Apparatus for managing solar modules

Abstract

According to one aspect, an apparatus for managing a solar module comprises: a communication unit for receiving a power line communication signal from at least one solar module array or transmitting the power line communication signal to the at least one solar module array; and a bypass unit forming a first communication path connecting the communication unit to the at least one solar module array, where the first communication path operates as an alternative path to a second communication path connecting the communication unit to an inverter.

Description

Technical Field

[0001] The present disclosure relates to an apparatus for managing a solar module, and more particularly, to an apparatus for managing a plurality of solar module control devices included in a solar module array by using power line communication. Background Art

[0002] The solar power generation system can periodically detect the voltage, current, and temperature of the solar modules through a solar module control device connected to each solar module, and provide the detected information to the outside through power line communication.

[0003] However, the solar power generation system is configured to connect an inverter in series with the solar module control device. Therefore, when the inverter is disconnected from the solar power generation system, the path for power line communication is interrupted. In this case, information about the solar modules detected by the solar module control device cannot be viewed from outside the solar power generation system. Summary of the Invention Technical issues

[0004] The present disclosure provides a device for managing solar modules. The technical problems to be solved are not limited to the above technical problems, and other existing technical problems can also be solved. Solution to the problem

[0005] According to one aspect, an apparatus for managing solar modules includes: a communication unit for receiving power line communication signals from or transmitting power line communication signals to at least one solar module array; and a bypass unit for forming a first communication path connecting the communication unit to the at least one solar module array, wherein the first communication path operates as an alternative to a second communication path connecting the communication unit to an inverter.

[0006] According to another aspect, an apparatus for managing solar modules includes: a communication unit for receiving power line communication signals from or transmitting power line communication signals to at least one solar module array; at least one first input / output port including: a first positive port connected to the at least one solar module array and the communication unit, and a first negative port connected to the at least one solar module array and an inverter; at least one second input / output port including: a second positive port connected to the communication unit and the inverter, and a second negative port connected to the inverter and the first negative port; and at least one bypass unit forming a first communication path connecting the communication unit and the first negative port, wherein the first communication path operates as an alternative path to a second communication path connecting the communication unit to the second positive port. Advantageous Effects of the Invention

[0007] Even when the inverter is disconnected from the solar power generation system, the path for power line communication between the solar module array and the communication unit can be maintained. Therefore, regardless of whether the inverter is disconnected, the plurality of solar module control devices included in the solar module array can be managed.

[0008] Furthermore, even when the inverter is disconnected from the solar power generation system, the plurality of solar module control devices can be monitored, thereby enabling safe installation or maintenance work on the solar power generation system. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 and Figure 2 is a circuit diagram illustrating an example of a solar module management apparatus according to an embodiment.

[0010] Figure 3 is a diagram illustrating an example of the flow of a power line communication signal when an inverter is connected to a solar power generation system according to the embodiment.

[0011] Figure 4 is a diagram illustrating an example of the flow of a power line communication signal when an inverter is disconnected from a solar power generation system according to an embodiment.

[0012] Figure 5 and Figure 6 : is a diagram illustrating an example of a power line communication process in a solar power generation system to which the solar module management apparatus according to the embodiment is applied.

[0013] Figure 7 is a circuit diagram illustrating another example of a solar module management apparatus according to an embodiment.

[0014] Figure 8 is a diagram showing another example of the flow of a power line communication signal when an inverter is connected to a solar power generation system according to the embodiment.

[0015] Figure 9 is a diagram illustrating another example of the flow of a power line communication signal when the inverter is disconnected from the solar power generation system according to the embodiment.

[0016] Figure 10 FIG. 1 is a diagram for explaining an example of supplying power to a building in which a solar module is installed according to an embodiment. DETAILED DESCRIPTION Best Mode for Carrying Out the Invention

[0017] According to one aspect, an apparatus for managing solar modules includes: a communication unit for receiving power line communication signals from or transmitting power line communication signals to at least one solar module array; and a bypass unit for forming a first communication path connecting the communication unit to the at least one solar module array, wherein the first communication path operates as an alternative to a second communication path connecting the communication unit to an inverter. Mode for the Invention

[0018] Although the terms used in the embodiments are selected from currently widely used general terms as much as possible, these terms may be replaced by other terms based on the intention, custom, emergence of new technologies, etc. of those of ordinary skill in the art. In certain circumstances, the terms arbitrarily selected by the applicant may be used. In this case, the meaning of these terms will be described in the corresponding parts of the embodiments. Therefore, it should be noted that the terms used in this specification are interpreted based on their actual meaning and the full content of this specification, rather than simply being interpreted based on the name of the term.

