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Fractional Order Control with Super Twisting Observer for AC Microgrid

机译：AC微电网超扭曲观测器的分数控制

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摘要

In this paper, a fractional-order continuous control with a modified super twisting disturbance observer (STDO) for a microgrid (MG) is proposed. Transient accuracy under finite-time control is a challenging issue in Islanded MG with strong disturbance rejection. sliding mode control (SMC) with conventional Sliding surface design exhibits asymptotic response with chattering contamination in the control signal. If the terminal surface is used for finite-time control, singularity and chattering problem may occur. In order to achieve chattering free finite time response with no singularity problem, fractional second-order continuous control (FSCC) is proposed with STDO. In this paper, FSCC is primarily designed to improve transient response with finite-time control. Next, STDO is utilized to achieve strong robustness against disturbance with comprehensive chattering elimination by adding a fractional term. To capitalize on optimal control effort, event-triggering control is implemented. Stability proof and event trigger conditions are derived using rigorous Lyapunov based analysis. The efficacy of the proposed controller is tested under MATLAB/Simulink.
机译：在本文中，提出了一种具有用于微电网（MG）的改进的超扭转干扰观察者（STDO）的分数顺序连续控制。有限时间控制下的瞬态精度是岛屿MG具有强烈扰动拒绝的挑战性问题。具有常规滑动表面设计的滑模控制（SMC）具有在控制信号中的抖动污染的渐近响应。如果终端表面用于有限时间控制，则可能发生奇点和抖动问题。为了实现没有奇点问题的抖动有限时间响应，提出了使用STDO的分数二阶连续控制（FSCC）。在本文中，FSCC主要旨在提高有限时间控制的瞬态响应。接下来，利用STDO来实现通过添加分数术语来实现对骚扰的强大稳健性。为了利用最佳控制工作，实现了事件触发控制。使用基于Ryapunov的分析来导出稳定性证据和事件触发条件。在Matlab / Simulink下测试所提出的控制器的功效。

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