Nonisolated High Gain DC–DC Converter for DC Microgrids

Lakshmi, M.; Hemamalini, S.

doi:10.1109/tie.2017.2733463

Cited by 262 publications

(208 citation statements)

References 28 publications

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“…The high voltage gain of 32 is achieved with the duty ratio of D 1 = 0.6 and D 2 = 0.35, conventional boost converter provides a voltage gain of 2.5 and 4 for the same duty ratio of 0.6. The detailed steady state analysis of the converter is presented in Reference. In Reference, the authors completed the open loop simulation and hardware implementation for the prototype model of converter for 100 W, 20/200 V. This converter is suitable for DC microgrid by employing proper control method, to regulate the output voltage; they concluded.…”

Section: Non‐isolated High Gain Dc‐dc Convertermentioning

confidence: 99%

Energy management of distributed renewable energy sources for residential DC microgrid applications

Kathiresan¹,

Natarajan²,

Gnanavadivel³

2019

Int Trans Electr Energ Syst

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This paper proposes a low voltage (400 Vdc) distributed renewable energy fed DC microgrid structure for a residential system, which uses DC voltage for the electronic appliances. The distributed energy sources—solar photovoltaic (PV) and wind energy are considered as input sources. The output power from these sources is stochastic in nature. An efficient energy management and switching circuit is designed to control the power flow from the sources with a high gain DC‐DC converter as the main component. The output power regulation is achieved by means of controlling duty ratios of the switches in the proposed high gain converter through PI controller. The control algorithm effectively converts the unregulated DC power from the solar PV and wind into regulated DC for driving a DC load connected in DC‐microgrid. The energy management and switching circuits account for seamless operation of the DC microgrid under various modes when one or all the sources and loads are connected directly at the DC grid link. The designed energy management and switching circuit also ensures the power balancing in the proposed system. The proposed DC microgrid structure is simulated using MATLAB Simulink. The performance of the proposed high gain converter for the DC grid link voltage regulation is analyzed under source power variation and dynamic changes in load for various operating conditions. The proposed DC microgrid structure is validated using simulation results.

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Section: Non‐isolated High Gain Dc‐dc Convertermentioning

confidence: 99%

Energy management of distributed renewable energy sources for residential DC microgrid applications

Kathiresan¹,

Natarajan²,

Gnanavadivel³

2019

Int Trans Electr Energ Syst

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“…Types of DC/DC converters [18,19] may vary but the control can be generalized into two categories: voltage control mode and current control mode (power control mode). The DC/DC converter under voltage control mode sets the voltage reference and operates as a controllable voltage source.…”

Section: Dc/dc Convertermentioning

confidence: 99%

Primary and secondary control in DC microgrids: a review

Gao

Kang²,

Cao

et al. 2018

J. Mod. Power Syst. Clean Energy

215

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With the rapid development of power electronics technology, microgrid (MG) concept has been widely accepted in the field of electrical engineering. Due to the advantages of direct current (DC) distribution systems such as reduced losses and easy integration with energy storage resources, DC MGs have drawn increasing attentions nowadays. With the increase of distributed generation, a DC MG consisting of multiple sources is a hot research topic. The challenge in such a multi-source DC MG is to provide voltage support and good power sharing performance. As the control strategy plays an important role in ensuring MG's power quality and efficiency, a comprehensive review of the state-of-art control approaches in DC MGs is necessary. This paper provides an overview of the primary and secondary control methods under the hierarchical control architecture for DC MGs. Specifically, inner loop and droop control approaches in primary control are reviewed. Centralized, distributed, and decentralized approach based secondary control is discussed in details. Key findings and future trends are also presented at last.

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“…The direct current (DC)-DC converters play an important role in microgrids (MGs) and hybrid energy systems (HESs), where various energy types are integrated for load power provision. [1][2][3][4] The fuel cells (FCs) or renewable energy sources like solar energy (photovoltaic [PV]) can be applied in MGs or HESs. The high step-up capability and continuous (low ripple) input current requirements are necessary for the DC-DC converters that are applied in PV (or FC) applications.…”

Section: Introductionmentioning

confidence: 99%