Switching frequency determination of a bidirectional AC–DC converter to improve both power factor and efficiency

Georgakas, Konstantinos G.; Safacas, A.

doi:10.1016/j.epsr.2011.03.002

Cited by 4 publications

(1 citation statement)

References 27 publications

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“…Another important objective of this paper is to explore the possibility of optimizing the efficiency of the converter. Several design parameters play a role in enhancing efficiency, including the selection of power devices, operating frequency, and the design of magnetic components [21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Optimal Design of a Single-Phase Bidirectional Rectifier

Esteve,

Bellido,

Jordán

2024

Energies

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This article outlines the comprehensive design and control approach for a single-phase bidirectional rectifier (SPBR) used in bidirectional charging of electric vehicle batteries. The operational parameters of the inverter are determined through a thorough analysis of all switching sequences to accurately assess power losses, considering the type of switching device chosen in each case, enabling proper component sizing, and understanding converter efficiency. An exclusive electronic control circuit is examined, governing two converter operation modes: boost rectifier with power factor correction (PFC) and sine pulse inverter width modulation (SPWM) with a minimum number of adjustments made automatically. One problem that arises when addressing the design of an SPBR is determining the operating frequency. To address this issue, this study offers to conduct a comparative analysis of losses using various power devices and magnetic circuits to determine the optimal operating frequency for achieving maximum energy efficiency. To validate the design’s feasibility, a prototype with 10 kW output power was constructed, achieving a peak efficiency of approximately 97.5% in both directions, unity power factor (PF), and total harmonic distortion (THD) of less than 7% during full power operation.

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Section: Introductionmentioning

confidence: 99%

Optimal Design of a Single-Phase Bidirectional Rectifier

Esteve,

Bellido,

Jordán

2024

Energies

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A single-stage voltage sensorless power factor correction converter for LED lamp driver

El-Moniem¹,

Azazi

Mahmoud

2013

Alexandria Engineering Journal

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Digital control of bidirectional DC-DC converters in Smart Grids

Pătărău

Petreuş

Etz

et al. 2012

2012 13th International Conference on Optimization of Electrical and Electronic Equipment (OPTIM)

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The interest in the development towards intelligent microgrids which use renewable energy as primary sources has significantly increased in the last two years. The present paper examines and proposes a new digital control solution for bidirectional DC-DC converters. In order to control the converter in both directions the novel algorithm uses the current that charges and discharges the storage devices. The study treats and solves problems related to the battery charging algorithms and the power flow direction change.

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Switching frequency determination of a bidirectional AC–DC converter to improve both power factor and efficiency

Cited by 4 publications

References 27 publications

Optimal Design of a Single-Phase Bidirectional Rectifier

Optimal Design of a Single-Phase Bidirectional Rectifier

A single-stage voltage sensorless power factor correction converter for LED lamp driver

Digital control of bidirectional DC-DC converters in Smart Grids

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