摘要：随着电力电子技术的发展和应用，各类新型的用电设备不断出现，大大方便了人们的生活，但也带来谐波对电网引起的污染，影响了电力系统的运行效率和可靠性。因此单元电路的谐波治理问题也受到关注。本文重点分析了APF的控制策略，采用滞环比较控制法来控制补偿电流；三电平逆变器具有效率高、低电磁干扰（EMI）开关器件承受电压低和开关损耗小等显著优势能产生多阶梯、低失真的输出波形，将其应用于有源电力滤波器主回路，不仅提高了装置容量，而且提高了谐波补偿效果和系统可靠性。本文运用法的原理来进行谐波检测，在研究有源电力滤波器的谐波及无功电流的检测方法之后，得到了谐波产生的原因及怎样对它进行治理提出方法，给出了APF的实验平台设计方案。57851

毕业论文关键词：谐波治理，有源电力滤波器，谐波检测

Abstract: With the development and application of power electronic technology, all kinds of new electrical equipment appear constantly, greatly convenient people's life, but also brings the harmonic pollution caused by power grid, affecting the operation efficiency and reliability of power system. So the unit circuit of harmonic governance issues also concern. This article also analyses the control strategy of APF, the compensation current hysteresis comparison control method is used to control; With high efficiency, low electromagnetic interference (EMI) under low voltage switch devices and switching loss and small significant advantage is can produce more ladder, low distortion of the output waveform of three level inverter, applied to the active power filter main circuit, not only improves the equipment capacity, and improve the harmonic compensation effect and system reliability. Harmonic detection, this paper works on the principle of the method in the research of active power filter harmonic and reactive current detection method, the cause of harmonic and how to management method is put forward. The experimental platform design scheme of APF is presented.

Key words: the harmonic governance, harmonic detection, active power filter,

目  录

1 引言： 4

2  APF理论基础: 5

3 有源电力滤波器试验平台搭建 5

3.1有源电力滤波器的工作原理： 5

3.2 有源电力滤波器的分类 7

3.3 有源电力滤波器的基本结构 7

3.3.1谐波检测环节 7

3.3.2 控制系统 9

3.3.3 主电路 10

3.4 三相并联型电压型有源电力滤波器的基本原理 11

4 三相并联电压型有源电力滤波器的设计 12

4.1 系统总体结构 12

4.2 主电路设计 14

4.2.1 系统主电路结构 14

4.2.2 IPM保护电路设计 15

4.3 控制系统设计 16

4.3.1滞环电流控制方法 16

5 谐波检测系统 16

5.1 基于FFT的谐波检测方法 16

5.2 基于瞬时无功功率理论的谐波与无功电流检测法 17

5.3  p-q检测法 19

5.4 ip-iq电流检测法