Soft-Switching Converter With HF Transformer for Grid-Connected Photovoltaic Systems

Cacciato, M.; Consoli, A.; Attanasio, R.; Gennaro, F.

doi:10.1109/tie.2009.2032201

Cited by 106 publications

(23 citation statements)

References 18 publications

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“…8, the power circuit includes the dc-dc converter, dc-ac inverter, switch-mode power supply for the gate drivers, and auxiliary circuits. The main power circuit consists of the dc-dc converter and the dc-ac inverter for the grid-connected PV MIC system [7]. The size of the entire board is 180 × 135 × 43 (mm).…”

Section: Resultsmentioning

confidence: 99%

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High-Efficiency DC–DC Converter With Fast Dynamic Response for Low-Voltage Photovoltaic Sources

Choi

2013

IEEE Trans. Power Electron.

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This paper proposes a high-efficiency dc-dc converter with fast dynamic response for low-voltage photovoltaic (PV) sources. The voltage stress of power switches is reduced at lowvoltage side. Zero-current turn-off of output diodes is achieved at high-voltage side. Power efficiency is improved by reducing switching power losses. A modified proportional and integral controller is also suggested to achieve fast output voltage control. The dynamic response of the proposed converter is improved. The performance of the proposed converter is verified based on an experimental prototype for a 200-W PV module.Index Terms-DC-DC converter, dynamic response, photovoltaic (PV), power efficiency.

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Section: Resultsmentioning

confidence: 99%

“…Thus, a dc-dc converter with a high-voltage gain is needed. The active-bridge dc-dc converter has been used for low-voltage PV sources [7], [8]. The power switches at low-voltage side are turned ON at zero voltage.…”

Section: Introductionmentioning

confidence: 99%

High-Efficiency DC–DC Converter With Fast Dynamic Response for Low-Voltage Photovoltaic Sources

Choi

2013

IEEE Trans. Power Electron.

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“…Inverter Topologies A high-frequency transformer is the key device in classical grid-connected PV power processing systems [7]. It limits the ground current flowing into the grid and ensures that no direct current, which could saturate the distribution transformer, is injected into the grid.…”

Section: Transformerlessmentioning

confidence: 99%

Renewable Energy Operation and Conversion Schemes: A Summary of Discussions During the Seminar on Renewable Energy Systems

Spagnuolo

Petrone

Araújo³

et al. 2010

EEE Ind. Electron. Mag.

125

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“…The increased voltage stresses of the switching power devices cause high switching power losses, which results in low efficiency of the PCS [8]. Recently, a full-bridge converter has been utilized for the step-up DC-DC converter of grid-connected PV modules [9], [10]. It has low switching power losses due to the soft-switching operation of the switching power devices.…”

Section: Introductionmentioning

confidence: 99%

High-Efficiency Power Conditioning System for Grid-Connected Photovoltaic Modules

Choi¹,

Choi²

2011

Journal of Power Electronics

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This paper presents a high-efficiency power conditioning system (PCS) for grid-connected photovoltaic (PV) modules. The proposed PCS consists of a step-up DC-DC converter and a single-phase DC-AC inverter for the grid-connected PV modules. A soft-switching step-up DC-DC converter is proposed to generate a high DC-link voltage from the low PV module voltage with a high-efficiency. A DC-link voltage controller is presented for constant DC-link voltage regulation. A half-bridge inverter is used for the single-phase DC-AC inverter for grid connection. A grid current controller is suggested to supply PV electrical power to the power grid with a unity power factor. Experimental results are obtained from a 180 W grid-connected PV module system using the proposed PCS. The proposed PCS achieves a high power efficiency of 93.0 % with an unity power factor for a 60 Hz / 120 Vrms AC power grid.

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Soft-Switching Converter With HF Transformer for Grid-Connected Photovoltaic Systems

Cited by 106 publications

References 18 publications

High-Efficiency DC–DC Converter With Fast Dynamic Response for Low-Voltage Photovoltaic Sources

High-Efficiency DC–DC Converter With Fast Dynamic Response for Low-Voltage Photovoltaic Sources

Renewable Energy Operation and Conversion Schemes: A Summary of Discussions During the Seminar on Renewable Energy Systems

High-Efficiency Power Conditioning System for Grid-Connected Photovoltaic Modules

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