KR101703727B1 - Power output compensation system for maximum efficiency of photovoltaic power generation - Google Patents

Power output compensation system for maximum efficiency of photovoltaic power generation Download PDF

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KR101703727B1
KR101703727B1 KR1020150104600A KR20150104600A KR101703727B1 KR 101703727 B1 KR101703727 B1 KR 101703727B1 KR 1020150104600 A KR1020150104600 A KR 1020150104600A KR 20150104600 A KR20150104600 A KR 20150104600A KR 101703727 B1 KR101703727 B1 KR 101703727B1
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South Korea
Prior art keywords
output
solar cell
data
solar
cell module
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KR1020150104600A
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Korean (ko)
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KR20170012774A (en
Inventor
강건민
주성찬
송법성
양주석
Original Assignee
주식회사 태찬테크
(주) 신성테크
주식회사 더블유피
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Priority to KR1020150104600A priority Critical patent/KR101703727B1/en
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    • H02J3/385—
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/66—Regulating electric power
    • G05F1/67—Regulating electric power to the maximum power available from a generator, e.g. from solar cell
    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
    • G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C19/00—Electric signal transmission systems
    • G08C19/02—Electric signal transmission systems in which the signal transmitted is magnitude of current or voltage
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy

Abstract

The present invention relates to an output compensation system for maximizing the efficiency of solar power generation, in which one solar cell module (10) is connected to two adjacent solar cell modules (10) And a plurality of solar power output compensators (100) for performing synchronous compensation in accordance with a solar cell module having a high output value by combining a buck-boost switching conversion and an impedance matching with respect to an output value of the solar cell module having an output value, Each solar light output compensator 100 is provided with wireless data communication between neighboring solar light output compensators 100 using a short-range wireless communication network, and wireless data communication with a central data processing unit 300 using a long- And more particularly, to an output compensation system for maximizing the efficiency of photovoltaic power generation capable of communicating.

Description

[0001] POWER OUTPUT COMPENSATION SYSTEM FOR MAXIMUM EFFICIENCY OF PHOTOVOLTAIC POWER GENERATION [0002]

The present invention relates to a system for compensating the output of solar power generation, and more particularly, to a system for compensating an output of a solar cell module, And more particularly, to an output compensation system for maximizing the efficiency of a photovoltaic power generation system that can realize maximum efficiency in terms of operation and management of the photovoltaic system.

Generally, photovoltaic power generation (solar photovoltaic power generation) is to convert sunlight into direct current to produce electric power, and many solar cells use an array solar cell module (solar panel) It is a power generation system that produces.

The photovoltaic power generation system includes a plurality of solar cell modules having solar cells arrayed to generate direct current by receiving sunlight, a connection unit for collecting the direct current generated by the solar cell modules by unit strings, And an inverter for converting the total DC electricity collected in the half into AC electricity.

At this time, the solar cell module is connected in parallel with the series, and generates and outputs DC electricity using solar light.

However, each of the solar cell modules connected in series and in parallel in this manner is affected by the solar cell module having the lowest output in terms of the structural characteristics due to the serial-parallel connection, thereby leading to the overall efficiency of the solar cell power generation system It has limitations.

As a result, there is a problem that the maximum efficiency can not be obtained from the solar cell module of the solar power generation system, and the efficiency of the operation and management of the solar power generation system is inferior.

Korean Patent No. 10-1221667

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the related art, and conceived to solve the above-mentioned problems, and it is an object of the present invention to provide a solar cell module, And to provide an output compensation system for maximizing the efficiency of the photovoltaic power generation that can be realized.

The present invention relates to a solar battery module that can maximize the efficiency of photovoltaic generation by making it possible to output an output synchronized with a comparison output by compensating an output value of a low output in a solar cell module using a buck-boost switching technique and impedance matching An object of the present invention is to provide an output compensation system for maximum efficiency of photovoltaic generation.