[0019] Unless otherwise described in the context, when a part of the specification is referred to as "including" components, this does not mean excluding other components, but rather means that other components may be included. In addition, terms described in the specification, such as "unit" and "module", mean a unit that processes at least one function or operation and can be implemented in hardware or software or a combination of hardware and software.

[0020] Terms including ordinal numbers used in this specification, such as "first" or "second", may be used to describe various components, but the components are not limited by these terms. These terms may be used to distinguish one component from another.

[0021] Hereinafter, preferred embodiments of the present disclosure will be described with reference to the accompanying drawings. The description below, which will be described in conjunction with the accompanying drawings, is intended to describe exemplary embodiments of the present disclosure and is not intended to describe the only embodiment in which the present disclosure can be implemented. In order to clearly illustrate the present disclosure in the accompanying drawings, parts that are not relevant to the description may be omitted, and the same reference numerals may be used throughout the specification for the same or similar components.

[0022] Figure 1 and Figure 2 is a circuit diagram illustrating an example of a solar module management apparatus according to an embodiment.

[0023] refer to Figure 1 and Figure 2 The solar module management device (hereinafter referred to as module management device) 100 may include: a communication unit 110, a connection unit 120 and a bypass unit 130. However, in addition to Figure 1 and Figure 2 In addition to the components shown, the module management device 100 may also include other components. Alternatively, the module management device 100 may also omit Figure 1 and Figure 2 A portion of the components shown.

[0024] The module management device 100 may be a device for managing a plurality of solar module control devices (hereinafter referred to as module control devices) 220 included in a plurality of solar modules 210 included in a solar module array 200. For example, the module management device 100 may be a master unit for managing the plurality of module control devices 220.

[0025] The solar module array 200 may include a plurality of solar modules 210. The plurality of solar modules 210 included in the solar module array 200 may be connected to each other in series or in parallel. The module control device 220 may be connected to each of the plurality of solar modules 210 included in the solar module array 200. Figure 1 In the embodiment, a single solar module array 200 is shown, but the present invention is not limited thereto. In other words, depending on the design of the solar power generation system, two or more solar module arrays 200 may be included in the solar power generation system.

[0026] The module control device 220 can detect information related to the solar module 210 (e.g., voltage, current, temperature, etc.) and transmit the detected information to an external device (e.g., the module management device 100) via power line communication. In some embodiments, the module control device 220 can receive a rapid shutdown (RSD) signal transmitted by an external device (e.g., the module management device 100) via power line communication and can stop the operation of the solar module 210 upon receiving the rapid shutdown signal.

[0027] For example, the module control device 220 may be implemented as a module-level power conversion device (or module-level power electronic device) (hereinafter referred to as "MLPE"). The module control device 220 may perform various functions, such as voltage monitoring, current monitoring, power monitoring, temperature monitoring, and rapid shutdown, to optimize the power generation performance of the solar module 210. For example, the module control device 220 may also be referred to as an MLPE or a rapid shutdown (RSD) device.

[0028] For example, the MLPE can be an optimizer or a microinverter.

[0029] As an example, when the MLPE is an optimizer, the solar power generation system may include a single inverter. In this case, the single MLPE may be connected to a single solar module and optimize the power output from the single solar module and output it to a single inverter (e.g., a string inverter). The power converted by the inverter (e.g., converting DC power to AC power) may be output to a load or the grid.

[0030] As another example, when the MLPE is a microinverter, a single MLPE can be connected to a single solar module. In this case, the MLPE can convert the power generated by the single solar module, and the converted power can be output to a load or a grid.

[0031] The module control device 220 may be included in the solar module 210. For example, the module control device 220 may be disposed on the back surface of the solar panel of the solar module 210. The module control device 220 may be electrically connected to the solar panel of the solar module 210 to control the current or voltage generated by the solar panel. The solar panel may include a plurality of solar cells. For example, a solar panel may be referred to as a photovoltaic panel or photovoltaic cell.

