Solar power generation device and control method of solar power generation device
First Claim
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1. A solar power generation device comprising:
- a first DC-DC converter configured to receive an output of a semiconductor device that converts optical energy into electric energy;
a storage battery configured to receive an output of the first DC-DC converter;
a second DC-DC converter configured to convert a voltage of the storage battery; and
a processor configured to;
when a value indicating a state of charge of the storage battery is equal to or greater than a predetermined value;
change a duty ratio of the first DC-DC converter so as not to charge the storage battery without interrupting the output of the semiconductor device to the first DC-DC converter, andchange a duty ratio of the second DC-DC converter so as to set an operating point of the semiconductor device to a maximum power point of the semiconductor device.
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Abstract
A solar power generation device is provided which includes a first DC-DC converter to which an output of a solar battery is input, a storage battery to which an output of the first DC-DC converter is input, a second DC-DC converter that converts a voltage of the storage battery, and a control unit. The control unit changes a duty ratio of the first DC-DC converter so as not to charge the storage battery and changes a duty ratio of the second DC-DC converter so as to set an operating point of the solar battery to a maximum power point, when a value indicating a state of charge of the storage battery is equal to or greater than a predetermined value.
26 Citations
8 Claims
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1. A solar power generation device comprising:
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a first DC-DC converter configured to receive an output of a semiconductor device that converts optical energy into electric energy; a storage battery configured to receive an output of the first DC-DC converter; a second DC-DC converter configured to convert a voltage of the storage battery; and a processor configured to; when a value indicating a state of charge of the storage battery is equal to or greater than a predetermined value; change a duty ratio of the first DC-DC converter so as not to charge the storage battery without interrupting the output of the semiconductor device to the first DC-DC converter, and change a duty ratio of the second DC-DC converter so as to set an operating point of the semiconductor device to a maximum power point of the semiconductor device. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A control method of a solar power generation device of performing control of shifting an operating point of a semiconductor device that converts optical energy into electric energy to a maximum power point, comprising:
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monitoring a state of charge of a storage battery that stores power generated by the semiconductor device; when a value indicating the state of charge of the storage battery is equal to or greater than a predetermined value; changing a duty ratio of a first DC-DC converter configured to receive an output of the semiconductor device, so as not to charge the storage battery without interrupting the output of the semiconductor device to the first DC-DC converter, and changing a duty ratio of a second DC-DC converter configured to convert a voltage of the storage battery so as to set the operating point of the semiconductor device to the maximum power point; and when the value indicating the state of charge of the storage battery is less than the predetermined value; changing the duty ratio of the first DC-DC converter so as to set the operating point of the semiconductor device to the maximum power point. - View Dependent Claims (8)
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Specification