Journal ArticleDOI
Hierarchical control of droop-controlled DC and AC microgrids — a general approach towards standardization
Josep M. Guerrero,Juan C. Vasquez,Jose Matas,L.G. de Vicuna,Miguel Castilla +4 more
- Vol. 58, Iss: 1, pp 158-172
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TLDR
The hierarchical control derived from ISA-95 and electrical dispatching standards to endow smartness and flexibility to MGs is presented and results are provided to show the feasibility of the proposed approach.Abstract:
DC and AC Microgrids are key elements to integrate renewable and distributed energy resources as well as distributed energy storage systems. In the last years, efforts toward the standardization of these Microgrids have been made. In this sense, this paper present the hierarchical control derived from ISA-95 and electrical dispatching standards to endow smartness and flexibility to microgrids. The hierarchical control proposed consist of three levels: i) the primary control is based on the droop method, including an output impedance virtual loop; ii) the secondary control allows restoring the deviations produced by the primary control; and iii) the tertiary control manage the power flow between the microgrid and the external electrical distribution system. Results from a hierarchical-controlled microgrid are provided to show the feasibility of the proposed approach.read more
Citations
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Journal ArticleDOI
A Novel Distributed Secondary Coordination Control Approach for Islanded Microgrids
TL;DR: A finite time frequency regulation strategy containing a consensus-based distributed active power regulator is presented, which can not only guarantee the active power sharing but also enable all DGs’ frequencies to converge to the reference value within a finite time.
Journal ArticleDOI
Power management of an isolated hybrid AC/DC micro-grid with fuzzy control of battery banks
TL;DR: In this article, a supervisory control scheme for power management and operation of an isolated hybrid AC/DC micro-grid, which consists of an AC microgrid and a DC microgrid, was developed.
Journal ArticleDOI
A Virtual Inertia Control Strategy for DC Microgrids Analogized With Virtual Synchronous Machines
Wu Wenhua,Yandong Chen,An Luo,Leming Zhou,Zhou Xiaoping,Yang Ling,Yanting Dong,Josep M. Guerrero +7 more
TL;DR: A virtual inertia control strategy through bidirectional grid-connected converters (BGCs) analogized with virtual synchronous machine (VSM) is proposed to enhance the inertia of the DC-MG, and to restrain the dc bus voltage fluctuation.
Journal ArticleDOI
Transition From Islanded to Grid-Connected Mode of Microgrids With Voltage-Based Droop Control
TL;DR: In this paper, the voltage-based droop (VBD) control is developed for islanded lowvoltage microgrids with a high share of renewable energy sources to enable a smooth transition between the islanded and the grid-connected mode of the microgrid.
A Decentralized Control Method for a Low-Voltage
TL;DR: A control strategy is proposed for a DC-MG to achieve perfect power sharing considering the effects of line resistances and the state of charge of the batteries is also considered in the power sharing strategy.
References
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TL;DR: In this article, a control scheme for parallel-connected inverters in a standalone AC supply system is presented, which uses feedback of only those variables that can be measured locally at the inverter and does not need communication of control signals between the inverters.
Journal ArticleDOI
Output impedance design of parallel-connected UPS inverters with wireless load-sharing control
TL;DR: This paper deals with the design of the output impedance of uninterruptible power system (UPS) inverters with parallel-connection capability, and proposes novel control loops to achieve both stable output impedance and proper power balance.