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中文摘要：
随着微网的广泛研究和应用,谐波问题对微网的影响变得不容忽视.为此,应用基于单周控制的有源电力滤波器来进行微网的谐波抑制.相较于传统方法,基于单周控制的有源电力滤波器省略了谐波检测电路,在很大程度上简化了系统结构.该单周控制方法结合了空间矢量控制,将工频周期分成3 个控制区间,进一步简化了控制器.建立了基于单周控制的有源电力滤波器模型及含风力发电系统和光伏发电系统的微网模型,并进行了微网谐波抑制仿真分析.仿真结果表明,基于单周控制的有源电力滤波器既能减小非线性负荷及分布式电源的谐波对微网内部电能质量的影响,又能减小微网谐波对外网的影响,取得了良好的谐波抑制效果.
英文摘要：
With wide research and application of micro-grid,the effect of the harmonic problems on micro-grid be-comes unignorable. One cycle controlled active power filter(APF) is applied to suppress harmonic in micro-gridin this paper. Compared with traditional methods,one cycle controlled APF omits the harmonic detecting circuit and greatly simplifies the system structure. The proposed method,combined with space vector control,divided the fre-quency cycle into three control sextants,which simplified the controller further. The model of one cycle controlled APF and micro-grid model including wind power system and photovoltaic systems were built. Then simulation analy-sis on micro-grid harmonic suppression was made. Simulation results show that the influence of harmonic produced by nonlinear load and distributed generations on the power quality within micro-grid can be reduced based on one cycle controlled APF,and the influence of harmonic produced by micro-grid on the public power grid also weakens. One cycle controlled APF has a good compensation effect in harmonic suppression.
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