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首页> 外文期刊>Electric power systems research >Direct power control of electrical energy storage systems: A passivity-based PI approach
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Direct power control of electrical energy storage systems: A passivity-based PI approach

机译：电能存储系统的直接功率控制：基于无源性的PI方法

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This paper proposes a direct power control for electrical energy storage systems (EESS) in ac microgrids. This strategy allows managing instantaneous active and reactive power without using a conventional inner-loop current regulator and without a phase-locked loop, increasing the reliability of the system while reducing investment costs. PI passivity-based control (PI-PBC) is selected to control the direct power model of EESS. This is because their models exhibit a port-Hamiltonian formulation in open-loop, and PI-PBC exploits this formulation to design a PI controller, which guarantees global asymptotically stability in closed-loop in the sense of Lyapunov. Simulations tested the proposed model in a microgrid and compared with conventional vector oriented controls in a dq reference frame and a direct power model controlled via feedback linearization (FL). PI-PBC has a better performance than other two controllers in all considered scenarios. Simulation results have conducted through MATLAB/SIMULINK software by using the SimPowerSystem toolbox.
机译：本文提出了交流微电网中电能存储系统（EESS）的直接功率控制。该策略无需使用常规的内环电流调节器和锁相环即可管理瞬时有功功率和无功功率，从而提高了系统的可靠性，同时降低了投资成本。选择基于PI无源性的控制（PI-PBC）来控制EESS的直接功率模型。这是因为他们的模型在开环中显示了Port-Hamiltonian公式，而PI-PBC利用此公式设计了PI控制器，从而在Lyapunov的意义上保证了闭环的全局渐近稳定性。仿真在微电网中测试了所提出的模型，并与在dq参考框架中的传统面向矢量的控件以及通过反馈线性化（FL）控制的直接功率模型进行了比较。在所有考虑的情况下，PI-PBC的性能均优于其他两个控制器。使用SimPowerSystem工具箱通过MATLAB / SIMULINK软件进行了仿真结果。

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