A comparative efficiency study on bidirectional grid interface converters applied to low power DC nanogrids

Sathler, Hans Hoffmann; Sathler, Lara Hoffmann; Marcelino, Frederico L. F.; Oliveira, Thiago Ribeiro de; Seleme, Seleme Isaac; Garcia, Pedro Francisco Donoso

doi:10.1109/cobep.2017.8257219

Cited by 12 publications

(6 citation statements)

References 16 publications

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“…For the system operating in steady state, in rated conditions, (1) and (5) and show the same results. However, for a system evolving in transients, the energies involved in a given interval must be considered, as the efficiency varies depending on the operating conditions.…”

Section: Methodsmentioning

confidence: 52%

“…A more generic definition of efficiency, can be obtained through the integration of the instantaneous power along a given time (i.e. energy, E) of expression (1). This yields to the following expression where sub-index Loss stands for losses:…”

Section: Methodsmentioning

confidence: 99%

“…The analysis of the efficiency in power converters is a complex task that depends largely on the application and ratings, the operating conditions, the accuracy of the analytical and simulation models considered, etc. [1]- [4]. The basic methodology characterizes the efficiency (ηd) of a any general system able to process energy, as a function of the steady-state average rated input and output power values (PI and PO, respectively), as given by:…”

Section: Introductionmentioning

confidence: 99%

“…Examples of applications are Photovoltaic (PV) systems (with varying irradiance), powertrain converters in Electric Vehicles (EVs) (with varying load profiles), storage systems in microgrids (with random load and generation profiles), etc. [1]- [10].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Efficiency Comparison in Power Converters Under Transient Operation Conditions: Application to Hybrid Energy Storage Systems

Garcia

González-Morán

Fernández

et al. 2018

2018 IEEE Energy Conversion Congress and Exposition (ECCE)

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This work proposes a methodology for selecting the optimal configuration, in terms of energy efficiency, in power conversion applications. The outcomes of the selection are both the power topology among different options, together with a set of parameters for the design variables for that topology ensuring the highest efficiency for the target operating conditions. An example of this methodology is provided for a Hybrid Energy Storage System application in a given nanogrid. Two options for the power converter topology are presented, and also each of them is assessed in two basic operation modes: islanding mode and transient support mode. The final methodology provides a tool for selecting among the optimal power topology design considering the total efficiency of the system.

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Section: Methodsmentioning

confidence: 52%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Efficiency Comparison in Power Converters Under Transient Operation Conditions: Application to Hybrid Energy Storage Systems

Garcia

González-Morán

Fernández

et al. 2018

2018 IEEE Energy Conversion Congress and Exposition (ECCE)

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“…The purpose of this system was to determine the greatest efficiency during LV bus-supplied load in the HV bus, and vice versa, with 1 kW load capacity. Sathler et al (2017) discussed bidirectional grid interface converters (BGIC), which are responsible for the integration of DC nanogrids with the utility distribution system, managing the power exchange, complying with grid requirements, and protecting nanogrids from grid disturbances. In their study, BGICs converted 127 VAC from the utility grid to 380 VDC DC voltage, with a power capacity of 2 kW.…”

Section: Methodsmentioning

confidence: 99%

Performance Test of 2.5 kW DC Boost Converter for Nanogrid System Applications

Andreas¹,

Setiawan²,

Halim³

et al. 2018

IJTech

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The development of power electronics continues to grow rapidly. One type of power electronics is the DC boost converter, which steps up DC voltage to another level. DC boost converters are widely used in many applications; for renewable energy, DC boost converters are very useful for stepping up DC voltage levels from nonconventional energy resources, such as photovoltaics, wind turbines, and fuel cells, to the main system. In this study, we tested a DC boost converter that has been developed to step up 48 VDC from energy storage to 235 VDC in the main bus. The DC boost converter will be used in the nanogrids system, developed by TREC and will supply household appliances such as televisions, lamps, laptops, and mobile phones. The performance tests showed between +3% and-1.2% of voltage deviation and 66-98% efficiency.

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A Methodology for the Assessment of Efficiency in Systems Under Transient Conditions: Case Study for Hybrid Storage Systems in Elevators

Garcia

González-Morán

Garcı́a

et al. 2022

Springer Optimization and Its Applications

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A comparative efficiency study on bidirectional grid interface converters applied to low power DC nanogrids

Cited by 12 publications

References 16 publications

Efficiency Comparison in Power Converters Under Transient Operation Conditions: Application to Hybrid Energy Storage Systems

Efficiency Comparison in Power Converters Under Transient Operation Conditions: Application to Hybrid Energy Storage Systems

Performance Test of 2.5 kW DC Boost Converter for Nanogrid System Applications

A Methodology for the Assessment of Efficiency in Systems Under Transient Conditions: Case Study for Hybrid Storage Systems in Elevators

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