KR101283401B1 - Modular inverter system for solar development - Google Patents

Abstract

PURPOSE: A module type inverter system for photovoltaic power generation is provided to prevent outage of power by checking and monitoring a state of power generation. CONSTITUTION: A solar cell array connects a plurality of solar cell strings. A direct current (DC) power block unit provides output voltage to a plurality of inverters. A main control unit (300) transmits contact point release signal and contact point on signal. A contact point selection unit executes the contact point. A plurality of inverting devices (500) include inverting control unit and communication module. [Reference numerals] (200) DC power current blocking unit; (300) Main control unit; (400) Connection point selection unit; (500) Inverting device; (600) Spare inverting device; (700) Remote monitoring device; (800) AC power current blocking unit

Description

Modular Inverter system for Solar Power Generation

The present invention relates to a modular inverter system for photovoltaic power generation, and more specifically, to check the power generation state (current value, voltage value) of the solar cell array to provide the power generation state value to the main control unit configured inside the modular inverter. To monitor the current generation status and at the same time release the contact of the specific inverting means which has failed among the plurality of inverting means individually configured inside the modular inverter, and operate by contacting the spare inverting means to stop the whole operation of the power generation system. The modular inverter system for solar power generation can be prevented, and by providing a modular inverter, it is easy to further expand the solar cell array to prevent an increase in incidental costs due to the installation of the inverter and to enable efficient management. will be.

In general, a solar cell converts the energy of sunlight into electrical energy and generates electricity using two types of semiconductors, a P-type semiconductor and an N-type semiconductor.

When light is emitted to the solar cell, electrons and holes are generated inside, and the generated charges move to the P pole and the N pole, and a potential difference is generated between the P pole and the N pole by this phenomenon.

At this time, when a load is connected to the anode of the solar cell, a current flows.

These solar cells are connected in series and parallel as necessary to make a structure that can withstand the natural environment and a certain external shock, where the solar cell is the smallest unit for generating electricity, the solar cell module to take out electricity (output ) This is the minimum unit, which consists of connecting multiple cells in series and in parallel.

The general photovoltaic device uses a solar cell array in which a solar cell module is connected in series and parallel to provide sufficient electricity available, a storage battery for storing power, a power regulator for uniformly adjusting the power intensity, and a direct current. It is composed of peripheral devices such as inverters to convert to possible AC, and the site structure is mainly installed on the concrete floor surface or the road surface composed of earth and sand, and the solar cell array is mounted on the site structure.

In general, a solar cell array is made of a structure in which a plurality of solar cell modules are fixed to a grid-shaped frame. First, a frame of galvanized steel pipe material is fixed and installed on a field structure, and then a plurality of solar cell modules are arranged one by one on the frame. After fixing the fastening.

Meanwhile, in order to expand the photovoltaic device, an additional solar cell array is added.

In this case, the inverter must be additionally configured, which requires replacement of the inverter due to the expansion of the solar cell, and requires installation, commissioning, and maintenance by an expert. There was a problem that was time consuming and costly.

none.

The first object of the present invention for solving the above problems is to check the power generation state (current value, voltage value) of the solar cell array and provide the power generation state value to the main controller configured inside the modular inverter to present the current power generation state. Monitoring and releasing the contact of the specific inverting means which has failed among the plurality of inverting means individually configured inside the modular inverter, and operating by contacting the spare inverting means to prevent the whole operation system from stopping. have.

The second object of the present invention is to provide an easy expansion of the solar cell array by constructing a modular inverter to prevent the increase of the accompanying cost due to the installation of the inverter, and to enable efficient management.

SUMMARY OF THE INVENTION [0006] The present invention provides a solution for achieving the above object.

