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Grid-Connected Photovoltaic System With Power Factor Correction

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3 Author(s)
Yu-Kang Lo ; Dept. of Electron. Eng., Nat. Taiwan Univ. of Sci. & Technol., Taipei ; Ting-Peng Lee ; Kuan-Hung Wu

A combined grid-connection/power-factor-correction technique for a photovoltaic (PV) system is proposed in this letter. A maximum power point tracking dc/dc converter served as a charger for the battery bank. A bidirectional inverter is applied as a generator/discharger during daytime, supplying power to the load. The inverter can also be used as a charger to maintain the minimum required voltage level of the batteries when the PV power is insufficient. Experiments on a 1-kW PV system show satisfactory results of the power management and the unity power factor at the utility side.

Published in:

IEEE Transactions on Industrial Electronics  (Volume:55 ,  Issue: 5 )