Irradiance-adaptive PV Module Integrated Converter for High Efficiency and Power Quality in Standalone and DC Microgrid Applications

Irradiance-adaptive PV Module Integrated Converter for High Efficiency and Power Quality in Standalone and DC Microgrid Applications Irradiance-adaptive PV Module Integrated Converter for High Efficiency and Power Quality in Standalone and DC Microgrid Applications Abstract— The strive for efficient and cost-effective photovoltaic systems motivated the power electronic design developed here. The work resulted in a DC-DC converter for module integration and distributed maximum power point tracking (MPPT) with a novel adaptive control scheme. The latter is essential for the combined features of high…

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Distributed Adaptive Droop Control for Optimal Power Dispatch in DC-Microgrid

Distributed Adaptive Droop Control for Optimal Power Dispatch in DC-Microgrid Distributed Adaptive Droop Control for Optimal Power Dispatch in DC-Microgrid Abstract— In this paper, a coordinated adaptive droop control is addressed for DC-microgrid to optimize its power distribution. The optimal solution for economical dispatch problem (EDP) of the microgrid is found through a fully distributed hierarchical control. The consensus based economical regulator calculating the optimal solution for the generator is fully distributed. Thus, it eliminates the requirement of centralized coordinator. The droop controller…

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Stochastic security and risk-constrained scheduling for an autonomous microgrid with demand response and renewable energy resources

Stochastic security and risk-constrained scheduling for an autonomous microgrid with demand response and renewable energy resources Stochastic security and risk-constrained scheduling for an autonomous microgrid with demand response and renewable energy resources Abstract: Increasing penetration of intermittent renewable energy sources and the development of advanced information give rise to questions on how responsive loads can be managed to optimise the use of resources and assets. In this context, demand response as a way for modifying the consumption pattern of customers can be effectively…

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Optimal Energy Management and Marginal Cost Electricity Pricing in Microgrid Network

Optimal Energy Management and Marginal Cost Electricity Pricing in Microgrid Network Optimal Energy Management and Marginal Cost Electricity Pricing in Microgrid Network   Abstract— The evolution of smart microgrid and its demandresponse characteristics not only will change the paradigms of the century-old electric grid but also will shape the electricity market. In this new market scenario, once always energy consumers, now may act as sellers due to the excess of energy generated from newly deployed renewable energy generators. In this paper, we propose…

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An Innovative Hybrid Wind-Solar and Battery-Supercapacitor Microgrid System—Development and Optimization

An Innovative Hybrid Wind-Solar and Battery-Supercapacitor Microgrid System—Development and Optimization An Innovative Hybrid Wind-Solar and Battery-Supercapacitor Microgrid System—Development and Optimization   Abstract— This paper presents a methodology for the joint capacity optimization of renewable energy (RE) sources, i.e, wind and solar, and state-of-the-art hybrid energy storage system (HESS) comprising of battery energy storage (BES) and super capacitor (SC) storage technology, employed in a grid-connected microgrid (MG). The problem involves multiple fields, i.e., RE, battery technology, SC technology, and control theory, and requires an…

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Bregman storage functions for microgrid control

Bregman storage functions for microgrid control Bregman storage functions for microgrid control   Abstract— In this paper we contribute a theoretical framework that sheds a new light on the problem of microgrid analysis and control. The starting point is an energy function comprising the “kinetic” energy associated with the elements that emulate the rotating machinery and terms taking into account the reactive power stored in the lines and dissipated on shunt elements. We then shape this energy function with the addition of an…

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Solar PV-based Scalable DC Microgrid for Rural Electrification in Developing Regions

Solar PV-based Scalable DC Microgrid for Rural Electrification in Developing Regions Solar PV-based Scalable DC Microgrid for Rural Electrification in Developing Regions   Abstract— In this paper, we detail the design, analysis, and implementation of a highly distributed off-grid solar photovoltaic DC microgrid architecture suitable for rural electrification in developing countries. The proposed architecture is superior in comparison with existing architectures for rural electrification because of its a) generation and storage scalability, b) higher distribution efficiency (because of distributed generation and distributed storage…

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Dynamic Analysis of Small Wind Turbines Frequency Support Capability in a Low Power Wind-Diesel Microgrid

Dynamic Analysis of Small Wind Turbines Frequency Support Capability in a Low Power Wind-Diesel Microgrid Dynamic Analysis of Small Wind Turbines Frequency Support Capability in a Low Power Wind-Diesel Microgrid   Abstract— When the wind power accounts for a large portion of the islanded microgrid power, it may need to support the ac bus frequency regulation. The increasing penetration of variable speed wind turbines (WT) in microgrids leads to a lower inertia, as the rotational speed of the turbine and the grid are…

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Optimal sizing of a wind/solar/battery hybrid grid-connected microgrid system

Optimal sizing of a wind/solar/battery hybrid grid-connected microgrid system Optimal sizing of a wind/solar/battery hybrid grid-connected microgrid system Abstract: Higher cost and stochastic nature of intermittent renewable energy (RE) resources complicate their planning, integration and operation of electric power system. Therefore, it is critical to determine the appropriate sizes of RE sources and associated energy storage for efficient, economic and reliable operation of electric power system. In this study, two constraint-based iterative search algorithms are proposed for optimal sizing of the wind turbine…

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Improved Frequency Regulation in an Islanded Mixed Source Microgrid through Coordinated Operation of DERs and Smart Loads

Improved Frequency Regulation in an Islanded Mixed Source Microgrid through Coordinated Operation of DERs and Smart Loads Improved Frequency Regulation in an Islanded Mixed Source Microgrid through Coordinated Operation of DERs and Smart Loads   Abstract— The advent of microgrids paved the way for energy decentralization and self-sufficiency among consumers. Reciprocating engine driven synchronous generators (also known as gensets) are one of the most commonly found distributed energy resources (DERs) installed in a microgrid. A key concern in microgrid operation is the frequency…

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