并联有源电力滤波控制采用模糊逻辑控制器

G. Tsengenes, G. Adamidis
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引用次数: 42

摘要

本文提出了一种消除电流谐波和补偿负载无功功率的并联型有源滤波器。目前大多数并联有源电力滤波器控制方法都需要一个复杂而精密的数学模型,特别是PI控制器的整定。为了简化和改进并联有源滤波控制系统,应用模糊逻辑理论。本文通过对直流母线电容电压的控制实现了一种模糊逻辑算法。还实现了一种这样的算法来控制逆变器的输出电流。对电容电压模糊逻辑控制系统的性能进行了研究,与传统的PI控制器相比,模糊控制器的动态响应明显改善。为了降低电网电流THDi指标,研究了一种模糊逻辑滞后电流控制器。为了提高并联有源滤波器在非理想电网电压下的性能,提出了一种改进的p-q理论。仿真结果显示了模糊逻辑理论在直流母线电压控制和电流控制中的优势。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Shunt active power filter control using fuzzy logic controllers
This paper presents a shunt active filter which eliminates current harmonics and compensates the reactive power of the load. The majority of shunt active power filter control methods which have been presented require a complex and sophisticated mathematical model, especially for the tuning of the PI controllers. To simplify and improve the shunt active filter control system, fuzzy logic theory is applied. In this paper, by the way of controlling the capacitor voltage of the dc bus a fuzzy logic algorithm is implemented. One such algorithm is also implemented to control the output current of the inverter. The performance of the capacitor voltage fuzzy logic control system was investigated, and the improvement of the dynamic response of the fuzzy controller compared to the conventional PI controller became evident. For the reduction of the grid current THDi index, a fuzzy logic hysteresis current controller is investigated. In order to improve the performance of shunt active filter under non ideal grid voltages, a modified version of the p-q theory is proposed. The simulation results are presented and discussed showing the advantages of fuzzy logic theory in the dc bus voltage control and current control.
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