基于自适应模糊逻辑和PI控制器的孤岛微电网在不同电压和负载变化下的最优控制

S. Choudhury, Abhijeet Choudhury, Deepsikha Panda, P. Rout
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引用次数: 8

摘要

本文提出了一种适用于微电网自主运行的鲁棒灵敏电压控制方法。所提出的自适应模糊控制器包含两个基于Mamdani的FLC,该FLC具有自调整比例因子,隶属函数和不确定状态下的控制增益的特点,无论运行条件如何变化。迟滞带电流控制器(HBCC)用于产生电压源变换器(vsc)的门脉脉冲,也有助于瞬时控制电流。该系统中使用的HBCC限制了设备电流,并且无论使用的控制器和控制输出如何,都能给出更快的响应。与传统的PI控制器相比,所提出的控制器显示出优异的效果。无论负载变化、电压变化和负载不平衡如何,所提出的方法都是有效的。该方法减少了瞬态响应时间,消除了功率振荡,获得了更快的并发。A-FLC的简单设计和升级的动态性能为自主微电网的电压控制提供了保障。除上述干扰外,在MATLAB环境下对系统进行了建模、验证和仿真研究。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Optimal control of islanded microgrid with adaptive fuzzy logic & PI controller using HBCC under various voltage & load variation
This paper presents a robust & astute voltage control avenue for micro grid system operating in autonomous mode. The proposed Adaptive Fuzzy Logic Controller contains two Mamdani based FLC which features in self adjustment of scaling factors, Membership Functions & control gains during uncertainties regardless of any change in the operating conditions. A Hysteresis Band Current Controller (HBCC) has been used which helps in generating the gate pulses for the Voltage Source Converters (VSCs) and also helps in controlling the current instantaneously. The HBCC used in this system limits the device current & gives a faster response irrespective of the controllers & the control outputs used. The proposed controller shows exceptional results as compared to the traditional PI controller. Irrespective of load variation, voltage variation & load unbalance the proposed technique holds good. The transient response time is exclusively reduced, power oscillations are wiped out and faster concurrence is obtained. The uncomplicated design & upgraded dynamic behavior of the A-FLC makes it assuring contestant for Voltage control in autonomous micro grid. Apart from all these disturbances the system was modeled, validated and simulated under the simulation studies in MATLAB environment.
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