摘 要

随着现代工业的发展，人们对于电力系统的稳定性以及电能质量有了更高的要求。近年来，随着配电网规模不断扩大，同时大量的非线性负载如电力电子设备的投入，电力系统的安全稳定和经济运行受到了谐波、接地故障、无功等问题的严重威胁。可控电抗器作为一种重要的电气装置，在提高系统稳定性和改善电能质量方面有着重大的意义。

本文的主要目的是研究基于IGBT的电磁耦合电抗器并对其进行仿真验证。

1）针对本次论文设计研究的基于IGBT的电磁耦合电抗器，我们对其研究现状与发展前景进行了了解、分析与总结，并且提出了本次设计的关键问题是如何构建拓扑结构最优的电磁耦合电抗器，达到治理谐波的目的；

2）从机械式电抗器的基本结构入手，分析了空心式与铁芯式电抗器的阻抗变换关系，明确了其阻抗变换原理；又分析了单相晶闸管式和IGBT式电抗器的拓扑结构，在其基础上，通过改变控制绕组的复合连接方式，构建了包括串联型电磁耦合电抗器、并联型电磁耦合电抗器和串并联型电磁耦合电抗器等拓扑结构；

3）通过对晶闸管式电磁耦合电抗器进行阻抗变换原理分析，得出了其等效阻抗与晶闸管的导通角之间的变化关系；研究了IGBT式可控电抗器的阻抗变换关系，它的基本原理是利用电力电子器件IGBT作为开关器件，通过调节PWM波的占空比D来改变IGBT的导通时间，改变可控电抗器控制绕组侧的等效阻抗，再利用电磁感应的原理来改变可控电抗器的等效阻抗；在前人研究的基础上，分析了复合连接方式电磁耦合电抗器的阻抗变换，得出了电磁耦合电抗器的一次侧等效阻抗Z与IGBT的导通时间即PWM波的占空比D之间的关系；

4）针对IGBT式电磁耦合电抗器的建模与仿真，先介绍了仿真工具SIMULINK；然后，分析与研究了串联型、并联型和串并联型IGBT式电磁耦合电抗器，在选定了仿真模块后，在Simulink中构建了串联型、并联型、串并联型的电磁耦合电抗器的仿真模型；设置了元器件的参数后进行仿真，得到了随占空比变化的工作绕组侧的电压与电流的波形；根据实验数据，得出了等效阻抗与占空比的关系图，从而验证了阻抗变换的正确性；将几种结构的阻抗变换关系，试验仿真数据进行对比，得出谐波治理效果较好的结构是串并联型的电磁耦合电抗器；

5）主要对全文进行总结，在仿真验证结果的基础上对本次设计进行总结与分析，找到本次设计过程中所存在的不足之处，并且指出还待完善的地方，并对于电磁耦合电抗器的未来发展前景进行展望。

关键词：电磁耦合；IGBT；可控电抗器；MATLAB/SIMULINK

Abstract

With the development of modern industry, people for the stability of the power system and power quality has a higher demand. In recent years, with the scale of distribution network has been expanding, while a large number of non-linear load such as power electronic equipment investment, power system security and stability and economic operation by the harmonic, ground fault, reactive and other serious threat. Controlled reactors as an important electrical device, in improving system stability and improve the quality of power is of great significance.

The main purpose of this paper is to study the IGBT-based electromagnetic coupling reactor and its simulation.

1) Based on the IGBT-based electromagnetic coupling reactor designed and researched in this paper, we have made an understanding, analysis and summary of its research status and development prospects, and put forward the key problem of this design is how to build the optimal topology Electromagnetic coupling reactor, to achieve the purpose of harmonic control.

2) From the basic structure of the mechanical reactor, the relationship between the impedance transformation of the hollow type and the core type reactor is analyzed, and the principle of the impedance transformation is clarified. The topology of the single-phase thyristor and IGBT reactor is analyzed, On the basis of the above, the in series type electromagnetic coupling reactor, the parallel type electromagnetic coupling reactor and the series-parallel electromagnetic coupling reactor is built by changing the composite connection mode of the control winding.

3) Through the analysis of the impedance conversion principle of the thyristor electromagnetic coupling reactor, the relationship between the equivalent impedance and the conduction angle of the thyristor is obtained. The relationship between the impedance conversion of the IGBT type controllable reactor is studied. The basic principle is to use the power electronics IGBT as a switching device, by adjusting the PWM wave duty cycle D to change the IGBT turn-on time to change the controllable reactor control winding side of the equivalent impedance, and then use the principle of electromagnetic induction to change Based on the previous research, the impedance conversion of the electromagnetic coupling reactor is analyzed, and the relationship between the first-order equivalent impedance of the electromagnetic coupling reactor and the duty cycle D of the PWM wave is obtained.

4) Aiming at the modeling and simulation of the IGBT-type electromagnetic coupling reactor, the simulation tool SIMULINK is introduced. Then, the series-type, parallel-type and series-parallel IGBT-type electromagnetic coupling reactors are analyzed and studied. After selecting the simulation module The simulation model of the electromagnetic coupling reactor of series type, parallel type and series-parallel type is built in Simulink. The parameters of the components are simulated and the voltage and current of the working winding side with the duty cycle change are obtained. According to the experimental data, the relationship between the equivalent impedance and the duty ratio is obtained, and the correctness of the impedance transformation is verified. The impedance transformation relation and the experimental simulation data of several structures are compared and the harmonic control The better structure is a series-parallel electromagnetic coupling reactor.

5) Summarize the whole paper, summarize and analyze the design on the basis of the simulation results, find the shortcomings of this design process, and point out the place to be perfect, and for the electromagnetic coupling reactance The future development prospects of the future.

Key words: electromagnetic coupling; IGBT; controllable reactor; MATLAB / SIMULINK.

目 录

摘 要 I

Abstract II

第1章 绪论 1

1.1 基于IGBT的电磁耦合电抗器研究目的与意义 1

1.1.1 基于IGBT的电磁耦合电抗器研究目的 1

1.1.2 基于IGBT的电磁耦合电抗器研究意义 2

1.2 电磁耦合电抗器的国内外研究现状 2

1.2.1 电磁耦合电抗器的现状 2

1.2.2 国内外基于电磁耦合电抗器技术研究的发展状况 4

1.2.3 国内外电磁耦合电抗器的发展状况 4

1.3 研究电磁耦合电抗器的关键问题及技术难点 5

1.3.1 研究基于IGBT的电磁耦合电抗器的关键问题 5

1.3.2 研究IGBT式电磁耦合电抗器的技术难点 7

1.4 论文主要研究内容及章节安排 7

第2章 基于IGBT的电磁耦合电抗器拓扑结构研究 9

2.1 机械式电抗器结构及原理 9

2.1.1 机械式电抗器的结构 9

2.1.2 机械式电抗器的工作原理 9

2.2 电磁耦合式可控电抗器结构及原理 10

2.2.1 晶闸管式可控电抗器结构及原理 11