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US 7,612,283 B2Granted
Solar power generation apparatus and its manufacturing method
AssigneeCanon Kabushiki Kaisha
InventorsFumitaka Toyomura, Nobuyoshi Takehara
Life of this patent
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Abstract
A solar cell assembly including a plurality of solar cells is formed on a common substrate, and a DC/DC converter which converts the output from the solar cell is connected to each solar cell to constitute a solar power generation apparatus. The output from the solar power generation apparatus is converted into an AC power by an inverter and supplied to a load or commercial AC power system. Since the arrangement is simplified, the manufacturing cost can be reduced, and the influence of partial shade or a variation in characteristic decreases.
Claims2
A solar power generation system comprising:
- a plurality of solar cells formed on a common conductive substrate;
- a plurality of DC/DC converters which are connected to said solar cells, respectively, to boost voltage of DC power output from the connected solar cells;
- and
- an inverter which converts DC power output from said plurality of DC/DC converters into AC power,
- wherein each of said plurality of DC/DC converters comprises first and second input terminals and first and second output terminals,
- wherein each of said solar cells comprises a first electrode electrically connected to the common conductive substrate, and a second electrode electrically connected to the first input terminal of one of said plurality of DC/DC converters,
- wherein the second input terminal and the first output terminal of each of said plurality of DC/DC converters are electrically connected to the common conductive substrate for connecting said plurality of DC/DC converters in parallel electrical relation, and
- wherein the second output terminal of one of said plurality of DC/DC converters is connected to the second output terminal of another one of said plurality of DC/DC converters,
- wherein said inverter has an insulating transformer to insulate between an input and an output of said inverter, and
- wherein a connection member which electrically connects said plurality of DC/DC converters to said inverter is grounded.
7 more elements
Dependencies are inferred from the claim text.