The present invention can perform individual monitoring of each solar cell module through an output compensator and can provide and manage information important for the operation and management of the solar power generation system, It is possible to check whether the operation status of each solar cell module is normal and the lifetime of each solar cell module can be predicted by confirming the operating state value, and the energy flow of the entire photovoltaic power generation system can be confirmed. And to provide an output compensation system for maximum efficiency of a photovoltaic power generation system.

According to an aspect of the present invention, there is provided a solar power generation system including a plurality of solar cell modules (10) having solar cells arrayed, One of the two adjacent solar cell modules 10 is connected to each other, and the output value of each solar cell module 10 is checked, and the buck-boost switching conversion and the impedance matching are combined with the output value of the solar cell module having a low output value And a plurality of solar light output compensators (100) for performing synchronous compensation on the side of the solar cell module having a high output value, wherein each solar light output compensator (100) The output compensator 100 may be configured to be capable of wireless data communication with the central data processing unit and wireless data communication with the central data processing unit using the remote wireless communication network And a unique identification code is recorded so as to be individually identifiable; A plurality of wireless relay units (hereinafter referred to as " wireless relay units ") for wirelessly receiving each of the solar cell module output data and compensation processing data to be held by the respective solar light output compensators 100, 200); The data output from each solar cell module 10 and the compensation processing data from each solar light output compensator 100 are wirelessly received through the data wireless relay of the respective wireless relay units 200, And a central data processing unit 300 for transmitting the data to the mobile communication terminal.

Here, each solar light output compensator 100 includes a PWM controller 110 for controlling pulse width modulation (PWM) of each output generated from the adjacent two solar cell modules 10; A buck-boost DC-DC converter part 120 for controlling a current mode through a buck-boost switching switching on an output signal of each of the solar cell modules 10 controlled by the pulse width modulation; Current I and impedance Z from the output signal of each solar cell module 10 through the buck-boost DC-DC converter unit 120 to determine two adjacent solar cell modules 10) is a synchronized output, outputs a control signal for determining whether or not an impedance matching process is performed according to the comparison, and includes a microcomputer (130) having a unique identification code recorded therein; If the outputs of the two neighboring solar cell modules 10 are not synchronized with each other, impedance matching is performed according to the control signal of the microcomputer 130 to compensate for the low output signal side load And an impedance matching unit (140) for synchronizing with a high output.

Here, each of the wireless relay units (200) includes a wireless receiving unit (210) for receiving each solar cell module output data and compensation process data transmitted by each solar light output compensator (100); A data processing unit 220 for decrypting each solar cell module output data and compensation process data received from each of the solar cell output compensators 100; A protocol generation unit 230 for converting each solar cell module output data and compensation process data processed by the data processing unit 220 into a transferable message type protocol; And a wireless transmission unit 240 for wirelessly transmitting output data and compensation processing data of each solar cell module through the protocol generation unit 230 to the central data processing unit 300. [

According to the present invention, since the output value is compensated for the low output of the solar cell module, it is useful to realize the maximum efficiency in the operation and management of the solar power generation system.

The present invention can perform individual monitoring of each solar cell module through the application of the solar light output compensator, thereby providing and managing information that is important for the operation and management of the solar power generation system. In particular, It is possible to check the current operating state of each solar cell module and to predict the normal operation of each solar cell module and the lifetime of each solar cell module and to confirm the energy flow of the entire solar cell power system Therefore, the operation and management of the photovoltaic power generation system can be implemented more smoothly, and moreover, it provides the usefulness for maximizing the efficiency of the photovoltaic power generation.

The present invention provides a useful utility for maximizing the efficiency of solar power generation by compensating the output value of a low output in a solar cell module by using a buck-boost switching technique and impedance matching, and outputting the output as an output synchronized with a comparison output .

1 is a schematic system configuration diagram illustrating an output compensation system for maximum efficiency of solar power generation according to an embodiment of the present invention.
BACKGROUND OF THE INVENTION Field of the Invention [0001] The present invention relates to an output compensation system for maximizing the efficiency of a solar power generation system.
3 is a block diagram illustrating an output compensation system for maximum efficiency of solar power generation according to an embodiment of the present invention.
4 is a block diagram illustrating a solar light output compensator in an output compensation system for maximum efficiency of solar power generation according to an embodiment of the present invention.
FIG. 5 is a schematic flow chart for explaining an operation state of an output compensation system for maximum efficiency of solar power generation according to an embodiment of the present invention; FIG.
6 is a schematic view showing an example of application of an output compensation system for maximum efficiency of solar power generation according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. The present invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.