That is, a solar cell array comprising a plurality of solar cell strings are connected to a plurality of solar cell modules are connected;

A DC power block unit for checking a power generation state (current value, voltage value) of the solar cell array and providing the power generation state value to the main control unit, and generating an output voltage by transforming the generated voltage to provide a plurality of inverters;

Receives and stores the generation status value transmitted from the DC power block unit and the inverting information sent from the plurality of inverting means, and by determining the fault state of the inverting means to release the contact of the specific inverting means determined to be a failure A main controller for transmitting a contact release signal of a specific inverting means and a contact on signal of the spare inverting means to a contact selector to turn on the contact of the spare inverting means;

A contact selector for acquiring the contact release signal of the specific inverting means and the contact on signal of the spare inverting means sent from the main controller to execute a contact;

Receives the output voltage from the DC power block and inverts to AC voltage, and includes an inverting control unit and a communication module to check output voltage, AC voltage and current, and send the corresponding values to the main controller. Butting means;

And a spare inverting means for acquiring the contact on signal provided by the contact selector and performing inverting.

According to the above configuration, it is possible to solve the problems of the present invention.

The present invention has the following effects.

According to the modular inverter system for photovoltaic power generation of the present invention, the power generation state (current value, voltage value) of the solar cell array is checked and the power generation state value is provided to the main controller configured inside the modular inverter to present the current power generation state. By monitoring and at the same time releasing the contact point of a specific inverting means which has failed among a plurality of inverting means individually configured inside the modular inverter, and operating by contacting the spare inverting means to prevent the whole operation system from stopping. In addition, the convenience of monitoring and large-scale power failure can be prevented.

In addition, by constructing a modular inverter, by providing the ease of further expansion of the solar cell array to prevent the increase of the accompanying cost due to the installation of the inverter, it has the effect of enabling efficient management.

1 is a configuration example schematically showing a configuration of a modular inverter system for photovoltaic power generation according to an embodiment of the present invention,
Figure 2 is an exemplary block diagram of a DC power block unit of the modular inverter system for solar power generation according to an embodiment of the present invention,
3 is an exemplary block diagram of a main control unit of a modular inverter system for solar power generation according to an embodiment of the present invention;
4 is an exemplary inverting means block of a modular inverter system for photovoltaic power generation according to an embodiment of the present invention,
5 is an exemplary view of a remote monitoring means block of a modular inverter system for solar power generation according to an embodiment of the present invention,
Figure 6 is an illustration of a modular inverter of a modular inverter system for photovoltaic power generation according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

It should be understood, however, that the scope of the present invention is not limited to these embodiments, and all of the technical ideas that fall within the scope of the present invention are within the scope of the present invention.

1 is an exemplary configuration diagram schematically showing a configuration of a modular inverter system for solar power generation according to an embodiment of the present invention.

Referring to FIG. 1, the present invention is a modular inverter system for solar power generation, a solar cell array 100, a DC power block unit 200, a main controller 300, a contact selector 400, and a plurality of inverting means. 500, the spare inverting means 600 is configured.

The solar cell array 100 is configured by a plurality of solar cell strings 120, which are configured by connecting a plurality of solar cell modules 110.

That is, the solar cell module 110, the solar cell module 110, a plurality of solar cells module 110, the form of a panel formed by forming a plurality of solar cells 120, two or more solar The form in which the cell strings 120 are connected in parallel is defined as the solar cell array 100.

The DC power block unit 200 checks the power generation state (current value, voltage value) of the solar cell array and provides the power generation state value to the main control unit and transforms the generated voltage to generate an output voltage to a plurality of inverters. Perform the function provided.

In other words, the inverter is transformed into an output voltage for input to the inverter. In general, the inverter is designed in consideration of the maximum power that can be generated in the solar cell array, and in order to perform this efficiently, the inverter has a constant input voltage range. In consideration of this, the output voltage is generated.

As shown in FIG. 2 to perform the above function, the DC power block unit 200 checks the power generation state (current value, voltage value) of the solar cell array and provides a power generation state check for providing it to the main controller. Module 210, the DC power block communication module 220 for transmitting the power generation state value checked by the power generation state check module, the voltage generated by the solar cell array to transform the output voltage for providing the inverter It is configured to include a transformer module 230 for.

