PHOTOELECTRIC CELL DEVICE AND MALFUNCTION DETERMINING METHOD
First Claim
1. A photoelectric cell device comprising:
- a power source unit arranged between a ground line and a power source line for generating an photo-electromotive force from incident light and applying, to the power source line, state information which indicates a state; and
an inverter for converting a direct-current power source applied from the power source line into a predetermined power source and communicating with the power source unit via the power source line,wherein the power source unit includes one or more power source modules, each of which includesa photoelectric cell module includingcells arranged in series and/or in parallel for generating the photo-electromotive force from the incident light,a first terminal on a side of the ground line, anda second terminal on a side of the power source line,a bypass diode having an anode and a cathode, the anode being connected to the first terminal of the photoelectric cell module, the cathode being connected to the second terminal of the photoelectric cell module,a state detector for detecting a state of the each of the power source modules and outputting the detected state as a detection result,a communication unit for receiving an information request from the inverter and applying the state information based on the detection result to the power source line, anda communication controller for controlling the communication unit to apply the state information selectively, based on the information request received by the communication unit.
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Accused Products
Abstract
Provided is a photoelectric-cell device including a power-source unit arranged between a ground line and a power-source line for generating photo-electromotive force and applying state information to the power-source line, and also including an inverter for converting a direct-current power source into a predetermined one and communicating with the unit via the power-source line. A power-source module of the unit includes a photoelectric-cell module, a bypass diode, a state detector, a communication unit, and a communication controller. The photoelectric-cell module includes cells for generating photo-electromotive force, first/second terminals on the ground-line/power-source-line sides, respectively. The anode of the diode is connected to the first terminal, and the cathode to the second terminal. The detector detects a state of each power-source module. The communication unit applies the information to the power-source line. The controller controls the communication unit to apply the information selectively, based on an information request from the inverter.
21 Citations
8 Claims
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1. A photoelectric cell device comprising:
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a power source unit arranged between a ground line and a power source line for generating an photo-electromotive force from incident light and applying, to the power source line, state information which indicates a state; and an inverter for converting a direct-current power source applied from the power source line into a predetermined power source and communicating with the power source unit via the power source line, wherein the power source unit includes one or more power source modules, each of which includes a photoelectric cell module including cells arranged in series and/or in parallel for generating the photo-electromotive force from the incident light, a first terminal on a side of the ground line, and a second terminal on a side of the power source line, a bypass diode having an anode and a cathode, the anode being connected to the first terminal of the photoelectric cell module, the cathode being connected to the second terminal of the photoelectric cell module, a state detector for detecting a state of the each of the power source modules and outputting the detected state as a detection result, a communication unit for receiving an information request from the inverter and applying the state information based on the detection result to the power source line, and a communication controller for controlling the communication unit to apply the state information selectively, based on the information request received by the communication unit. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A malfunction determining method comprising the steps of:
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transmitting an information request to a power source unit in order to acquire state information which indicates a state, the power source unit being arranged between a ground line and a power source line for generating an photo-electromotive force from incident light, the power source unit including one or more power source modules, each of which selectively applies the state information to the power source line on a basis of the information request; and determining a state of the each of the one or more power source module, based on the state information selectively applied to the power source line.
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Specification