1 to 4, an output compensation system for maximum efficiency of photovoltaic power generation according to an embodiment of the present invention includes a plurality of photovoltaic modules 10 including a plurality of photovoltaic modules 10, System, two solar cell modules 10 adjacent to each other are connected in one connection, and an output value of each solar cell module 10 is checked to perform a buck-boost switching operation on a solar cell module side output value having a low output value And a plurality of solar light output compensators 100 for performing synchronous compensation in accordance with the solar cell module having a high output value by combining impedance matching with impedance matching.

The solar light output compensator 100 may be configured to wirelessly communicate with nearby solar power compensators 100 using a short-range wireless communication network, and may wirelessly communicate with a central data processing unit 300 using a long- So that data communication is possible.

At this time, each solar light output compensator 100 has a configuration for wirelessly transmitting acquired data using wireless communication, and a unique identification code is recorded so as to identify each device and data.

Each of the solar cell output compensators 100 is connected to two neighboring solar cell modules 10 so as to perform compensation according to the comparison output.

Here, each of the solar light output compensators 100 includes a PWM control unit 110 for controlling the pulse width modulation (PWM) of each solar light output generated from two adjacent solar cell modules 10, A buck-boost DC-DC converter part 120 for controlling a current mode through a buck-boost switching conversion on an output signal of each of the solar cell modules 10 controlled by the pulse width modulation; The voltage V, the current I and the impedance Z from the output signal of each solar cell module 10 through the unit 120 to check whether the two neighboring solar cell modules 10 are synchronized output A microcomputer 130 in which a unique identification code is recorded and a control signal for determining whether or not an impedance matching process is performed according to the determination; If the output is not synchronized with each other An impedance matching unit 140 for performing impedance matching according to a control signal of the microcomputer 130 to compensate for a load on the side of a low output signal so as to synchronize with a high output, A protocol generation unit 150 for protocolizing data and compensation processing data and a wireless communication unit 150 for wirelessly transmitting output data and compensation processing data of each of the solar cell modules 10 protocol- And a transmitting unit 160. [0033] FIG.

Here, the buck-boost DC-DC converter unit 120 is configured to operate two switches in the chip. In the buck mode, the switch connected to the power source operates in the forward direction. In the buck mode, So that current can be supplied to the load.

The output data and the compensation data of each solar cell module 10 to be held by the respective solar light output compensators 100 are wirelessly received and then wirelessly transmitted to the central data processing unit 300 for transmission And a radio relay unit 200 in charge.

The wireless relaying unit 200 also performs a role of supporting mutual wireless data communication between the solar light output compensators 100.

Each of the wireless relay units 200 includes a wireless receiving unit 210 for receiving output data and compensation process data of each solar cell module 10 wirelessly transmitted from each of the solar cell output compensators 100, A data processing unit 220 for decrypting output data and compensation processing data of each solar cell module 10 received from each solar light output compensator 100, A protocol generation unit 230 for converting the module output data and the compensation process data into a protocol of a message type that can be transmitted and a control unit 230 for generating output data of each solar cell module 10 via the protocol generation unit 230, And a wireless transmission unit 240 for wireless transmission to the central data processing unit 300. [

Here, the radio relay unit 200 transmits data between the radio relay units located between a central data processing unit 300 and a radio relay unit located at a remote location, And transmits data to the solar light output compensator 100, which supports data transmission between the solar light output compensators 100.

In addition, the output data from each solar cell module 10 acquired through each solar light output compensator 100 and the compensation process data performed from each solar light power compensator 100 can be transmitted to perform individual monitoring And a central data processing unit 300 for collecting data.