That is, the power generation state check module 210 checks the power generation state (current value, voltage value) of the solar array and transfers it to the DC power block communication module 220 and through the DC power block communication module 220 The values are sent to the main controller.

In addition, the transformer module 230 transforms the voltage generated by the solar cell array into an output voltage for providing the inverter. The transformer module 230 is transformed by adjusting the degree of transformation, and thus the detailed description thereof will be omitted. .

The main controller 300 receives and stores the power generation state value transmitted from the DC power block unit and the inverting information transmitted from the plurality of inverting means, and determines the fault state of the inverting means to determine a specific cause determined as a fault. The contact release signal of the specific inverting means and the contact on signal of the spare inverting means are sent to the contact selector to release the contact of the butting means and turn on the contact of the spare inverting means.

To this end, as shown in FIG. 3, the main controller 300 obtains a generation state value transmitted from the DC power block unit and stores the generation state value obtaining module 310 for storing in a generation state storage module. Inverting information acquisition module 320 for acquiring the information transmitted from the means and storing it in the power generation state storage module, the power generation state for storing the power generation state value provided from the power generation state value acquisition module and the inverting information provided from the inverting information acquisition module. Storage module 330, the failure determination module 340 for determining whether the inverting means failure by extracting the inverting information of the plurality of inverting means stored in the power generation state storage module, determined by the failure determination module As a result, it generates a contact release signal for releasing a contact of a specific inverting means that is determined to be a fault, sends it to the contact selector, and generates a contact on signal. It is configured to include a contact control module 350 for sending a contact signal on a spare inverting means.

The power generation state value acquisition module 310 obtains the power generation state value transmitted from the DC power block unit and stores the power generation state value in the power generation state storage module.

In addition, the inverting information acquisition module 320 is configured to obtain information transmitted from the plurality of inverting means and to store the generated state storage module.

At this time, the power generation state storage module may be configured to include the unique identification information to determine which information provided by the inverting means.

Therefore, the power generation state storage module 330 stores the power generation state value provided from the power generation state value acquisition module and the inverting information provided from the inverting information acquisition module.

Meanwhile, the failure determination module 340 extracts the inverting information of the plurality of inverting means stored in the power generation state storage module to determine whether the inverting means have a failure.

That is, the output voltage (inverter input voltage), the current measured for each inverting means, the inverted AC voltage, and the like are extracted to determine a specific inverting means that has failed.

Accordingly, the contact control module 350 generates a contact release signal for releasing a contact of a specific inverting means whose determination result is judged to be a failure by the fault determination module, sends it to the contact selector, and generates a contact on signal. By sending a contact-on signal to the spare inverting means by the specific inverting means to cut off the connection, and to connect the spare inverting means.

In this case, it is possible to prevent the entire power generation system from shutting down, thereby preventing a large instantaneous power failure.

The contact selector 400 acquires the contact release signal of the specific inverting means and the contact on signal of the spare inverting means transmitted from the main controller, so that the specific inverting means performs contact release, and the spare inverting means is the contact. Will be run.

On the other hand, a plurality of inverting means 500 as shown in Figure 4 receives the output voltage from the DC power block unit and inverts to the AC voltage, including the inverting control unit and the communication module is configured to output voltage, AC It checks voltage and current and sends the values to the main controller.

The inverting means is composed of four switching elements. As a general modular power element, an Insulated Gate Bipolar Transistor (IGBT) or an Intelligent Power Module (IPM) may be used.

In addition, a driver for power on / off control of the switching device is typically configured, and a module for controlling phase synchronization is typically configured.

