A photovoltaic grid-connected inverter device

The utility model relates to a photovoltaic grid-connected inverter device. Photovoltaic power generation systems in china are mainly DC systems. Because of different load DC voltage, it is difficult to achieve the standardization and the compatibility of the systems. A photovoltaic power supply usi...

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Bibliographic Details
Main Authors WANG DUTING, LI YIDAN, KANG HONGMING, WEI SANMIN
Format Patent
LanguageChinese
English
Published 14.08.2013
Subjects
CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRICITY
GENERATION
SYSTEMS FOR STORING ELECTRIC ENERGY
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Summary:The utility model relates to a photovoltaic grid-connected inverter device. Photovoltaic power generation systems in china are mainly DC systems. Because of different load DC voltage, it is difficult to achieve the standardization and the compatibility of the systems. A photovoltaic power supply using DC power is difficult to enter a market as a commodity. The photovoltaic grid-connected inverter device comprises a master circuit unit and a control unit. The master circuit unit comprises a DC-DC converter (1) and a DC-AC inverter (2). The control unit comprises a DSP chip (3) and a CPLD chip (4) and achieves control by using phase-locked loop SPLL technology. The DC-DC converter (1) is connected with the DC-AC inverter (2) through a supporting capacitor DClink (5). The DSP chip is connected with an auxiliary power supply (6) which is connected with a solar battery array (7). The solar battery array is connected with the DC-DC converter. The photovoltaic grid-connected inverter device is used in photovoltaic p
Bibliography:Application Number: CN201320174549U