A High-Efficiency Solar Array Simulator Implemented by an LLC Resonant DC-DC Converter

In this paper, a high-efficiency solar array simulator (SAS) implemented by an LLC resonant dc-dc converter is proposed to save the cost and energy of photovoltaic (PV) system testing. The proposed converter has zero-voltage switching (ZVS) operation of the primary switches and zero-current switczer...

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Bibliographic Details
Published in:IEEE transactions on power electronics 2013-06, Vol.28 (6), p.3039-3046
Main Authors: Chang, Chien-Hsuan, Chang, En-Chih, Cheng, Hung-Liang
Format: Article
Language:English
Subjects:
Diodes
Efficiency
Electric currents
Equivalent circuits
Inductors
LLC resonant dc-dc converter
photovoltaic (PV) system
Photovoltaic cells
Rectifiers
Resonant frequency
Simulators
solar array simulator (SAS)
Synthetic aperture sonar
Zero current switching
Zero voltage switching
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Summary:In this paper, a high-efficiency solar array simulator (SAS) implemented by an LLC resonant dc-dc converter is proposed to save the cost and energy of photovoltaic (PV) system testing. The proposed converter has zero-voltage switching (ZVS) operation of the primary switches and zero-current switczero-current switching (ZCS) operation of the rectifier diodes. By frequency modulation control, the outputhing (ZCS) operation of the rectifier diodes. By frequency modulation control, the output impedance of an LLC resonant converter can be regulated from zero to infinite without shunt or serial resistors. Therefore, the efficiency of the proposed SAS can be significantly increased. The circuit operations are analyzed in detail to derive the theoretical equations. Circuit parameters are designed based on the practical considerations. Finally, an illustrative example is implemented to demonstrate the feasibility of the proposed SAS.
ISSN:0885-8993
1941-0107
DOI:10.1109/TPEL.2012.2205273