At this time, the plurality of inverting means 500 of the present invention,

Inverting unit 510 for receiving an output voltage from the DC power block unit to invert to an AC voltage,

DC voltage check module 521 for checking the output voltage of the DC power block unit input to the inverting unit, inverting control module 522 for providing the inverting signal to the inverting unit, inverting by the inverting unit AC voltage check module 523 to check the AC voltage, the current check module 524 for checking the current after inverting by the inverting unit, the DC voltage check module, the inverting control module, AC voltage check The module includes an inverting control unit 520 including a communication module 525 for transmitting the information processed by the current check module to the main control unit.

That is, the inverting unit is inverted, and additionally, the inverting control unit is configured.

Therefore, when the communication between the inverting control unit and the main control unit is configured, various information can be obtained from the main control unit.

The DC voltage check module 521 checks the output voltage of the DC power block unit input to the inverting unit, and provides an inverting signal to the inverting unit through the inverting control module 522 to perform the inverting. do.

In addition, the AC voltage check module 523 checks the AC voltage inverted by the inverting unit, and the current check module 524 checks the current after inverting by the inverting unit.

As described above, the reason for checking the output voltage, the AC voltage, and the currents is to transmit the checked values to the main controller to determine whether there is a failure in real time.

Therefore, the information processed by the DC voltage check module, the inverting control module, the AC voltage check module, and the current check module is transmitted to the main controller through the communication module 525.

In addition, the spare inverting means 600 performs the inverting by acquiring the contact on signal provided by the contact selector.

That is, when a specific inverting means fails, all power generation systems stop operating. In order to prevent this, the specific inverting means is temporarily blocked, and the spare inverting means is operated to perform the inverting operation. will be.

On the other hand, when a problem occurs during inverting, it is not only configured to promptly check whether there is a failure by providing it to the main controller, but also additionally configures the AC power block unit 800 to determine an imbalance of AC voltage supplied from a plurality of inverting means. It is also possible to provide specific inverting means information for supplying an unbalanced AC voltage to the main controller.

In other words, when determining the specific inverting means that the AC voltage is imbalanced and providing the information to the main control unit, the main control unit blocks the specific inverting means and operates the spare inverting means to replace it.

On the other hand, the system according to an additional configuration of the present invention is configured to include a remote monitoring means 700, as shown in FIG.

The main control unit 300 to perform monitoring at a remote location,

It further comprises a main control unit communication module 360 for providing the remote monitoring means the information of the specific inverting means and the power generation status value and the contact signal of the spare inverting means.

Therefore, the information on the specific inverting means, the power generation status value, the contact signal at the time of contact of the spare inverting means, etc. are provided to the remote monitoring means through the main control unit communication module.

And, as shown in Figure 5, the remote monitoring means 700 generates a local power information DB 710 for storing the information provided through the main control unit communication module, a replacement signal for a specific faulty inverting means Replacement signal generation unit 720 for outputting to the screen, a replacement completion input unit 730 for inputting the completion of the replacement, when the replacement of the specific inverting means failed, when the replacement completion input signal obtained by the replacement completion input unit, the main control unit And a replacement contact controller 740 for providing a contact release signal of the specific inverting means replaced with the contact release signal of the spare inverting means.

That is, the information received through the main control unit communication module is stored in the local power information DB, and the corresponding information is provided on the monitoring screen.

For example, when the inverter management program is installed and configured on the remote monitoring means and the corresponding program is executed, the respective solar cell arrays, modular inverters, power generation status values, and fault status information for monitoring are output on the screen.

If a specific faulty inverting means is generated, the replacement signal generation unit 720 generates a replacement signal and outputs the replacement signal to the screen.

For example, alarms, buzzers, pop-ups, and blinks make it easy for administrators to recognize them.

Thereafter, the manager replaces the specific inverting means, and selects the replacement completion input window or button provided on the screen through the replacement completion input unit 730, and the replacement contact control unit 740 completes the replacement by the replacement completion input unit. Upon acquiring the input signal, the main controller remotely provides the contact on signal of the specific inverting means replaced with the contact release signal of the spare inverting means.

