混合型有源电力滤波器重复性控制策略研究

发布时间：2018-05-10 15:36

本文选题：谐波抑制 + 无源滤波器　；参考：《河北工业大学》2015年硕士论文

【摘要】：随着各类非线性电力电子装置在工业及人民日常生活中的广泛应用,电力系统中的谐波污染问题日益严重,电能质量受到很大影响。无源电力滤波器(Passive Filter,PF)是目前应用较为广泛的抑制谐波的主要手段,但存在一些不可避免的缺点。有源电力滤波器(Active Power Filter,APF)是一种补偿谐波电流和无功功率的现代电力电子设备,具有很好的动态补偿性能,跟无源滤波器相比有许多优点,但是也存在补偿容量小、价格成本高的缺点。本文从有源滤波器的基本原理出发,结合PF和APF的特性,提出了混合型有源电力滤波器(Hybrid Active Power Filter,HAPF),取两者之长,补两者之短,既减少了谐波补偿装置的前期投资,又提高了装置的性价比,达到实用化的目的。本文在分析传统并联混合型有源电力滤波器的基础上,尝试了一种串联谐振注入式HAPF的分析研究,并详细研究其建模、参数设计及系统控制等关键技术。通过该滤波器的无源部分承担主要的谐波补偿工作,有源部分仅滤除剩余的电网的高次谐波以改善系统的滤波性能,HAPF有效地减小了系统容量和APF的耐压等级。在谐波分析的基础上,本文重点研究了基于内模原理的重复控制理论,并提出了将PI控制嵌入重复控制器内,组成复合型控制方法应用于HAPF的电流跟踪控制电路,使系统有效降低谐波畸变率。最后,在Matlab/Simulink环境下建立了有源电力滤波器系统模型,并对谐波检测及电流跟踪控制进行了仿真分析,仿真结果验证了本文所提复合型重复PI控制方法的优越性。
[Abstract]:With the wide application of all kinds of nonlinear power electronic devices in industry and people's daily life, the problem of harmonic pollution in the power system is becoming more and more serious, and the power quality is greatly affected. Passive Filter (PF) is the main means to suppress harmonics, but there are some unavoidable defects. Active Power Filter (APF) is a modern power electronic device that compensates harmonic current and reactive power. It has good dynamic compensation performance. Compared with passive filter, it has many advantages, but it also has the disadvantages of small compensation capacity and high price cost. This paper is based on the basic principle of active filter. In accordance with the characteristics of PF and APF, a hybrid active power filter (Hybrid Active Power Filter, HAPF) is proposed to take both the length of the two and the short of the two. It not only reduces the initial investment of the harmonic compensation device, but also improves the cost performance of the device, and achieves the purpose of practicality. This paper is based on the analysis of the traditional parallel hybrid active power filter. The analysis and research of a series resonant injection type HAPF is tried, and the key technologies such as modeling, parameter design and system control are studied in detail. Through the passive part of the filter, the main harmonic compensation work is carried out. The active part only filters the high order harmonics of the remaining power grid to improve the filtering performance of the system, and the HAPF effectively reduces the system. On the basis of harmonic analysis, on the basis of harmonic analysis, this paper focuses on the theory of repetitive control based on the internal model principle, and puts forward a current tracking control circuit for the application of a compound control method to HAPF by embedding PI control into the repetitive controller, so that the system can effectively reduce the harmonic distortion rate. Finally, in Matlab/Simulink, the system can reduce the harmonic distortion rate. The active power filter system model is set up in the environment, and the harmonic detection and current tracking control are simulated. The simulation results verify the superiority of the proposed compound PI control method.

【学位授予单位】：河北工业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TM761;TN713.8

【参考文献】