摘要:随着各种非线性电力电子装置的广泛应用,电力系统中的谐波和无功等电流污染问题日趋严重。有源电力滤波器APF（Active Power Filter）作为一种动态抑制谐波和补偿无功的新型电力电子装置,是电能质量控制领域中的研究热点，具有广泛的应用前景。当前，在低压配电网中，输电线路一般采用三相四线制，因此本文对基于三相四线制的并联型有源电力滤波器进行了一系列的研究与设计。本文从三相四线制并联型APF的工作原理与系统结构出发，然后对控制系统各模块进行软硬件设计，最后在Matlab／Simulink环境中对三相四线制并联型有源电力滤波器进行仿真，仿真结果表明设计的三相四线制并联型有源电力滤波器控制系统的补偿特性和滤波效果很好。76744

毕业论文关键字：三相四线制，有源电力滤波器APF，Matlab仿真

Abstract：With the wide application of nonlinear power electronic devices, the current pollution problems and reactive power harmonic in power system is becoming more and more serious。 Active power filter APF, as a new power electronic device of harmonic and reactive compensation, is an energy research hotspot in the field of quality control, has a good application prospect widely。 At present, the transmission line usually adopts three-phase four wire system  in the low voltage distribution network, so this paper carried out a series of research and design of shunt active power filter based on three-phase four wire system。 This paper starts from the working principle and system structure of the three-phase four wire shunt APF, then designs the software and hardware of each module of the control system, finally simulates the three-phase four wire shunt active power filter in Matlab / Simulink environment。 The simulation results show that the compensation characteristic and filtering effect of the design of the control system the three-phase four line shunt active power filter are very good。

Key words: three-phase four wire，active power filter APF，Matlab simulation

目   录

1 绪论 3

1。1 谐波的产生及其危害 3

1。2 谐波抑制方法 5

1。3 本课题的研究内容 5

2三相四线制并联型APF的工作原理与系统结构 6

2。1 APF的工作原理 6

2。2 并联型APF的系统结构 7

3三相四线制并联型APF控制系统的硬件设计 8

3。1检测与调理模块 9

3。2驱动电路 10

3。3保护电路 10

4 三相四线制并联型APF控制系统的软件设计 11

4。1 主系统程序 11

4。2 系统初始化程序 12

4。3 A/D采样程序 12

4。4 直流侧电压控制程序 13

4。5 谐波电流检测算法程序 13

5 三相四线制并联型APF控制系统的仿真 14

5。1 谐波电流检测算法 14

5。2 仿真模型搭建 16

5。3 仿真波形与结果分析 18

结论 18