In this way, dual monitoring is possible not only in the field but also in the remote area, which provides the advantage of quick action.

Meanwhile, as shown in FIG. 6, in the system of the present invention, the main controller, the contact selector, the plurality of inverting means, the spare inverting means, and the AC power block unit are constituted by one module 1000. Can be configured to install in a rack.

That is, it is only necessary to connect the modular inverter 1000 to the terminal configured in the DC power block.

In this way, by constructing a modular inverter, it provides the ease of additional expansion of the solar cell array to prevent the increase of the accompanying cost due to the installation of the inverter, and has the effect of enabling efficient management.

For example, when the generated power is less than 5kw, one inverting means is modularized because it is a single phase, but in the case of three phases as illustrated in the present invention, three inverting means are modularized.

In this configuration, even if one of the three phases fails, the two phases can be used as a V phase connection.

In addition, if the power generation amount of 100KW, it is only 10KW per module to mount 10 in the system rack, providing the ease of additional expansion of the solar cell array to prevent the increase of incidental costs due to the inverter installation, efficient management Will be able to achieve the possible advantages.

By the above configuration and operation, the power generation state (current value, voltage value) of the solar cell array is checked and the power generation state value is provided to the main controller configured inside the modular inverter to monitor the current power generation state and simultaneously The convenience of monitoring can be prevented by releasing the contact of a specific inverting means which has a failure among a plurality of inverting means individually configured inside the inverter and operating by contacting the spare inverting means to prevent the whole operation system from stopping. It is possible to prevent large-scale instantaneous blackouts.

Thus, although one embodiment of a modular inverter system for photovoltaic power generation to which the technical idea of the present invention is applied has been described, there may be various modified inventions having the same technical idea, which also belongs to the scope of the present invention. Do.

100: solar cell array
200: DC power block
300: main control unit
400: contact selector
500: inverting means
600: spare inverting means
700: remote monitoring means
800: AC power block
1000: Modular Inverter

Claims (7)

In the solar power inverter system,
A solar cell array 100 configured by connecting a plurality of solar cell strings 120 connected to a plurality of solar cell modules 110;
DC power block unit 200 to check the power generation state (current value, voltage value) of the solar cell array to provide the power generation state value to the main control unit, and to generate the output voltage by transforming the generated voltage to provide a plurality of inverters ;
Receives and stores the generation status value transmitted from the DC power block unit and the inverting information sent from the plurality of inverting means, and by determining the fault state of the inverting means to release the contact of the specific inverting means determined to be a failure A main controller 300 for transmitting a contact release signal of the specific inverting means and a contact on signal of the spare inverting means to the contact selector to turn on the contact of the spare inverting means;
A contact selector 400 for acquiring the contact release signal of the specific inverting means and the contact on signal of the spare inverting means sent from the main controller to execute the contact;
Receives the output voltage from the DC power block and inverts to AC voltage, and includes an inverting control unit and a communication module to check output voltage, AC voltage and current, and send the corresponding values to the main controller. Butting means 500;
And a spare inverting means 600 for acquiring the contact on signal provided by the contact selector to perform the inverting.

