应用于微电网的并联型有源电力滤波器的研制

发布时间：2018-03-31 13:53

本文选题：并联型APF　切入点：微电网　出处：《厦门大学》2014年硕士论文

【摘要】：为更好地实现可再生能源的应用并不断提高能源的有效利用率,越来越多的科技工作者开始关注微电网这一全新的研究领域,而微电网关键技术之一——微电网电能质量更是受到了广泛的关注。本文在阐述微电网概念诞生背景的基础上,分析了微电网电能质量问题及研究现状,针对应用于微电网的有源电力滤波器,提出了具有针对性的谐波阻尼复合控制和电网电压前馈控制策略,通过仿真和实验对本文所提出的算法进行了验证。首先,对应用于微电网的有源电力滤波器的拓扑结构进行了选择分析,在进行数学建模与运行分析的基础上,完成了关键元器件的参数选型,实现了有源电力滤波器的功率电路。对应用于微电网的并联型有源电力滤波器的控制系统进行了研究,针对微电网的特殊性,提出将电网电压谐波阻尼控制与前馈控制加入到常规的电流控制回路中,构成复合控制,以实现对微电网电压谐波的抑制与电流控制作用的强化。随后,设计并实现了基于TI公司32位定点DSP TMS320F2812的有源电力滤波器的控制系统,其中电路设计部分主要包括主控芯片DSP及其外部接口、信号采样和调理电路、硬件保护电路等；程序设计部分主要介绍了基于DSP/BIOS系统编写的系统软件。最后,设计并搭建了包含电网、微源、非线性负载等的实验平台,基于此将本文所述的控制方法应用到实验系统中,实验结果和数据表明,本文所设计的控制算法能够较好的完成对微电网电流谐波和电压谐波的补偿,并能够很好的抑制谐振。
[Abstract]:In order to better realize the application of renewable energy and improve the efficiency of energy utilization, more and more scientific and technological workers begin to pay attention to the microgrid, which is a new research field. However, the power quality of microgrid, one of the key technologies of microgrid, has been paid more and more attention. Based on the background of the concept of microgrid, this paper analyzes the power quality of microgrid and its research status. Aiming at active power filter (APF) applied in microgrid, this paper presents a new control strategy of harmonic damping compound control and voltage feedforward control. The proposed algorithm is verified by simulation and experiment. Firstly, the topology of active power filter used in microgrid is selected and analyzed. On the basis of mathematical modeling and operation analysis, the parameter selection of key components is completed. The power circuit of active power filter is realized. The control system of shunt active power filter used in microgrid is studied. It is proposed that the voltage harmonic damping control and feedforward control be added to the conventional current control loop to form a compound control to suppress the voltage harmonics and strengthen the current control of the microgrid. Then, the control system of active power filter based on TI 32-bit fixed-point DSP TMS320F2812 is designed and implemented. The circuit design mainly includes the main control chip DSP and its external interface, signal sampling and conditioning circuit, hardware protection circuit and so on. The part of program design mainly introduces the system software based on DSP/BIOS system. Finally, an experimental platform including power grid, micro-source and nonlinear load is designed and built. Based on this, the control method described in this paper is applied to the experimental system. The experimental results and data show that, The control algorithm designed in this paper can compensate the harmonic and voltage harmonics of microgrid and restrain the resonance well.
【学位授予单位】：厦门大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM761;TN713.8

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