Control method based on DRFNN sliding mode for multifunctional flexible multistate switch

IF 1.9 Q4 ENERGY & FUELS Global Energy Interconnection Pub Date : 2024-04-01 DOI:10.1016/j.gloei.2024.04.007
Jianghua Liao , Wei Gao , Yan Yang , Gengjie Yang
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Abstract

To address the low accuracy and stability when applying classical control theory in distribution networks with distributed generation, a control method involving flexible multistate switches (FMSs) is proposed in this study. This approach is based on an improved double-loop recursive fuzzy neural network (DRFNN) sliding mode, which is intended to stably achieve multiterminal power interaction and adaptive arc suppression for single-phase ground faults. First, an improved DRFNN sliding mode control (SMC) method is proposed to overcome the chattering and transient overshoot inherent in the classical SMC and reduce the reliance on a precise mathematical model of the control system. To improve the robustness of the system, an adaptive parameter-adjustment strategy for the DRFNN is designed, where its dynamic mapping capabilities are leveraged to improve the transient compensation control. Additionally, a quasi-continuous second- order sliding mode controller with a calculus-driven sliding mode surface is developed to improve the current monitoring accuracy and enhance the system stability. The stability of the proposed method and the convergence of the network parameters are verified using the Lyapunov theorem. A simulation model of the three-port FMS with its control system is constructed in MATLAB/Simulink. The simulation result confirms the feasibility and effectiveness of the proposed control strategy based on a comparative analysis.

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基于 DRFNN 滑动模式的多功能柔性多态开关控制方法
针对将经典控制理论应用于分布式发电配电网络时精度和稳定性较低的问题,本研究提出了一种涉及柔性多态开关(FMS)的控制方法。该方法基于改进的双环递归模糊神经网络(DRFNN)滑动模式,旨在稳定地实现多终端功率互动和单相接地故障的自适应电弧抑制。首先,提出了一种改进的 DRFNN 滑动模式控制(SMC)方法,以克服经典 SMC 固有的颤振和瞬态过冲问题,并减少对控制系统精确数学模型的依赖。为了提高系统的鲁棒性,设计了 DRFNN 的自适应参数调整策略,利用其动态映射能力来改进瞬态补偿控制。此外,还开发了一种具有微积分驱动滑模曲面的准连续二阶滑模控制器,以提高电流监测精度并增强系统稳定性。利用 Lyapunov 定理验证了所提方法的稳定性和网络参数的收敛性。在 MATLAB/Simulink 中构建了三端口 FMS 及其控制系统的仿真模型。通过比较分析,仿真结果证实了所提控制策略的可行性和有效性。
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来源期刊
Global Energy Interconnection
Global Energy Interconnection Engineering-Automotive Engineering
CiteScore
5.70
自引率
0.00%
发文量
985
审稿时长
15 weeks
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