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A Cascade Voltage Controller for Three-phase Islanded Microgrids

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In this paper, we propose a new hierarchical control scheme for microgrid (MG) clusters, given by the interconnection of atomic dc MGs with ZIP loads, each composed by both grid-forming and grid-feeding converters. In the primary level, we develop a new Pl ...

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC2019

The energy transition's ultimate goal is to meet energy demand from human activities sustainably. Accordingly, the penetration of new renewable energy sources (RES) such as photovoltaic panels and wind turbines is increasing in most power grids. In their c ...

IEEE2019

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We consider the application of passivity theory to the problem of voltage stabilization in DC microgrids (DCmGs) given by the interconnection of Distributed Generation Units (DGUs), dynamic RL lines, and loads. We first provide a novel result on stable int ...

IEEE2018

Flexibility, particularly in terms of reserve services, is an essential requirement of power systems with high penetration of renewable electrical generation, which can reduce undesirable curtailment and enable higher integration of clean electrical power ...

IEEE2018

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In real-time control of electric grids using multiple software agents, the control performance depends on (1) the proper functioning of the software agents, i.e., absence of software faults, and (2) the behavior of software agents in the presence of non-id ...

ACM2018

Upon an intentional or emergency disconnection from the main grid, a microgrid is expected to continue working in islanded mode. Thus, (at least) one resource needs to act as slack and compensate for power variations to keep the power balance, and ensure t ...

IEEE2018

A Passivity-Based Approach to Voltage Stabilization in DC Microgrids with ZIP loads

Giancarlo Ferrari Trecate, Pulkit Nahata, Michele Tucci, Raffaele Soloperto, Andrea Martinelli

We consider the application of passivity theory to the problem of voltage stabilization in DC microgrids, which are composed of distributed generation units, dynamic RLC lines, and nonlinear ZIP (constant impedance, constant current, and constant power) lo ...

2018

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2018

Technologies for Integration of Large-Scale Distributed Generation and Volatile Loads in Distribution Grids

Jean-Yves Le Boudec, Mario Paolone, Jagdish Prasad Achara

As fossil fuel reserves are limited in stock and there is an urgent call to reduce the carbon footprint, distribution grids urgently need to move towards heavy use of local and distributed generation of electricity using renewable energy sources. Another p ...

2018

Advanced Droop Control in Islanded Microgrids Using Dynamic Phasor Models

Alireza Karimi, Christoph Manuel Kammer

A dynamic phasor model for low- and medium-voltage distribution grids is presented. This model accurately represents the transient dynamics of this type of grid, and its low order makes it well suited for control design. A novel fixed-structure, robust con ...

2017