[0032] The communication unit 110 may be a device for communicating between the module control device 220, the inverter 300, and the module management device 100. The communication unit 110 may be connected to the solar module array 200 and the inverter 300 for power line communication. The communication unit 110 may transmit a power line communication signal (e.g., a rapid shutdown signal) to the module control device 220 included in the solar module array 200. In some embodiments, the communication unit 110 may receive a power line communication signal (e.g., a signal for information related to the solar module 210) transmitted by the module control device 220 included in the solar module array 200.

[0033] like Figure 2 As shown, the communication unit 110 may include a transceiver module 111 and a coupling module 112. However, the components of the communication unit 110 are not limited to Figure 2 The components shown in , and may include other components.

[0034] The transceiver module 111 may include a transceiver and a control device for controlling the transceiver. For example, the transceiver module 111 may be a power line communication modem and may modulate / demodulate and transmit / receive power line communication signals. The coupling module 112 may include a coupling transformer and a coupling capacitor. The coupling transformer combines and disconnects the power signal and the power line communication signal. The coupling capacitor is directly connected to the coupling transformer and forms an inductor-capacitor (LC) filter.

[0035] The communication unit 110 may be connected to a processor configured to control the communication unit 110. The processor may receive a power line communication (PLC) signal (e.g., a signal for information related to the solar module 210) through the communication unit 110 and may process (store and manage) the received PLC signal. When a preset condition is met or a user input is received, the processor may generate a PLC signal (e.g., a rapid shutdown signal) and transmit the generated PLC signal to an external device (e.g., the solar module array 200).

[0036] For example, the processor can process the commands of a computer program by performing basic arithmetic, logic, and input / output operations. In this regard, the commands can be provided by a memory or an external device. In some embodiments, the processor can generally control the operations of other components included in the communication unit 110.

[0037] In some embodiments, the processor can perform at least some of the data analysis, processing, and result information generation for performing the above operations by using at least one of a machine learning, neural network, or deep learning algorithm as a rule-based algorithm or artificial intelligence algorithm. Examples of the neural network are models such as convolutional neural networks (CNNs), deep neural networks (DNNs), and recurrent neural networks (RNNs).

[0038] For example, the processor may be implemented as an array of multiple logic gates, or may be implemented as a combination of a general-purpose microprocessor and a memory, the memory being used to store programs that can be executed on the microprocessor. For example, the processor may include: a general-purpose processor, a central processing unit (CPU), a microprocessor, a digital signal processor (DSP), a controller, a microcontroller, a state machine, etc. In some environments, the processor 110 may include: an application-specific integrated circuit (ASIC), a programmable logic device (PLD), a field programmable gate array (FPGA), etc. For example, the processor 110 may refer to a combination of processing devices, such as a combination of a digital signal processor (DSP) and a microprocessor, a combination of multiple microprocessors, a combination of one or more microprocessors combined with a digital signal processor (DSP) core, or a combination of any other such configurations.

[0039] Continue to refer Figure 1 , the connection unit 120 can connect the communication unit 110 to the inverter 300. The connection unit 120 can electrically connect one end of the communication unit 110 to the positive terminal of the inverter 300 through the power line. More specifically, the switch 400 that controls the connection of the inverter 300 can be connected to the positive terminal of the inverter 300, and the connection unit 120 can be configured to connect the communication unit 110 to the switch 400.

[0040] In the above-described embodiment, the switch 400 is disposed outside the inverter 300. However, the switch 400 may also be disposed inside the inverter 300. For example, the switch 400 may be disposed at both the positive and negative poles of the inverter 300, but the present invention is not limited thereto. In other words, the switch 400 may be disposed at only one of the positive and negative poles of the inverter 300.

[0041] The bypass unit 130 may connect the communication unit 110 to the solar module array 200 . The bypass unit 130 may electrically connect one end of the communication unit 110 to the negative electrode of the solar module array 200 .

[0042] The communication path formed by the bypass unit 130 may correspond to an alternative path to the communication path formed by the connection unit 120. In other words, the communication unit 110 and the solar module array 200 are connected via the bypass unit 130 to form a first communication path, and the communication unit 110 and the inverter 300 are connected via the connection unit 120 to form a second communication path. The first communication path may function as an alternative path to the second communication path.