The central data processing unit 300 receives the output data from each solar cell module 10 and the compensation processing data from each solar light output compensator 100 through wireless radio relay of each wireless relay unit 200, And to transfer the acquired data to the administrator server 400. [

The manager server 400 is a server for monitoring a photovoltaic power generation system. The manager server 400 can support a photovoltaic generation system at any time and anywhere through a connection with a web service and an app service.

At this time, the Internet protocol used between the central data processing unit 300 and the administrator server 400 may be called TCP / IP.

The local area network used for wireless transmission of various data related to the solar module 10 that can be secured through the solar light output compensator 100 may be Zigbee or Ultra Wide Wideband (UWB) Band, which can be configured to employ ZigBee for low-speed data and ultra-wideband wireless (UWB) for high-speed data.

The remote communication network used for wirelessly transmitting various data related to the solar module 10 to the central data processing unit 300 that can be secured through the solar light output compensator 100 may be Wi-Fi or Wi- You can use Bluetooth.

Further, as shown in FIG. 5, through the respective solar light output compensators 100, buck-boost switching and impedance matching are combined to compensate for a low output value of each solar cell module 10 to be compared with each other Thereby increasing the overall output value.

That is, when the solar light output from each solar cell module 10 starts to be input, each solar light output compensator 100 generates a pulse (pulse) for each solar light output generated from two neighboring solar cell modules 10, Width modulation (PWM) control is performed first.

Next, the current mode is controlled through the buck-boost switching switching on the output signal of each of the solar cell modules 10 controlled by the pulse width modulation.

Next, the voltage V, the current I and the impedance Z are checked from the output signal of each solar cell module 10 to determine whether two neighboring solar cell modules 10 are synchronized outputs .

At this time, when the outputs generated from two neighboring solar battery modules 10 are not synchronized output, the low output signal side load is compensated by impedance matching to perform synchronization processing in accordance with the high output of the compared object do.

Thus, by compensating the low output signal to be compared and synchronizing with the high output, the overall output value of the solar power generation system can be increased and the maximum efficiency can be obtained.

The compensation processing operation and the output data generated in each solar cell module 10 are transmitted to the central data processing unit 300 through wireless transmission and finally transmitted to the manager server 400 to monitor the solar power generation system have.

In particular, it is possible to individually monitor each solar cell module 10 through data transmitted from each solar cell output compensator 100, to provide important data for overall operation and management of the PV system, It is possible to provide the advantage of making it manageable.

In addition, the operation state value of each solar cell module 10 can be confirmed through the application of the solar light output compensator 100, so that the operation state value of the solar cell module 10 can be predicted as well as its normal operation, It is possible to determine the energy flow of the whole solar power generation system.

On the other hand, as shown in Fig. 6, an output comparison experiment was conducted for a solar power generation system in which the solar power output compensator 100 was applied to a plurality of solar cell modules 10, The solar cell modules # 1 and # 2 located on the right side do not apply the above-described solar cell output compensator 100 and the solar cell modules # 15 and # 16 located on the right side are in a state in which the solar light output compensator 100 described above is applied to be.

At this time, the outputs of the solar cell modules # 1 and # 2 are affected by the low output side, and the outputs of the solar cell modules # 15 and # 16 are decreased to 10A. And the output was increased to 20A.

Accordingly, when the input voltage value is equal to 10V (dc), the output power of the solar cell modules # 1 and # 2 is 100W while the output power of the solar cell modules # 15 and # 16 is 200W, And the efficiency of the photovoltaic power generation system can be increased.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined by the appended claims. Substitution can be made, which will be within the technical scope of the present invention.

