Design and quasi-equilibrium analysis of a distributed frequency-restoration controller for inverter-based microgrids
Design and quasi-equilibrium analysis of a distributed frequency-restoration controller for inverter-based microgrids
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基于逆变器的微电网分布式频率恢复控制器的设计与准平衡分析
DOI：
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
S. Grijalva
中科院分区：
文献类型：
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作者：
N. Ainsworth;S. Grijalva
本文讨论了一种提出的频率恢复控制器，它作为电压源逆变器频率下垂的外环运行。通过准平衡分析，我们表明所提出的控制器能够在逆变器之间保持功率共享的同时提供任意小的稳态频率误差，且无需通信或集中控制。我们推导了收敛速度，讨论了设计考虑因素（包括设计中必须做出的基本权衡），提出了满足最大频率误差要求的设计流程，并展示了验证我们分析和设计方法的仿真结果。所提出的控制器将使灵活的即插即用基于逆变器的网络能够满足指定的最大频率误差要求。
This paper discusses a proposed frequency-restoration controller which operates as an outer loop to frequency droop for voltage-source inverters. By quasi-equilibrium analysis, we show that the proposed controller is able to provide arbitrarily small steady-state frequency error while maintaing power sharing between inverters without need for communication or centralized control. We derive rate of convergence, discuss design considerations (including a fundamental trade-off that must be made in design), present a design procedure to meet a maximum frequency error requirement, and show simulation results verifying our analysis and design method. The proposed controller will allow flexible plug-and-play inverter-based networks to meet a specified maximum frequency error requirement.