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Disturbance-rejection voltage control of an isolated microgrid by invariant sets

机译：不变集的孤立的Microgrid的扰动抑制电压控制

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摘要

New disturbance-rejection control for an islanded microgrid (MG) is presented in this study. The proposed method can be used with MGs consisting of several distributed generation (DG) units and local loads with both grid-connected and islanded modes capability. The proposed controller utilises state feedback with integral control to track the desired voltage. The uncertainty of the load parameters is tackled as a disturbance. The proposed controller is designed using the method of invariant ellipsoids to guarantee robust stability, fast transient response and zero steady-state error. The controller synthesis is formulated as a convex optimisation problem that is effectively solved using linear matrix inequality methods. The performance of the proposed MG voltage controller is assessed by several simulations in the presence of random load variations, load unbalances and step changes in the voltage reference. Moreover, the power mismatch during accidental islanding event is also considered.
机译：本研究介绍了岛状微电网（MG）的新扰动控制。所提出的方法可以与MGS一起使用，包括几种分布式发电（DG）单元和具有网格连接和岛状模式能力的本地负载。所提出的控制器利用具有整体控制的状态反馈以跟踪所需电压。负载参数的不确定性作为干扰。所提出的控制器采用不变椭圆体的方法设计，以保证稳定的稳定性，快速瞬态响应和零稳态误差。控制器合成被配制成使用线性矩阵不等式方法有效解决的凸优化问题。所提出的MG电压控制器的性能在随机负载变化的存在下进行若干模拟评估，负载不平衡和电压参考的步骤变化。此外，还考虑了意外岛屿事件期间的功率不匹配。

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