The main control unit 300,
It further comprises a main control unit communication module 360 for providing the remote monitoring means the information of the specific inverting means and the power generation status value and the contact signal of the spare inverting means,
A local power information DB 710 for storing information provided through the main control unit communication module;
A replacement signal generation unit 720 for generating a replacement signal for a specific failed inverting means and outputting the replacement signal to a screen;
When the replacement of the specific inverting means failed, the replacement completion input unit 730 for inputting the completion of the replacement,
And a replacement contact controller 740 for providing a contact release signal of a spare inverting means and a contact on signal of a specific inverting means replaced by the main control unit when acquiring a replacement completion input signal by the replacement completion input unit. Remote monitoring means 700; modular inverter system for photovoltaic power generation, characterized in that it further comprises.
delete In the solar power inverter system,
A solar cell array 100 configured by connecting a plurality of solar cell strings 120 connected to a plurality of solar cell modules 110;
DC power block unit 200 to check the power generation state (current value, voltage value) of the solar cell array to provide the power generation state value to the main control unit, and to generate the output voltage by transforming the generated voltage to provide a plurality of inverters ;
Receives and stores the generation status value transmitted from the DC power block unit and the inverting information sent from the plurality of inverting means, and by determining the fault state of the inverting means to release the contact of the specific inverting means determined to be a failure A main controller 300 for transmitting a contact release signal of the specific inverting means and a contact on signal of the spare inverting means to the contact selector to turn on the contact of the spare inverting means;
A contact selector 400 for acquiring the contact release signal of the specific inverting means and the contact on signal of the spare inverting means sent from the main controller to execute the contact;
Receives the output voltage from the DC power block and inverts to AC voltage, and includes an inverting control unit and a communication module to check output voltage, AC voltage and current, and send the corresponding values to the main controller. Butting means 500;
Spare inverting means (600) for acquiring the contact on signal provided by the contact selector and performing inverting; And
An AC power block unit 800 for determining the imbalance of the AC voltage supplied from the plurality of inverting means and providing specific inverting means information for supplying the unbalanced AC voltage to the main controller;
Modular inverter system for photovoltaic power generation, characterized in that it further comprises.
In the solar power inverter system,
A solar cell array 100 configured by connecting a plurality of solar cell strings 120 connected to a plurality of solar cell modules 110;
DC power block unit 200 to check the power generation state (current value, voltage value) of the solar cell array to provide the power generation state value to the main control unit, and to generate the output voltage by transforming the generated voltage to provide a plurality of inverters ;
Receives and stores the generation status value transmitted from the DC power block unit and the inverting information sent from the plurality of inverting means, and by determining the fault state of the inverting means to release the contact of the specific inverting means determined to be a failure A main controller 300 for transmitting a contact release signal of the specific inverting means and a contact on signal of the spare inverting means to the contact selector to turn on the contact of the spare inverting means;
A contact selector 400 for acquiring the contact release signal of the specific inverting means and the contact on signal of the spare inverting means sent from the main controller to execute the contact;
Receives the output voltage from the DC power block and inverts to AC voltage, and includes an inverting control unit and a communication module to check output voltage, AC voltage and current, and send the corresponding values to the main controller. Butting means 500;
And a spare inverting means 600 for acquiring the contact on signal provided by the contact selector to perform the inverting.

The DC power block unit 200,
Power generation state check module 210 for checking the power generation state (current value, voltage value) of the solar cell array to provide to the main control unit,
DC power block communication module 220 for transmitting the power generation state value checked by the power generation state check module to the main control unit,
And a transformer module for transforming the voltage generated by the solar cell array into an output voltage for providing the inverter.
In the solar power inverter system,
A solar cell array 100 configured by connecting a plurality of solar cell strings 120 connected to a plurality of solar cell modules 110;
DC power block unit 200 to check the power generation state (current value, voltage value) of the solar cell array to provide the power generation state value to the main control unit, and to generate the output voltage by transforming the generated voltage to provide a plurality of inverters ;
Receives and stores the generation status value transmitted from the DC power block unit and the inverting information sent from the plurality of inverting means, and by determining the fault state of the inverting means to release the contact of the specific inverting means determined to be a failure A main controller 300 for transmitting a contact release signal of the specific inverting means and a contact on signal of the spare inverting means to the contact selector to turn on the contact of the spare inverting means;
A contact selector 400 for acquiring the contact release signal of the specific inverting means and the contact on signal of the spare inverting means sent from the main controller to execute the contact;
Receives the output voltage from the DC power block and inverts to AC voltage, and includes an inverting control unit and a communication module to check output voltage, AC voltage and current, and send the corresponding values to the main controller. Butting means 500;
And a spare inverting means 600 for acquiring the contact on signal provided by the contact selector to perform the inverting.