10: solar cell module 100: solar light output compensator
110: PWM control unit 120: Buck-boost DC-DC converter unit
130: Micom 140: Impedance matching unit
150: protocol generation unit 160: wireless transmission unit
200: radio relay unit 210: radio receiver
220: data processor 230: protocol generator
240: radio transmission unit 300: central data processing unit
400: administrator server

Claims (3)

1. A solar power generation system including a plurality of solar cell modules (10) provided with solar cells arrayed therein,
One of the two solar cell modules 10 adjacent to each other is connected, and the output value of each solar cell module 10 is checked to perform the buck-boost switching and the impedance matching on the solar cell module side output value having a low output value And a plurality of solar power output compensators (100) for performing synchronous compensation to the solar cell module side having a high output value by grafting,
Each of the solar light output compensators 100 is provided with wireless data communication between adjacent solar light output compensators 100 using a short-range wireless communication network, and is also provided with a central data processing unit 300 A configuration in which wireless data communication is possible, and a unique identification code is recorded so as to be identifiable;
A plurality of wireless communication modules for wirelessly receiving each of the solar cell module output data and the compensation process data to be held by the respective solar light output compensators 100 and transmitting the wireless communication data to the central data processing module 300, A relay unit (200);
Wirelessly receives output data from each solar cell module 10 and compensation processing data from each solar light output compensator 100 through data wireless relay of the respective wireless relay units 200 and transmits it to the administrator server 400 A central data processing unit 300 for transmitting the data to the base station; / RTI >
Each solar light output compensator (100)
A PWM control unit 110 for controlling the pulse width modulation (PWM) of each output generated from the adjacent two solar cell modules 10;
A buck-boost DC-DC converter part 120 for controlling a current mode through a buck-boost switching switching on an output signal of each of the solar cell modules 10 controlled by the pulse width modulation;
Current I and impedance Z from the output signal of each solar cell module 10 through the buck-boost DC-DC converter unit 120 to determine two adjacent solar cell modules 10) is a synchronized output, outputs a control signal for determining whether or not an impedance matching process is to be performed according to the comparison, and includes a microcomputer (130) having a unique identification code recorded therein;
If the outputs of the two neighboring solar cell modules 10 are not synchronized with each other, impedance matching is performed according to the control signal of the microcomputer 130 to compensate for the low output signal side load An impedance matching unit 140 for synchronizing with high output;
A protocol generation unit (150) for protocolizing output data and compensation processing data of each solar cell module (10);
A wireless transmission unit 160 for wirelessly transmitting output data and compensation process data of each protocol module 10 through the protocol generation unit 150; And an output compensation system for maximizing the efficiency of the photovoltaic power generation system.
delete The method according to claim 1,
Each of the radio relay units (200)
A wireless receiving unit 210 for receiving each solar cell module output data and compensation process data transmitted by the respective solar cell output compensators 100;
A data processing unit 220 for decrypting each solar cell module output data and compensation process data received from each of the solar cell output compensators 100;
A protocol generation unit 230 for converting each solar cell module output data and compensation processing data processed by the data processing unit 220 into a transferable message type protocol;
A wireless transmission unit 240 for wirelessly transmitting output data and compensation process data of each solar cell module through the protocol generation unit 230 to the central data processing unit 300; And an output compensation system for maximizing the efficiency of the photovoltaic power generation system.
KR1020150104600A 2015-07-23 2015-07-23 Power output compensation system for maximum efficiency of photovoltaic power generation KR101703727B1 (en)

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KR102266796B1 (en) * 2019-08-30 2021-06-18 성창 주식회사 Gateway apparatus for controlling power of photovoltaic generating facilities
KR20220063516A (en) * 2020-11-10 2022-05-17 주식회사 더블유피 Power Compensation Device integrated Junction Box for Photovoltaic Module
CN112925377B (en) * 2021-02-01 2022-07-29 浙江晶科能源有限公司 Photovoltaic system and maximum power tracking method thereof

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Publication number Priority date Publication date Assignee Title
KR101026353B1 (en) * 2010-10-08 2011-04-05 한빛디엔에스 주식회사 Monitor and control system of solar cell module using dc power line communication
JP2014067259A (en) * 2012-09-26 2014-04-17 Panasonic Corp Power conditioner

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KR101221667B1 (en) 2012-08-30 2013-01-14 (주)썬전력 Switching power supply for current compensation of solar power generator

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101026353B1 (en) * 2010-10-08 2011-04-05 한빛디엔에스 주식회사 Monitor and control system of solar cell module using dc power line communication
JP2014067259A (en) * 2012-09-26 2014-04-17 Panasonic Corp Power conditioner

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