由IBM—PC直接控制电流跟踪型逆变器及其矢量控制系统

本文介绍用８０３８６ＩＢＭ－ＰＣ系统微机直接控制电流跟踪型逆变器及其矢量控制系统的方法。还详细介绍了由并行打印机口作接口提供系统控制的全部数据与控制信号的方法，以及由机内各种资源实现的控制。这种方法与其它类型的微机控制相比，硬件口简便，软件晚皇诊断与调试，特别适宜于各类交流调速系统控制方式的开发与研究。     

一种新型的电流跟踪型SPWM逆变器

本文论述了一种新型的，具有很高开关频率锁定的，三相淀环非线笥控制电流跟踪型ＳＰＷＭ逆变器。功率开关采用新型场控功率半导体器件ＩＧＢＴ，其开关频率可达２０ｋＨｚ．文中讨论了这种逆变器的控制原理和控制特性，以及数学描述。理论分析和驱动电机的运行结果表明，它能实现对交流电动机的准确控制，具有良好的静态，动态性能。     

感应电动机转差型矢量控制系统设计

本文分析了感应电动机矢量控制原理,通过矢量坐标变换和转子磁场定向实现磁通与转矩的解耦控制.在对系统进行仿真研究的基础上,以TMS320LF2407为控制核心进行软、硬件的设计,构建了一个感应电动机转差型矢量控制系统,为其设计和调试提供了思路.     

双频逆变器供电的感应电动机矢量控制系统

将双频逆变器用于感应电动机调速系统中,采用单周控制、滞环控制、矢量控制等控制方法。通过仿真证明该系统具有良好的调速性能,在减少开关损耗的同时不增加电机附加损耗和转矩脉动。     

异步电动机转差型SVPWM矢量控制系统建模与仿真

在分析异步电动机矢量变换控制原理的基础上,SVPWM方法应用于转差型矢量控制系统,并用MAT-LAB/Simdink对系统建模与仿真.重点阐述了SVPWM的原理及算法,给出了利用Simulink的实现方法.仿真结果证明了该模型的有效性,较之采用其他PWM控制策略的异步电机系统所获得的控制性能更好,验证了SVPWM理论,同时也为各种SVPWM新算法的应用提供了基础,为实际系统的设计及调试提供了思路.     

多相三电平逆变器-PMSM矢量控制系统研究

作为舰船综合电力推进系统的前期研究,本文研究了一种基于4组三电平逆变器的大功率12相永磁同步电机(Permanent Magnet Synchronous Motor,PMSM)矢量控制系统。文中首先介绍了三电平逆变器和PMSM矢量控制原理,在此基础上论述了多相PMSM变频调速系统采用多组三电平逆变器进行矢量控制的原理和实现方法。文中三电平逆变器采用空间矢量脉宽调制(Space Vector Pulse Width Modulation,SVPWM)控制策略,以TMS320LF2407型DSP为数控平台实现了三电平逆变器的空间电压矢量控制,并且多组逆变器之间采用CAN总线进行通讯。最后给出了相关的仿真波形和实验波形。     

空间矢量直接电流控制三相并网逆变器的研究

研究了一种基于空间矢量调制的三相并网逆变器的控制策略,该系统能够以单位功率因数向电网回馈电能。首先建立了两相同步旋转坐标系下逆变器的数学模型,在此基础上给出了基于空间矢量调制的网侧电流闭环控制策略,实现了并网电流有功分量和无功分量的独立控制,并给出了电网电压矢量跟踪的实现方法和电流环的设计。仿真和实验结果均表明,采用该控制策略可以改善并网电流质量,实现高功率因数并网。     

电压源电流型PWM逆变器

介绍电压源电流型ＰＷＭ逆变器的系统构成，工作特点，运行分析，以及用全硬件模拟和数字电路实现的控制。文中还给出了用此逆变器构成的两相交流电动机变频调速系统及其运行结果。     

电流源逆变器的滑模控制系统

本文研究了电流源逆变器(CSIM)的滑模变结构控制系统。提出了 CSIM 的滑模变结构控制器的设计方法。利用微型计算机实现了这个控制系统。     

参数自调整模糊控制在异步电动机矢量控制系统中的应用

针对异步电机矢量控制系统因电机参数变化和负载波动等因素性能变差的问题,提出一种基于参数自调整模糊控制方法的交流调速系统,这种自调整模糊控制器可以根据输入变量的大小调整模糊控制器的量化因子、比例因子和两个输入变量的权重,从而自动调整模糊控制规则。仿真和实验结果说明,具有自调整模糊控制器的异步电机矢量控制系统不仅动态和稳态性能都得到提高,而且具有较强的鲁棒性。     