The main control unit 300,
Generating state value acquisition module 310 for acquiring the generating state value transmitted from the DC power block unit and stored in the generating state storage module,
Inverting information acquisition module 320 for acquiring information transmitted from a plurality of inverting means to store in the power generation state storage module,
A generation state storage module 330 for storing the generation state value provided from the generation state value obtaining module and the inverting information provided from the inverting information acquisition module;
Failure determination module 340 for determining whether the inverting means failure by extracting the inverting information of a plurality of inverting means stored in the power generation state storage module,
As a result of the failure determination module, a contact release signal for generating a contact release signal for releasing a contact of a specific inverting means determined to be a fault is generated and sent to a contact selector, and a contact on signal is generated for a spare inverting means. Modular inverter system for photovoltaic power generation, characterized in that comprises a contact control module 350 for transmitting a.
In the solar power inverter system,
A solar cell array 100 configured by connecting a plurality of solar cell strings 120 connected to a plurality of solar cell modules 110;
DC power block unit 200 to check the power generation state (current value, voltage value) of the solar cell array to provide the power generation state value to the main control unit, and to generate the output voltage by transforming the generated voltage to provide a plurality of inverters ;
Receives and stores the generation status value transmitted from the DC power block unit and the inverting information sent from the plurality of inverting means, and by determining the fault state of the inverting means to release the contact of the specific inverting means determined to be a failure A main controller 300 for transmitting a contact release signal of the specific inverting means and a contact on signal of the spare inverting means to the contact selector to turn on the contact of the spare inverting means;
A contact selector 400 for acquiring the contact release signal of the specific inverting means and the contact on signal of the spare inverting means sent from the main controller to execute the contact;
Receives the output voltage from the DC power block and inverts to AC voltage, and includes an inverting control unit and a communication module to check output voltage, AC voltage and current, and send the corresponding values to the main controller. Butting means 500;
And a spare inverting means 600 for acquiring the contact on signal provided by the contact selector to perform the inverting.

The plurality of inverting means 500,
Inverting unit 510 for receiving an output voltage from the DC power block unit to invert to an AC voltage,
DC voltage check module 521 for checking the output voltage of the DC power block unit input to the inverting unit,
Inverting control module 522 for providing an inverting signal to the inverting unit,
AC voltage check module 523 for checking the AC voltage inverted by the inverting unit,
A current check module 524 for checking the current after inverting by the inverting unit,
And an inverting control unit 520 including a communication module 525 for transmitting the information processed by the DC voltage check module, the inverting control module, the AC voltage check module, and the current check module to the main controller. Modular inverter system for solar power, characterized in that.
In the solar power inverter system,
A solar cell array 100 configured by connecting a plurality of solar cell strings 120 connected to a plurality of solar cell modules 110;
DC power block unit 200 to check the power generation state (current value, voltage value) of the solar cell array to provide the power generation state value to the main control unit, and to generate the output voltage by transforming the generated voltage to provide a plurality of inverters ;
Receives and stores the generation status value transmitted from the DC power block unit and the inverting information sent from the plurality of inverting means, and by determining the fault state of the inverting means to release the contact of the specific inverting means determined to be a failure A main controller 300 for transmitting a contact release signal of the specific inverting means and a contact on signal of the spare inverting means to the contact selector to turn on the contact of the spare inverting means;
A contact selector 400 for acquiring the contact release signal of the specific inverting means and the contact on signal of the spare inverting means sent from the main controller to execute the contact;
Receives the output voltage from the DC power block and inverts to AC voltage, and includes an inverting control unit and a communication module to check output voltage, AC voltage and current, and send the corresponding values to the main controller. Butting means 500;
And a spare inverting means 600 for acquiring the contact on signal provided by the contact selector to perform the inverting.

The main control unit, the contact selector, a plurality of inverting means, spare inverting means, AC power module inverter system for solar power, characterized in that consisting of one module (1000).

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