[0043] For example, when the inverter 300 is disconnected from the solar power generation system, the bypass unit 130 can connect the solar module array 200 to the communication unit 110 to form a closed circuit. When the inverter 300 is disconnected from the solar power generation system, the bypass unit 130 connects the solar module array 200 and the communication unit 110 to each other, thereby enabling power line communication between the solar module array 200 and the communication unit 110.

[0044] For example, the bypass unit 130 may include an alternating current (AC) coupling capacitor 131 that allows power line communication signals to pass through. The AC coupling capacitor 131 may allow power line communication signals transmitted through the power line to pass through, and may block power signals transmitted through the power line. In other words, the AC coupling capacitor 131 may allow AC signals flowing through the power line to pass through, and may block direct current (DC) signals flowing through the power line.

[0045] Figure 3 is a diagram illustrating an example of the flow of a power line communication signal when an inverter is connected to a solar power generation system according to the embodiment.

[0046] refer to Figure 3, when the inverter 300 is normally connected to the solar power generation system, the power line communication signal can flow as shown by the arrow. In other words, when the inverter 300 is connected to the solar power generation system, the power line communication signal can be sent and received through the second communication path. For example, when the switch 400 connected to the inverter 300 is in the on state, the power line communication signal can flow through the power line communication path (i.e., the second communication path) formed in the following order: one of the positive and negative poles of the solar module array 200 (e.g., the positive pole) - communication unit 110 - inverter 300 - the other of the positive and negative poles of the solar module array 200 (e.g., the negative pole).

[0047] Figure 4 is a diagram illustrating an example of the flow of a power line communication signal when an inverter is disconnected from a solar power generation system according to an embodiment.

[0048] refer to Figure 4 , when the inverter 300 is disconnected from the solar power generation system, the power line communication signal can flow as shown by the arrow. In other words, when the inverter 300 is disconnected from the solar power generation system, the power line communication signal can be sent and received through the first communication path. For example, when the switch 400 connected to the inverter 300 is in the disconnected (OFF) state, the power line communication signal can flow through the power line communication path (i.e., the first communication path) formed in the following order: one of the positive and negative poles of the solar module array 200 (e.g., the positive pole) - the communication unit 110 - the other of the positive and negative poles of the solar module array 200 (e.g., the negative pole).

[0049] As described above, according to an embodiment of the present application, even when the inverter 300 is disconnected from the solar power generation system, the module management device 100 still maintains a power line communication path with the solar module array 200, thereby enabling management of the plurality of module control devices 220 included in the solar module array 200 regardless of whether the inverter 300 is disconnected.

[0050] Furthermore, in this embodiment, even when the inverter 300 is disconnected from the solar power generation system, the power line communication path with the solar module array 200 is maintained. Therefore, even when the inverter 300 is disconnected from the solar power generation system, the module control device 220 can be monitored. Therefore, installation or maintenance work on the solar power generation system can be performed safely.

[0051] Figure 5 and Figure 6 : is a diagram illustrating an example of a power line communication process in a solar power generation system to which the solar module management apparatus according to the embodiment is applied.

[0052] refer to Figure 5 and Figure 6 , the solar power generation system may include a module management device 100, a plurality of solar modules 210, a plurality of module control devices 220, an inverter 300, a server 500 and an energy management system (EMS) 600. However, in addition to Figure 5 and Figure 6 In addition to the components shown, the solar power generation system may also include other components. Alternatively, the solar power generation system may omit Figure 5 and Figure 6 Some components shown.

[0053] The server 500 may generate a control signal for controlling the solar module 210 based on user input and transmit the control signal to the energy management system 600. In some embodiments, the server 500 may receive a signal (e.g., a monitoring signal) transmitted by the energy management system 600 and provide the received signal to the user.

[0054] The energy management system 600 may receive a control signal sent by the server 500 and send the received control signal to the module management device 100. The energy management system 600 may receive a signal (eg, a monitoring signal, etc.) sent by the module management device 100 and send the received signal to the server 500.

