30kVA三相三线制并联型有源电力滤波器研究

发布时间：2018-06-02 22:15

本文选题：并联型有源电力滤波器 + 小波变换　；参考：《湖北工业大学》2015年硕士论文

【摘要】：随着近年来电力电子装置在电力系统中的大量使用,电网中会产生大量谐波,影响着各种电器的使用。现在电力行业研究者的研究重点方向就是在于如何减弱谐波的影响。在各种抑制方式中,使用有源电力滤波器(APF:Active Power Filter)是使用最为广泛的方式。本文介绍了一些研究谐波抑制的方法,尤其重点介绍了有源电力滤波器现阶段的研究概况,未来发展的趋势。就此对有源电力滤波器与无源电力滤波器进行比较,如各自基本原理、常见分类、优缺点等等。本文以并联型APF为例介绍了APF的工作原理,采用的是三相三线制接法,建立了数学模型,并且分析了研制三相三线制并联型有源电力滤波器中重要的几项技术研究,分别是:谐波电流检测;补偿电流控制;直流侧电压控制。对谐波电流检测部分主要介绍了基于瞬时无功功率理论和基于小波变换这几种谐波电流检测法,使用SIMULINK针对小波变换做了仿真。控制系统是决定有源电力滤波器性能的关键,本装置采用的补偿电流控制方法:空间矢量PWM调制方法。最后,本文对所设计的样机平台进行了较为详细的介绍。从主电路和控制系统硬件电路两方面分别介绍,包括部分控制模块原理图以及运行原理。最后通过该平台针对分立功能模块、无功补偿控制进行了部分研究,其部分实验波形与实验数据已经验证了本文上述讨论的工作原理与控制策略的正确性。
[Abstract]:With the large use of power electronic devices in power system in recent years, a large number of harmonics will be produced in the power network, which will affect the use of various electrical appliances. Now the research focus of power industry is how to reduce the impact of harmonics. The active power filter APF: active Power filter is the most widely used method. In this paper, some methods of harmonic suppression are introduced, especially the current situation of active power filter (APF) and the trend of its development in the future. In this paper, the active power filter and passive power filter are compared, such as their basic principles, common classification, advantages and disadvantages, and so on. In this paper, the working principle of parallel APF is introduced, the three-phase three-wire connection method is adopted, the mathematical model is established, and several important techniques in the development of three-phase three-wire shunt active power filter are analyzed. They are: harmonic current detection; compensation current control; DC side voltage control. In the part of harmonic current detection, several harmonic current detection methods based on instantaneous reactive power theory and wavelet transform are introduced. SIMULINK is used to simulate wavelet transform. The control system is the key to determine the performance of active power filter. The compensation current control method used in this device is space vector PWM modulation method. Finally, the prototype platform is introduced in detail. The main circuit and the hardware circuit of the control system are introduced, including the schematic diagram of part of the control module and the principle of operation. Finally, through the platform for discrete functional modules, reactive power compensation control has been part of the study, part of the experimental waveform and experimental data have verified the above discussed in this paper, the working principle and the correctness of the control strategy.
【学位授予单位】：湖北工业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TN713.8;TM761

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