In this paper a vector controlled AC speed-regulating system is developed,which adopts the rotor flux field-orientated theory to meet the requirements for an electric traction system.The adopted vector control theory and the control scheme are introduced,the configuration of both the main circuit and the control board system are presented,and the control scheme is explained.Based on theoretic analysis,a simulation platform is designed to help thorough research,and furthermore,an experimental system is set up to realize all these control schemes.Results from both simulation and experiment verify the excellent qualities of this system.

介绍了一种用于有源电力滤波器(Active Power Filter,APF)实时监控与保护的计算机监控系统.该系统运用VC++的多线程编程技术,实现了高速不间断采样和实时数据处理的多任务并行机制,从而能对APF系统进行高采样率的谐波分析和更完整可靠的故障实时报警、滤波.此外,软件设计中引入DAQBench工控ActiveX组件,加强了监控软件界面与功能的专业性.

介绍了一种用于有源电力滤波器(Active Puwer Filter-APF)的计算机实时监控系统.该系统运用VC++的多线程编程技术,实现了不间断采样和实时数据处理的高速并行操作,从而能对APF系统进行高采样率的谐波分析和更完整可靠地故障实时录波,具有较高的实时性.此外,软件设计中引入DAQBench工控ActiveX组件,加强了监控软件界面与功能的专业性.实验表明,此监控系统能对APF进行有效的监控和保护,提高了APF系统的可靠性与自动化水平.

介绍了一种由无源滤波器和有源滤波器组成的新型混合电力滤波器.由于在有源滤波器两端并联了一个电感,可使有源滤波器的容量极小.提出了该并联电感的设计原则.实验结果验证了理论分析和设计方法的正确性.

介绍了电气化铁路用单相并联混合型有源滤波器的全数字控制系统.首先简介并联混合型单相有源电力滤波器的结构和基本原理,提出对控制系统的要求,据此确定控制系统硬件结构,随后介绍硬件配置的特点和软件的具体实现,最后给出了实验结果.实验表明,该控制系统满足有源滤波器的实时控制要求,并联混合型滤波器的滤波性能良好.

A novel single-phase hybrid filter is proposed to compensate the harmonic current and the reactive power caused by AC-DC type of electric locomotive in power systems. The new control strategy of the hybrid power filter is also presented. The effectiveness of the hybrid active filter is verified by the experimental results obtained from a 1MVA laboratorial model.

介绍了由晶闸管投切滤波器和有源滤波器组合构成的一种三相混合电力滤波器.对其进行了理论分析,介绍了具体的结构及其控制方案,利用MATLAB对其进行仿真并进行了实验研究,最后给出仿真与实验结果并进行了分析.

This paper presents a novel topology of single phase hybrid parallel active filter.A control strategy based on detecting load current is proposed in detail.The control method of PWM inverter is discussed.And the full digital realization based on double DSPs is introduced.A 30 kVA) prototype is designed.The experimental results exhibit excellent performance of the new hybrid filter.However,the required rating of the active filter can be very low.

本文介绍了直流斩波电路实验装置的研制工作.文中首先介绍了直流斩波电路实验装置的工作原理.接着介绍了实验装置的研制过程包括主电路的设计和控制电路的设计.在文中最后给出了实验结果,经证明该实验装置工作可靠,是理想的实验装置.

介绍开发本实验装置的背景,简述降压斩波电路和升压斩波电路的原理,并叙述实验装置的设计思路和设计结果,最后给出装置的实验结果,表明该实验装置性能可靠,符合本科生实验要求.

介绍了半桥型开关稳压电源的原理.讨论了实验装置的组成及各个部分的结构.并给出了实验波形.

介绍了30kVA并联型有源电力滤波器系统的构成、工作原理,对装置的容量需求及器件容量选择进行了讨论.利用研制的装置进行了谐波补偿实验,取得了满意的补偿结果.

本文介绍了有源电力滤波器在近年来的一些发展情况,对有源电力滤波器目前的主要研究问题、分类及其在国外的应用情况作了叙述.

概述了电气化铁道谐波问题现状,介绍了采用有源滤波器解决牵引网谐波干扰的几种方案.针对各个方案的特点,优选出一种较适合电气化铁道用的有源滤波器方案.

为解决在三相四线制电路中使用有源电力滤波器滤除非线性负载的谐波问题,提出采用零线电流分离法来实现有源电力滤波器在三相四线制系统中的应用.仿真及实验结果表明,采用这种方法,可以对三相四线制系统中的谐波、负序、零序等电流分量进行补偿,补偿效果良好.