[0055] The module management device 100 may receive a control signal transmitted by the energy management system 600 and transmit the received control signal to the module control device 220. The module management device 100 may receive a signal (e.g., a monitoring signal, etc.) transmitted by the module control device 220 and transmit the received signal to the energy management system 600.

[0056] When the inverter 300 is connected to a solar power generation system, a Figure 5 When the inverter 300 is connected to the solar power generation system, the module management device 100 can be connected to the solar power generation system by the power line communication path indicated by the dotted line. Figure 5 The power line communication path indicated by the dotted line in FIG is used to send and receive signals.

[0057] In some embodiments, when the inverter 300 is disconnected from the solar power generation system, a Figure 6That is, when the inverter 300 is disconnected from the solar power generation system, a power line communication path that does not include the inverter 300 can be formed. When the inverter 300 is disconnected from the solar power generation system, the module management device 100 can be connected to the power line communication path indicated by the dotted line. Figure 6 The power line communication path indicated by the dotted line in FIG is used to send and receive signals.

[0058] In this way, regardless of whether the inverter 300 is disconnected from the solar power generation system, this embodiment enables communication between the server 500, the energy management system 600, the module management device 100, and the solar module array (i.e., the plurality of solar modules 210 and the plurality of module control devices 220). Therefore, the safety of the solar power generation system can be improved.

[0059] Figure 7 is a circuit diagram illustrating another example of a solar module management apparatus according to an embodiment.

[0060] refer to Figure 7 , the module management device 100 may include: a communication unit 110, a connection unit 120, a bypass unit 130, a first input / output port 140 and a second input / output port 150. For example, in Figure 1 The module management device 100 shown is based on Figure 7 The module management device 100 shown may further include a first input / output port 140 and a second input / output port 150. Figure 7 Included with Figure 1 Detailed description of the components in the same.

[0061] The first input / output port 140 may include a first positive terminal 141 and a first negative terminal 142 . The first positive terminal 141 may be configured to be connected to the positive terminal of the solar module array 200 and the communication unit 110 .

[0062] For example, the first positive terminal 141 can be connected to the solar module array 200 via a power line. The first negative terminal 142 can be configured to be connected to the negative pole of the solar module array 200 and the inverter 300. The first negative terminal 142 can be connected to the negative pole of the solar module array 200 via a power line.

[0063] The second input / output port 150 may include a second positive terminal 151 and a second negative terminal 152 . The second positive terminal 151 may be configured to be connected to a positive terminal of the inverter 300 and the communication unit 110 .

[0064] For example, the second positive terminal 151 can be connected to the positive terminal of the inverter 300 via a power line. The second negative terminal 152 can be configured to be connected to the negative terminal of the inverter 300 and the first negative terminal 142. The second negative terminal 152 can be connected to the negative terminal of the inverter 300 via a power line.

[0065] For example, the first input / output port 140 and the second input / output port 150 may be implemented through one connector, or the first input / output port 140 and the second input / output port 150 may be implemented through respective connectors.

[0066] The connection unit 120 may be configured to connect the communication unit 110 to the second positive port 151. The connection unit 120 may electrically connect one end of the communication unit 110 to the second positive port 151 via a power line. In other words, the communication unit 110 and the second positive port 151 may be connected to each other via the connection unit 120.

[0067] The bypass unit 130 may be configured to connect the communication unit 110 to the first negative port 142. The bypass unit 130 may electrically connect one end of the communication unit 110 to the first negative port 142 via a power line. The bypass unit 130 may correspond to an alternative path for the connection unit 120. In other words, the first communication path connecting the communication unit 110 and the first negative port 142 via the bypass unit 130 may function as an alternative path to the second communication path connecting the communication unit 110 and the second positive port 151 via the connection unit 120.

[0068] Figure 8 is a diagram showing another example of the flow of a power line communication signal when an inverter is connected to a solar power generation system according to the embodiment.

[0069] refer to Figure 8, when the inverter 300 is normally connected to the solar power generation system, the power line communication signal can flow as shown by the arrow. In other words, when the inverter 300 is connected to the solar power generation system, the power line communication signal can be sent and received through the second communication path. For example, when the switch 400 connected to the inverter 300 is in the on state, the power line communication signal can flow through the power line communication path (i.e., the second communication path) formed in the following order: one of the positive and negative poles of the solar module array 200 (e.g., the positive pole) - the first positive port 141 - the communication unit 110 - the second positive port 151 - the inverter 300 - the second negative port 152 - the first negative port 142 - the other of the positive and negative poles of the solar module array 200 (e.g., the negative pole).

