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1、太原理工大学硕士研究生学位论文 I基于 DSP控制的并联型三相三线制有源电力滤波器的设计 摘 要 随着电力电子技术的快速发展，电力电子装置在各行业领域均得到广泛应用，可由此带来的电网谐波和无功等问题却日益严重，这对电力系统的安全、稳定及有效运行造成了极大的威胁。因此以谐波治理和无功补偿为目的的电力电子装置应运而生。 本论文结合电力电子技术、计算机控制和电力系统等交叉学科，设计了基于DSP控制的并联型有源电力滤波器（APF）。在查阅大量中英文相关资料的基础上，阐述了谐波的产生、危害及其治理的必要性，介绍了APF的发展、 分类及工作原理， 并详细说明了APF主电路的设计方法以及其主要器件的选取和参
2、数的确定。之后总揽各谐波电流的检测方法，重点分析了基于瞬时无功功率理论的pq以及pqii谐波电流检测法，并利用MATLAB对二者进行仿真。此外，还着重研究了APF的控制策略，包括补偿电流跟踪控制和直流侧电压控制，并最终选定各自适合的控制方式。 本论文在进行以上分析、研究、仿真的基础上，对APF系统进行了总体设计，进行了APF系统主控板、DSP和ARM核心板、采样电路等硬件电路设计，并制作印刷电路板。软件上，设计主从系统各部分程序流程图以及相应的软件编程，调试并最终制成样机。 该样机设计上具有以下特点：选用了计算能力更强大的TMS320F2812型DSP，而不是TMS320LF2407A或是AR
3、M7，这在运算速度和精度上更胜一筹；采用运算与控制分离的双芯片构架设计，且两芯片采样通道相互隔太原理工大学硕士研究生学位论文 II离，这使系统更加稳定可靠；放弃使用容易产生耦合干扰的内部A/D模块，有效提高系统精度；选用频率较低的外部晶振，可以有效降低电磁干扰，同时可以提高系统的可靠性，因为软件可编程锁相环能够提供较高的系统时钟。 最后，对样机进行了调试，验证了系统设计的合理性，指出了系统研究和开发过程中的一些问题，并展望了下一步 APF 研究的重点。 该选题是作者参与的河南森源电气股份有限公司的并联型有源电力滤波器项目。 关键词：有源电力滤波器，谐波抑制，瞬时无功功率理论，数字信号处理器 太
4、原理工大学硕士研究生学位论文 IIIDESIGN OF SHUT ACTIVE POWER FILTER IN THREE-PHASE THREE-WIRE SYSTEM BASED ON DSP CONTROL ABSTRACT With the rapid development of power electronics technology, power electronic equipments has been widely used in the filed of industry, agriculture production and peoples daily life . H
5、owever, harmonics and reactive power problems of power system are becoming more and more serious., which bring great threat to security, stability, and economic operation of power system. Thus, to deal with these problems all kinds of devices come to be designed. SAPF on DSP is designed by the combi
6、nation of power electronics technology, computer control and power systems. The paper elaborates harmonic generation, harm and the necessity for governance on the basis of referring to a large number of Chinese and English information, describes development, classification and principle of APF, and
7、explains the design method of APF main circuit as well as the selection of main components and the fixed parameter in detail. Afterward, it assumes overall responsibility of each harmonic current examination method, focus on analysising pqand pqiiharmonic current detection method based on instantane
8、ous reactive power theory, 太原理工大学硕士研究生学位论文 IVand achieve the simulations using MATLAB. The Control strategy of APF is studied emphatically, including bucking current follow-up control and DC voltage control, finally choose the control of their own way. This paper put up the system design of APF acco
9、rding to the above task of analysis, research, simulation, and has carried on the hardware circuit designs, including APF system main control board, DSP and ARM smallest system board, sampling circuit board and so on, and designs the printed circuit boards. On software, it designs various subprogram
10、 flow charts of master and slave system. Meanwhile, the corresponding software programming and the prototype are made. The design of prototype has the following characteristics: utilize the more powerful computing power TMS320F2812, which has much better operating speed and precision, rather than TM
11、S320LF2407A or ARM7; designs operation and control of separation by two-chip, and isolates the sampling channel of the two chip, which makes the system more stable and reliable. Giving up make use of easily to have the coupling disturbance of internal A/D module, it will increase the system accuracy
12、 effectively; Selecting the low frequency exterior crystal oscillator, it will reduce the electromagnetic interference availably, and the high system clock can be provided by the software programmable phase-locked loop for the system, thus enhance systems reliability. Finally, the prototype has been
13、 debugged which can demostrate the rationality of the system design, has pointed out some questions in the system 太原理工大学硕士研究生学位论文 Vresearch and development process, and have made prospects for the next research of APF. The subjects are from the Shut Active Power Filter project of Henan Senyuan Elect
14、ric CO., LTD. KEY WORDS: active power filter, harmonic suppression, Instantaneous reactive power theory, digital signal processor 太原理工大学硕士研究生学位论文 I图表索引 图 2- 1 有源电力滤波器的系统结构.9 图 2- 2 电压源型有源电力滤波器.11 图 2- 3 电流源型有源电力滤波器.11 图 2- 4 有源电力滤波器的分类.12 图 2- 5 单独使用的串联型 APF .12 图 2- 6 单独使用的并联型 APF .13 图 2- 7 统一电能质量调节器基本拓扑结构.13 图 2- 8 有源电力滤波器的谐波检测环节原理.15 图 2- 9 谐波检测互感器的安装位置的选择.
