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	Sterowanie opadające	Przepływ mocy optymalny	Pętla zsynchronizowana fazowo (PLL)
Dziedzina	Elektrotechnika	Elektrotechnika	Elektrotechnika
Rodzina	Process / pipeline	Process / pipeline	Process / pipeline
Rok powstania	2013	1962	1966
Twórca	Juan M. Guerrero	Jean Carpentier	Floyd M. Gardner
Typ	Decentralized control for synchronous operation of distributed generators	Nonlinear constrained optimization for power system operation	Feedback control loop for frequency and phase synchronization
Źródło pierwotne	Guerrero, J. M., Vasquez, J. C., Matas, J., Castilla, M., & de Vicuña, L. G. (2013). Hierarchical control of droop-controlled AC and DC microgrids. IEEE Transactions on Power Electronics, 28(11), 4915-4933.	Carpentier, J. (1962). Contribution à l'étude du dispatching économique. Bulletin de la Société Française des Électriciens, 8(3), 431-447.	Gardner, F. M. (1966). Phaselock Techniques. Wiley & Sons.
Inne nazwy	Frequency droop, Voltage droop, Decentralized control	OPF, Economic Dispatch with Constraints	PLL, Phase lock, Frequency synchronizer
Pokrewne	3	3	3
Podsumowanie	Droop Control is a decentralized control method that enables independent generators (inverters, microgrids) to operate synchronously without direct communication. Introduced by Guerrero et al. in 2013 for microgrids, droop control uses frequency and voltage deviations as signals to share power. By making generator output depend on frequency and voltage (like synchronous generators), microgrids achieve plug-and-play operation. Essential for modern distributed energy resources and grid resilience.	Optimal Power Flow (OPF) is a fundamental optimization framework for computing the most economical and secure operating point of an electrical power system. Introduced by Jean Carpentier in 1962, OPF minimizes operational costs (fuel, losses, or other expenses) while satisfying physical and operational constraints. Modern electric grids depend on OPF for real-time economic dispatch, security analysis, and planning, making it one of the most important problems in power systems engineering.	A Phase-Locked Loop (PLL) is a feedback control system that synchronizes an output oscillator to match the phase and frequency of an input signal. Introduced by Gardner in 1966, PLLs are ubiquitous in communications, radar, clock distribution, and power systems. The PLL continuously adjusts its oscillator frequency to minimize the phase error with the input, achieving lock. PLLs are fundamental to modern electronic systems.