DC Microgrid Technology: System Architectures, AC Grid Interfaces, Grounding Schemes, Power Quality, Communication Networks, Applications, and Standardizations Aspects

Kumar, Dinesh; Zare, Firuz; Ghosh, Arindam

doi:10.1109/access.2017.2705914

Cited by 608 publications

(296 citation statements)

References 120 publications

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“…Due to reshaping of modern society and increasing electricity demand, the power grid has experienced various topological changes. The new structures of power system are more complex and are with robust operational challenges . With recent advancements, the thermal generation is being replaced by the renewable energy (RE) sources due to depletion of fossil fuels, ever increasing fuel prices, and the impact of emissions on the environment .…”

Section: Introductionmentioning

confidence: 99%

“…The new structures of power system are more complex and are with robust operational challenges. 1 With recent advancements, the thermal generation is being replaced by the renewable energy (RE) sources due to depletion of fossil fuels, ever increasing fuel prices, and the impact of emissions on the environment. 2 The operational requirements have become further challenging with the advent of these sources.…”

Section: Introductionmentioning

confidence: 99%

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Modeling and operation optimization of RE integrated microgrids considering economic, energy, and environmental aspects

et al. 2019

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Summary Microgrids provide promising solution for integration of renewable energy sources in the electrical grid. To exploit the key benefits, achieving the economical operation of renewable aided microgrids has become necessary and is a challenging task. This paper presents an efficient optimization model to minimize the operational cost of a solar integrated microgrid. We formulate a joint optimization mixed integer problem for appropriate modeling of the system under various practical constraints. An efficient solution is obtained with a distributed approach such that the original problem is solved in two stages. Dual decomposition approach is adopted for cost, emissions, and solar share optimization. Lagrange relaxation, Lambda iteration method, and binary integer programming are employed to obtain the joint optimization solution. Finally, the performance of the proposed model is validated through simulations that show that an overall cost reduction of 4.2070e+04 $ and emission reduction of 7.2001e+03 kg are achieved with the proposed model.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Modeling and operation optimization of RE integrated microgrids considering economic, energy, and environmental aspects

et al. 2019

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“…1 As a matter of fact, increasing implementation of DC microgrids led to its application in various control problems in grid connected and autonomous mode. The widespread application of renewable energy-based islanded microgrid system for remote rural areas allows direct integration of DC-based renewable energy resources to DC loads with additional advantages such as elimination of synchronisation, multistage power conversion issues, enhanced stability, reliability, controllability, and power quality during grid disturbances.…”

Section: Introductionmentioning

confidence: 99%

“…The widespread application of renewable energy-based islanded microgrid system for remote rural areas allows direct integration of DC-based renewable energy resources to DC loads with additional advantages such as elimination of synchronisation, multistage power conversion issues, enhanced stability, reliability, controllability, and power quality during grid disturbances. 1 As a matter of fact, increasing implementation of DC microgrids led to its application in various control problems in grid connected and autonomous mode.…”

Section: Introductionmentioning

confidence: 99%

Robust optimisation‐based order reduction and stability analysis of autonomous DC microgrid with consideration of non‐linearity

Juneja

Mohanty

Nagar

2019

Int Trans Electr Energ Syst

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The reduced‐order modelling in the context of timescale separation of DC microgrid based on discrimination of fast and slow states is an important concept that is implemented in this paper. DC microgrid composing of fuel cell, which has inherent sluggish response than that of other components, such as PV and battery, which has faster response, forms an important basis for timescale separation. Further, the states associated with high non‐linearity that does exist in fuel cell are retained intact while the rest of the electrical components have been reduced by robust optimization through mixed H2/H∞ norm by Particle Swarm Optimization (PSO) algorithm. The feasibility of nonlinear stability analysis, on the contrary to small signal analysis of the reduced‐order system, is addressed by Input to State stability (ISS) criteria, which guarantee Bounded Input Bounded State (BIBS) stability. Series of simulation results and different theorems addresses the objective implemented.

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“…Power electronic systems with a variable gain are required to interface different renewable energy sources or storage systems into the microgrid [1]. Converters with transformers are often preferred due to reduced stresses on the components and better flexibility of application [2], [3].…”

Section: Introductionmentioning

confidence: 99%

Asymmetric snubberless current-fed full-bridge isolated DC-DC converters

Kosenko

Blinov

Vinnikov

et al. 2018

Electrical, Control and Communication Engineering

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-This paper presents two isolated current-fed fullbridge DC-DC converters that can be used to interface a lower voltage source into a DC bus of higher voltage. The first topology uses a resonant circuit to force current redistribution between low-voltage-side transistors and a passive rectifier. The second topology utilizes an active rectifier with secondary modulation to achieve the same goal. The resonant circuit can be formed by using transformer leakage inductance and the parasitic capacitances of the switches. The converters feature soft switching of semiconductors over a wide range of operating conditions. This is achieved with decreased energy circulation when compared to existing topologies with symmetric control and with fewer semiconductors than in those with phase-shift control. The topologies can be implemented in renewable, supercapacitor, battery, fuel cell, and DC microgrid applications. Steady-state operation and design aspects of the converters are presented and verified experimentally with 400 W prototypes.

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DC Microgrid Technology: System Architectures, AC Grid Interfaces, Grounding Schemes, Power Quality, Communication Networks, Applications, and Standardizations Aspects

Cited by 608 publications

References 120 publications

Modeling and operation optimization of RE integrated microgrids considering economic, energy, and environmental aspects

Modeling and operation optimization of RE integrated microgrids considering economic, energy, and environmental aspects

Robust optimisation‐based order reduction and stability analysis of autonomous DC microgrid with consideration of non‐linearity

Asymmetric snubberless current-fed full-bridge isolated DC-DC converters

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