵高速叶轮、导航设备和各种驱动装置     

基于交流异步电动机矢量控制的高性能主轴驱动系统

文章提出了一种基于交流异步电动机矢量控制的高性能主轴驱动系统，详尽地介绍了系统硬件结构、控制算法及软件设计流程。仿真和实验结果表明，该系统具有很高的控制精度和良好的动态性能。     

AC motor drive systems with a reduced-switch-count converter

This paper presents two reduced-switch-count AC drive systems. One of the configurations was conceived to operate with a two-phase motor and the other one with a three-phase motor. The drive systems provide both bidirectional power flow and power factor control. Pulsewidth modulation techniques for the converter control are discussed. Experimental results are presented.     

Geared versus gearless adjustable-speed drive systems in the pulpand paper industry

The advantages, disadvantages, and system considerations of DC and AC adjustable-speed drive systems are examined. The steps that must be taken to evaluate the economics of a direct drive are identified. Much of the discussion focuses on motor operation while considering total system operation. AC versus DC systems are not compared-only geared versus gearless are compared for each technology. It is found that gearless DC drives offer many advantages over the common geared systems and are widely applicable in the pulp and paper industry. Gearless AC drives also offer advantages over geared systems, but disadvantages do however exist. Direct-drive AC systems are found to be more limited in their applicability     

On the evolution of AC machines for spindle drive applications

In the field of AC spindle drives, the induction motor is widely used. Synchronous solutions (reluctance, interior permanent magnets) are often suggested to overcome some drawbacks of the induction motor. The different options are compared by considering the machine torque-density and the inverter power size needed for a given constant-power speed range. It is shown that an axially laminated reluctance motor gives more torque density than the induction motor but requires nearly the same inverter size. By adding a proper quantity of permanent magnets, the inverter size can be greatly reduced. A comprehensive discussion of this subject is given. The goal is to find a design solution that is optimal for the whole drive     

A high-speed vector-controlled spindle motor drive with closedtransition between with encoder control and without encoder control

A 40000-r/min vector-controlled induction motor drive is introduced. The vector control of induction motors has been widely accepted in spindle drives of machine tools where they replace conventional DC motors because of the low maintenance requirements. Another important feature of the AC spindle drive is its high-speed capability. The magnetic encoder is most widely used as the speed detector because it is suited for use in an adverse environment. However, the magnetic encoder with high resolution and a high S/N ratio loses the output pulses at extremely high speed. In the drive system introduced, the conventional vector control is used in the low-speed range, and the vector control without the encoder is used in the high-speed range. Close transition between two modes is made without interrupting the operation     

Filtering techniques to minimize the effect of long motor leads onPWM inverter-fed AC motor drive systems

In this paper, filtering techniques are investigated to reduce the motor terminal overvoltage, ringing, and dv/dt in inverter-fed AC motor drive systems where long leads are required. Analysis is presented to show that the distributed LC of a cable and the pulse-width modulated (PWM) inverter switching action lead to motor terminal voltage reflections and ringing that stress the turn insulation and contribute to bearing currents. First- and second-order shunt filter designs are analyzed and compared. Detailed design equations to match the filter impedance to the cable surge impedance and to determine the filter component values are presented. It is demonstrated that a first-order shunt filter connected at the motor terminals significantly reduces the overvoltage stress and ringing, and also lowers the dv/dt of the PWM switching pulse. Simulation and experimental results are presented to verify the proposed filter designs for 50-ft and 100-ft cable lengths for 460-V PWM insulated gate bipolar transistor (IGBT) AC motor drive systems     

RFNN controlled sensorless induction spindle motor drive

A sensorless induction spindle motor drive using synchronous PWM (SPWM) and dead-time compensator with recurrent fuzzy-neural network (RFNN) speed controller is proposed in this study for advanced spindle motor applications. First, the operating principles of a new type SPWM technique and the circuit of dead-time compensator using field-programmable gate arrays (FPGA) are described. Then, a speed observer based on a modified Luenberger observer is adopted to estimate the rotor speed. Moreover, since the control characteristics and motor parameters for a high-speed induction spindle motor drive are time-varying, an RFNN speed controller is developed to reduce the influence of parameter uncertainties and external disturbances. In addition, the RFNN is trained on-line using a delta adaptation law. Finally, the performance of the proposed sensorless induction spindle motor drive system is demonstrated using some simulated and experimental results.     

矿山电机控制系统原理

矿山风机中使用的交流电机驱动,其消耗与浪费非常严重。针对DTC和VC控制系统的现状及实用化技术提出了一些看法。