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首页> 外文期刊>IET Smart Grid >Robust adaptive H-infinity based controller for islanded microgrid supplying non-linear and unbalanced loads
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Robust adaptive H-infinity based controller for islanded microgrid supplying non-linear and unbalanced loads

机译：基于强大的自适应H-Infinity基于孤岛微电网的控制器，供应非线性和不平衡负载

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摘要

This study introduces a proposed control method for microgrids (MGs) in islanded (off-grid) mode. The proposed control method is developed by modifying the droop control method using H-infinity controller. In this control method, the droop control loop, current and voltage control loops are adjusted to respond to system load variation. The proposed method is an adaptive control one as it regulates the system voltage and frequency to their nominal values after system load variations. Also, it is a repetitive control method as it depends on the internal model principle that provides good performance for voltage and current error tracking. To prove the applicability and effectiveness of the proposed method, it is applied to a test system using MATLAB/Simulink under three different loading conditions. The results are compared with those of droop control and they prove the effectiveness of the proposed method in adjusting MGs under the off-grid mode of operation. Also, a system stability analysis is performed based on root locus and system step response. Robustness analysis is performed to prove the ability of the proposed controller to restore the system performance after the fault clearance.
机译：本研究介绍了孤岛（离网）模式中的微电网（MGS）的提出控制方法。所提出的控制方法是通过使用H-Infinity控制器修改下垂控制方法来开发的。在该控制方法中，调整下垂控制回路，电流和电压控制环以响应系统负载变化。该方法是自适应控制器，因为它在系统负载变化后调节系统电压和频率到标称值。此外，它是一种重复的控制方法，因为它取决于内部模型原理，可提供电压和电流误差跟踪的良好性能。为了证明所提出的方法的适用性和有效性，它将在三种不同的装载条件下应用于使用MATLAB / Simulink的测试系统。将结果与下垂控制的结果进行比较，并且他们证明了所提出的方法在散网运行模式下调整MGS的有效性。此外，基于根轨迹和系统步骤响应执行系统稳定性分析。执行鲁棒性分析以证明所提出的控制器在故障间隙后恢复系统性能的能力。

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