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
An Integrated Security-Constrained Model-Based Dynamic Power Management Approach for Isolated Microgrids in All-Electric Ships
TL;DR: In this article, a novel integrated security-constrained model-based power management approach is proposed for isolated microgrids in all-electric ships during the normal/alert operating state.
Proceedings ArticleDOI
Real-time grid impedance estimation technique for grid-connected power converters
TL;DR: The basic idea lies in the inherent switching feature of the grid-connected power converter, which means the grid impedance can be easily estimated with no need of the intentionally injected disturbance signals anymore.
Journal ArticleDOI
Improved Design of High-Performance Controller for Voltage Control of Islanded Microgrid
TL;DR: The design of a high-performance second-order controller for voltage control of a single- and three-phase islanded microgrid under different loads and fault conditions is presented using the results of robust negative imaginary approach.
Journal ArticleDOI
Dynamic Microgrids With Self-Organized Grid-Forming Inverters in Unbalanced Distribution Feeders
TL;DR: A distributed secondary control strategy is developed in this article for distributed generators (DGs) interfaced with grid-forming inverters in unbalanced dynamic MGs by providing coordinated regulations on both positive- and negative-sequence system models.
Journal ArticleDOI
Investigations on shunt active power filter in a PV-wind-FC based hybrid renewable energy system to improve power quality using hardware-in-the-loop testing platform
Kumar Ravinder,Hari Om Bansal +1 more
TL;DR: This paper presents an intelligently controlled hybrid energy system (HES) integrated with shunt active power filter (SAPF) to address the power quality problems of the current power distribution system.
References
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Journal ArticleDOI
Output impedance design of parallel-connected UPS inverters with wireless load-sharing control
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