基于复合控制的改进型级联STATCOM控制策略

发布时间：2018-02-10 21:32

本文关键词： 静止同步补偿器谐波及不对称分量补偿重复控制电流检测多FPGA架构　出处：《电力系统保护与控制》2015年17期 　论文类型：期刊论文

【摘要】：作为当前广泛应用的无功补偿装置,静止同步补偿器(STATCOM)在进行无功补偿的同时,还可以实现对谐波及不对称分量的补偿功能。STATCOM进行多目标补偿时,比例积分(Proportion-Integral,PI)控制难以实现对谐波及不对称分量的无静差控制。为此,提出将一种改进型重复控制技术引入谐波及不对称分量的跟踪控制中,建立了基于重复控制和PI控制的复合控制器的模型,该控制器既可实现对直流信号的快速跟踪控制,又能显著加快对交流信号的响应速度。针对特征谐波的选择性补偿,采用dq坐标变换及递归傅立叶变换(DFT)相结合的电流检测方法。最后,基于多FPGA控制架构搭建了基于H桥的级联STATCOM仿真与实验平台,并通过仿真及实验来验证控制策略的合理性。
[Abstract]:As a widely used reactive power compensation device, static synchronous compensator (STATCOM) not only can compensate reactive power, but also can realize the compensation function of harmonic and asymmetrical components. Statcom is a multi-target compensator. Proportional integral Proportion-IntegralPI (Pi) control is difficult to control harmonic and asymmetric components without static error. Therefore, an improved repetitive control technique is proposed for tracking harmonic and asymmetric components. The model of compound controller based on repetitive control and Pi control is established. The controller can not only realize the fast tracking control of DC signal, but also accelerate the response speed of AC signal. The current detection method based on DQ coordinate transform and recursive Fourier transform is used. Finally, the simulation and experiment platform of cascaded STATCOM based on H bridge is built based on multiple FPGA control architecture, and the rationality of the control strategy is verified by simulation and experiment.
【作者单位】：中国矿业大学信息与电气工程学院;
【基金】：高等学校博士学科点专项科研基金(201100951 10014)~~
【分类号】：TM761.12

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