Results 111 to 120 of about 8,229 (157)
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A review of droop control techniques for microgrid
Renewable and Sustainable Energy Reviews, 2017Abstract Coordination of different distributed generation (DG) units is essential to meet the increasing demand for electricity. Many control strategies, such as droop control, master-slave control, and average current-sharing control, have been extensively implemented worldwide to operate parallel-connected inverters for load sharing in DG network ...
Usman Bashir Tayab, Muhammad Kashif
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Filter Deballasting Control of Droop-Controlled Inverters
IEEE Transactions on Power Electronics, 2021In microgrids with droop-controlled inverters, the supervisory controller must the tune the droop gains in real time to maintain stability as the system topology or the number of inverters change. Stability could be compromised due to delays in the dispatch of supervisory control inputs or due to communication link failures.
Gurupraanesh Raman +1 more
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Decoupled droop control of inverters
IECON 2013 - 39th Annual Conference of the IEEE Industrial Electronics Society, 2013This article first reviews the droop control method for inverters participating in low voltage microgrids, discussing static and dynamic response. Then the paper proposes a droop controller that brings independent actuation of frequency over active power and voltage over reactive power.
Jeronimo Quesada +3 more
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Virtual Oscillator Control subsumes droop control
2015 American Control Conference (ACC), 2015In this paper we examine the amplitude and phase dynamics of power-electronic inverters in islanded microgrids that are controlled to emulate the dynamics of a class of weakly nonlinear Lienard-type oscillators. The general strategy of controlling inverters to emulate the behavior of Lienard-type oscillators is termed Virtual Oscillator Control (VOC ...
Mohit Sinha +3 more
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Droop-free control for networked microgrids
2016 IEEE Conference on Control Applications (CCA), 2016This paper presents a frequency control strategy for networked micogrids. Applying a hierarchical control structure, the usual droop-control for AC microgrids is replaced by a droop-free paradigm that acts as a first and second level control. To control the frequency of the networked microgrid system, a third control level is introduced to control the ...
Vladimir Toro, Eduardo Mojica-Nava
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Comparison of Performances between Angle Droop Control and Frequency Droop Control in Microgrids
2019 IEEE 3rd International Electrical and Energy Conference (CIEEC), 2019Compared with frequency droop control, angle droop control avoids frequency deviation, but it is hard to share active power exactly among distributed generations (DGs). Although this defect can be solved by secondary control, frequency droop control also has a similar way to eliminate frequency deviation.
Weiqiang Yao +5 more
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Droop control of a multifunctional PV inverter
2008 IEEE International Symposium on Industrial Electronics, 2008Implementation of ancillary services in photovoltaic systems could facilitate their penetration in power systems. PV converters can be designed to improve grid power quality using power conditioning functionalities. This paper presents a single-phase photovoltaic system which provides grid voltage support at fundamental frequency. The proposed topology
MASTROMAURO, ROSA ANNA +4 more
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Dynamics of droop-controlled microgrids with unequal droop response times
2013 Australasian Universities Power Engineering Conference (AUPEC), 2013One increasingly popular approach to integrate distributed generation (DG) energy sources into an electrical grid system, is to assemble them into microgrids which then connect to the main utility grid at a single or multiple points of connection. A microgrid can also operate as a standalone islanded network which is physically disconnected from the ...
B. Shoeiby +3 more
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Nonlinear supersets to droop control
2015 IEEE 16th Workshop on Control and Modeling for Power Electronics (COMPEL), 2015This paper offers a suite of extensions to Virtual Oscillator Control — a time-domain control method for islanded inverters whereby they are controlled to emulate the dynamics of weakly nonlinear limit-cycle oscillators. First, we develop a coordinate transformation to derive the PWM switching signals from the oscillator dynamic states in a manner that
Mohit Sinha +4 more
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Load Support by Droop-Controlled Distributed Generations
IEEE Transactions on Industrial Electronics, 2021Due to the proliferation of distributed generations (DGs), the issue of cooperating them with already existed synchronous generators (SGs) in power grids should be considered and analyzed adequately. Concerning the slow response behavior of SGs, large load changes cannot be quickly compensated by them, resulting in significant deviations in their ...
Yonghui Ling, Yanjun Li, Ji Xiang
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