The Stator Voltage-Controlled Current Source Inverter Induction Motor Drive

The steady-state and dynamic performance of a stator voltage-controlled current source inverter (CSI) induction motor drive are presented. Commutation effects are neglected and the analytical results are based on the fundamental component. A synchronously rotating reference frame linearized model in terms of a set of nondimensional parameters, based on the rotor transient time constant, is developed. It is shown that the control scheme is capable of stabilizing the drive over a region identical to the statically stable region of a conventional voltage-fed induction motor. A simple approximate expression for the drive dominant poles under no-load conditions and graphical representations of the drive dynamics under load conditions are presented. The effect of parameter variations on the drive dynamic response can be evaluated from these results. An analog simulation of the drive is developed, and the results confirm the small signal analysis of the drive system. In addition the steady-state results of the analog simulation are compared with experimental results, as well as with corresponding values obtained from a stator referred equivalent circuit. The comparison indicates good correspondence under load conditions and the limitation of applying the equivalent circuit for no-load conditions without proper recognition of the system losses.     

异步电机三电平矢量控制传动离线自整定

从异步电动机的状态方程出发,通过静止状态下对状态方程的简化和变形,采用特殊信号激励方法,对异步电动机三电平矢量控制系统进行离线参数估计,为传动系统调节器参数设计和参数在线估计做基础,仿真和实验结果验证了方法简单有效。     

Analysis of Field Orientation Control of Current Source Inverter Drive Induction Motor Systems

The field orientation control of current source inverter (CSI) drive induction motor (IM) systems has been known to give an induction motor dc motorlike characteristics. As a result of an analysis, the characteristic of these systems does not necessarily coincide with that of dc motor systems, especially with light loads. The result of the analysis is verified by experiments.     

Analysis of PWM GTO Current Source Inverter-Fed Induction Motor Drive System

A GTO current source inverter which consists of six main GTO's, two auxiliary GTO's, and three capacitors is presented. This inverter can supply both the sinusoidal voltage and current to the motor by pulsewidth modulation (PWM) techniques. The normal PWM pattern produced by two control signals with the carrier and the modulating waves and the optimal PWM pattern determined by the harmonic analysis are described. The experimental waveforms for 2.2-kW induction motor drives are given and the circuit operation of this inverter in the PWM technique is clearly shown. In addition, the steady-state characteristics of this inverter-induction motor drive system are analyzed by the state-variable methods, and a close agreement between the analyzed and the experimental waveforms is obtained. It is shown that the harmonic components are eliminated or reduced by using the optimal PWM pattern, and the new inverter with sinusoidal current and voltage is very excellent for ac motor drive.     

Control System Design of a Current Inverter Induction Motor Drive

An analytical design is presented of the control system of a slip-controlled current inverter induction motor drive. First of all, the drive dynamics are modeled in a control-oriented perspective. Afterwards, the transfer function between the rectifier output voltage and the inverter current is thoroughly analyzed and the results used to design the current controller. Two function generators are then synthetized and incorporated in the speed loop so as to obtain constant rotor flux operation and satisfactory torque dynamics. Lastly, the speed controller is designed for a fast and accurate response. All the parameters of the control system are given in terms of performance specifications and drive data. A computer implementation of the drive system is carried out and performance tests are shown.     

电流源型逆变器供电的感应电动机最佳效率运行的研究

本文提出了一个电流源型逆变器供电的感应电动机在轻载下以最佳效率运行的方法,通过调节定子电路和转差频率,减少轻载时电动机的气隙磁通,提高运行效率,试验表明,四分之一额定负载下,效率可以提高百分之十以上。     

异步电动机转差型无速度传感器矢量控制系统

主要研究的是异步电动机无速度传感器矢量控制系统，用矢量控制理论和电压解耦的方法建立了转差型电压矢量解耦控制系统。利用模型参考自适应（MRAS）的方法实现转速辨识，仿真结果验证了辨识方法是可行的。     

Optimal Efficiency Drive of a Current Source Inverter Fed Induction Motor by Flux Control

When an induction motor is driven under light loads, the efficiency can be substantially improved by reducing the air-gap flux of the motor. The air-gap flux can be indirectly controlled by adjusting the stator current and slip frequency in the case of a current source inverter induction motor drive system. The relationship between the stator current and the slip frequency for an optimal efficiency control is derived, and the control loop is suggested. By this method, ten percent or more improvement in the efficiency is obtained at a quarter of the full load. Generally, the reduced air-gap flux may result in undesirable dynamic responses. The small signal analysis is used in order to estimate the transient characteristics. The experimental results indicate a stable operation and a good dynamic response.