A Bidirectional AC/AC Series Resonant Converter with High Frequency Link

Pacheco, Lúcia Helena Martins; Barbi, I.

doi:10.1109/induscon.2018.8627182

Cited by 4 publications

(5 citation statements)

References 20 publications

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“…The AC-AC converter with high frequency isolation, using the LLC series resonant converter, is shown in Fig. 3 [18], and is composed of two stages. The first stage, formed by the power semiconductors Sa,b,c,d, the inductor Lf, and the capacitor Cf, is an folding bridge, which converts the sinusoidal voltage of 60 Hz at the input into a sinusoidal voltage rectified at its output with a frequency of 120 Hz (VCC).…”

Section: Proposed Convertermentioning

confidence: 99%

“…The last stage is an unfolding bridge, operating at a frequency of 60 Hz, and synchronized with the sinusoidal input supply voltage, generating a sinusoidal voltage in the load, which is a mirror image of the sinusoidal input voltage. Several other topologies, with their own advantages and disadvantages, make use of the LLC for converting AC-AC energy [15] - [18].…”

Section: Introductionmentioning

confidence: 99%

“…In order to reduce the number of semiconductors, the set formed by the output rectifier of the LLC resonant converter and the unfolding bridge, was replaced by a stage comprised of four-quadrant switches in [18]. A simplified description of the operation of the converter was presented, without experimental results.…”

Section: Introductionmentioning

confidence: 99%

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Isolated AC/AC Converter With LLC Resonant Converter High-Frequency Link and Four-Quadrant Switches in the Output Stage

2020

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An AC-AC converter with a high-frequency link employing an LLC resonant converter operating in the vicinity of the resonance frequency was studied, in which a single output power stage is used, formed by a high-frequency AC-AC converter employing four-quadrant switches. The topology, its operation and the modulation strategy are described. The high-frequency stage switches located on the primary side of the transformer operate with soft switching of the ZVS type, while the four-quadrant switches that form the output stage operate with soft switching of the ZCS type. Experimental data obtained with a 1.5 kW experimental prototype (input 220 VRMS, output 220 VRMS and switching frequency 40 kHz), which was designed, built and tested in the laboratory, are reported herein. This converter can be considered a candidate for the building block of medium voltage solid-state transformers (SST) for power distribution systems.

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Section: Proposed Convertermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Isolated AC/AC Converter With LLC Resonant Converter High-Frequency Link and Four-Quadrant Switches in the Output Stage

2020

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“…In order to reduce the number of semiconductors, the set formed by the output rectifier of the LLC resonant converter and the unfolding bridge, was replaced by a stage formed by four quadrant switches in [8], where a simplified description of the operation of the converter was presented, without experimental results. The studied topology, which is shown in Fig.…”

Section: Figure 1 Phase-controlled Ac-ac Converter With High Frequenc...mentioning

confidence: 99%

“…The AC-AC converter with high frequency isolation, using the LLC series resonant converter is shown in Fig. 3 [8], which is composed of two stages. The first stage, formed by the power semiconductors Sa,b,c,d, the inductor Lf, and the capacitor Cf, is an folding bridge, which converts the sinusoidal voltage of 60 Hz at the input into a sinusoidal voltage rectified at its output with frequency of 120 Hz (VCC).…”

Section: Proposed Convertermentioning

confidence: 99%

Isolated AC/AC Converter with LLC Resonant Converter High Frequency Link and Four-Quadrant Switches in the Output Stage

Pacheco¹,

Barbi²,

Nascimento³

2020

Preprint

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An AC-AC converter with high-frequency link employing LLC resonant converter operating in the vicinity of the resonance frequency is studied, in which the output stage is unique and formed by a high-frequency AC-AC converter employing four quadrant switches. The topology, its operation and the modulation strategy are presented. The high-frequency stage switches located on the primary side of the transformer operate with soft switching of the ZVS type, while the four quadrant switches that form the output stage operate with soft switching of the ZCS type. Experimental data on a 1.5 kW experimental prototype that was designed, built and tested in the laboratory, with 220 VRMS input, 220 VRMS output and 40 kHz switching frequency are given in the paper. The studied converter can be considered a candidate for the building block of medium voltage solid-state transformers (SST) for power distribution systems.<br>

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Determination of Parameters of High-Frequency Matching Transformer of Installation of Induction Heating

Antipin

Frizen

Bychkov

2019

2019 16th Conference on Electrical Machines, Drives and Power Systems (ELMA)

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A Bidirectional AC/AC Series Resonant Converter with High Frequency Link

Cited by 4 publications

References 20 publications

Isolated AC/AC Converter With LLC Resonant Converter High-Frequency Link and Four-Quadrant Switches in the Output Stage

Isolated AC/AC Converter With LLC Resonant Converter High-Frequency Link and Four-Quadrant Switches in the Output Stage

Isolated AC/AC Converter with LLC Resonant Converter High Frequency Link and Four-Quadrant Switches in the Output Stage

Determination of Parameters of High-Frequency Matching Transformer of Installation of Induction Heating

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