# US 9,882,388 B2 · Photovoltaic device

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- Number: US 9,882,388 B2
- Document ID: US9882388B2
- Status: Granted
- Kind: B2
- Application number: 14/930,517
- Filed: 2015-11-02
- Published: 2016-07-21
- Granted: 2018-01-30
- Earliest claimed: 2015-01-19
- Assignees: Lsis Co., Ltd.
- Applicants: Lsis Co., Ltd.
- Inventors: Choong Kun Cho
- Web page: https://patentgrep.com/patent/US9882388B2

## CPC

- H02S 50/00: Monitoring or testing of PV systems, e.g. load balancing or fault identification
- H02J 3/381: {Dispersed generators}
- H02J 13/12: Monitoring network conditions, e.g. electrical magnitudes or operational status
- H02J 13/333: the equipment forming part of substations
- H02J 2101/24: Photovoltaics
- Y02E 10/56: Power conversion systems, e.g. maximum power point trackers
- Y02E 40/70: Smart grids as climate change mitigation technology in the energy generation sector
- Y02E 60/00: Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y04S 10/123: the energy generation units being or involving renewable energy sources
- Y04S 10/30: State monitoring, e.g. fault, temperature monitoring, insulator monitoring, corona discharge
- H02S: GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES (obtaining electrical energy from radioactive sources G21H1/12; light sensitive inorganic semiconductor devices H10F; light sensitive organic semiconductor devices H10K30/00; thermoelectric devices H10N10/00; pyroelectric devices H10N15/00)
- H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y04S: SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS

## Abstract

A photovoltaic device is provided. The photovoltaic device includes a photovoltaic cell array absorbing solar voltaic energy to convert the solar voltaic energy to electrical energy, and a sensing unit sensing at least any one of power generation information for representing a state of the photovoltaic device and environmental information for representing environmental information around the photovoltaic device, and measuring a time when the at least one of the power generation information and the environmental information is sensed.

## Claims

### Claim 1

A photovoltaic device comprising:
a photovoltaic cell array configured to absorb solar voltaic energy to convert the solar voltaic energy to electrical energy; and
a sensing unit configured to sense at least any one of power generation information including a voltage of power generated by the photovoltaic device and a temperature in the photovoltaic device and environmental information including a solar insolation and temperature of a place where the photovoltaic device is located, and
measure a time when at least any one of the voltage of power generated by the photovoltaic device, the temperature in the photovoltaic device, the solar insolation and the temperature of the place where the photovoltaic device is located is sensed,
wherein the sensing unit comprises a plurality of sensors, the plurality of sensors sense the at least any one of the power generation information and the environmental information at an identical time,
wherein the sensing unit is further configured to transmit, sequentially, the at least any one of the power generation information and the environmental information when being unable to simultaneously transmit, to a data logger, the at least any one of the power generation information and the environmental information.

### Claim 2 (depends on 1)

The photovoltaic device according to claim 1, wherein the sensing unit transmits state information comprising the at least any one of the power generation information and the environmental information, and the time when at least any one of the voltage of power generated by the photovoltaic device, the temperature in the photovoltaic device, the solar insolation and the temperature of the place where the photovoltaic device is located is sensed.

### Claim 3 (depends on 2)

The photovoltaic device according to claim 2, wherein the state information comprises at least any one of identification information for identifying a sensor comprised in the sensing unit, measurement information for representing a value sensed by the sensor, time information for representing a time when the sensor senses, and error detecting information for detecting an information error.

### Claim 4 (depends on 3)

The photovoltaic device according to claim 3, wherein the identification information comprises at least any one of sensor address information for representing a connection position of the sensor, and sensor type information for representing a type of the sensor.

### Claim 5

An operation method of a photovoltaic device, the operation method comprising:
absorbing solar voltaic energy to convert the solar voltaic energy to electrical energy;
sensing, by a sensing unit, at least any one of power generation information including a voltage of power generated by the photovoltaic device and a temperature in the photovoltaic device and environmental information including a solar insolation and temperature of a place where the photovoltaic device is located; and
measuring a time when at least any one of the voltage of power generated by the photovoltaic device, the temperature in the photovoltaic device, the solar insolation and the temperature of the place where the photovoltaic device is located,
sensing, by a sensing unit comprising a plurality of sensors, the at least any one of the power generation information and the environmental information at an identical time, and
transmitting, sequentially, the at least any one of power generation information and the environmental information, when being unable to simultaneously transmit, to a data logger, the at least any one of power generation information and the environmental information.

### Claim 6 (depends on 5)

The operation method according to claim 5, further comprising:
transmitting state information comprising the at least any one of the power generation information and the environmental information, and the time when at least any one of the voltage of power generated by the photovoltaic device, the temperature in the photovoltaic device, the solar insolation and the temperature of the place where the photovoltaic device is located is sensed.

### Claim 7 (depends on 6)

The operation method according to claim 6, wherein the state information comprises at least any one of identification information for identifying a sensor comprised in the sensing unit, measurement information for representing a value sensed by the sensor, time information for representing a time when the sensor senses, and error detecting information for detecting an error in information.

### Claim 8 (depends on 7)

The operation method according to claim 7, wherein the identification information comprises at least any one of sensor address information for representing a connection position of the sensor, and sensor type information for representing a type of the sensor.