[0070] Figure 9 is a diagram illustrating another example of the flow of a power line communication signal when the inverter is disconnected from the solar power generation system according to the embodiment.

[0071] refer to Figure 9 , when the inverter 300 is disconnected from the solar power generation system, the power line communication signal can flow as shown by the arrow. In other words, when the inverter 300 is disconnected from the solar power generation system, the power line communication signal can be sent and received through the first communication path. For example, when the switch 400 connected to the inverter 300 is in the disconnected (OFF) state, the power line communication signal can flow through the power line communication path (i.e., the first communication path) formed in the following order: one of the positive and negative poles of the solar module array 200 (e.g., the positive pole) - the first positive pole port 141 - the communication unit 110 - the first negative pole port 142 - the other of the positive and negative poles of the solar module array 200 (e.g., the negative pole).

[0072] Figure 10 FIG. 1 is a diagram for explaining an example of supplying power to a building in which a solar module is installed according to an embodiment.

[0073] refer to Figure 10 , solar modules 2 can be installed on the roof of a building to generate electricity. The solar modules 2 can form at least one solar module array.

[0074] The inverter 6 may convert the electricity generated by the solar module 2 and supply the electricity to the building 1 .

[0075] In some embodiments, commercial power transmitted via utility poles 3 may be supplied to buildings via transformers 4 .

[0076] The plurality of home appliances 7 may operate by selectively receiving at least one of commercial power or power generated by the solar module 2. The power meter 5 may measure the amount of power consumed in the building 1.

[0077] In some embodiments, when a separate energy storage system (ESS) is installed in the building 1 , the electricity generated by the solar modules 2 can be stored in the ESS.

[0078] The solar modules 2 may form at least one solar module array. For example, the solar module array may include an output terminal.

[0079] In some embodiments, the solar module 2 may include MLPE.

[0080] For example, the MLPE device can monitor the status or power generation of the solar module 2 and transmit the data to an external device. In some embodiments, the MLPE can perform a rapid shutdown and stop the operation of the solar module according to the degree of failure of the solar module.

[0081] In some embodiments, at least one of the solar module 2 and the MLPE may include a communication module for power line communication.

[0082] As described above, according to this embodiment, even when the inverter 300 is disconnected from the solar power generation system, the module management device 100 still maintains the power line communication path with the solar module array 200, thereby enabling stable management of the plurality of module control devices 220 included in the solar module array 200 regardless of whether the inverter 300 is disconnected.

[0083] In some embodiments, according to this embodiment, even when the inverter 300 is disconnected from the solar power generation system, the module management device 100 maintains a power line communication path with the solar module array 200, thereby monitoring the module control device 220 while the inverter 300 is disconnected from the solar power generation system. Therefore, installation or maintenance work on the solar power generation system can be performed safely.

[0084] The implementations described in this specification may be implemented as, for example, methods or processes, devices, software programs, data streams, or signals. Even if discussed only in the context of a single implementation form (e.g., discussed only as a method), the implementation of the features discussed may also be implemented in other forms (e.g., as a device or program). The devices may be implemented using appropriate hardware, software, and firmware.

[0085] The present disclosure has been described with reference to the embodiments shown in the accompanying drawings, but these embodiments are exemplary only, and those skilled in the art will appreciate that various modifications and other equivalent embodiments are possible. Therefore, the scope of the present disclosure should be limited by the appended claims.

Claims

1. A device for managing solar modules, comprising: a communication unit for receiving a power line communication signal from at least one solar module array or sending the power line communication signal to the at least one solar module array; as well as A bypass unit forms a first communication path connecting the communication unit to the at least one solar module array, wherein the first communication path operates as an alternative to a second communication path connecting the communication unit to an inverter.

2. The device according to claim 1, wherein When the inverter is connected to the solar power generation system, the power line communication signal is transmitted and received via the second communication path, and when the inverter is disconnected from the solar power generation system, the power line communication signal is transmitted and received via the first communication path.

3. The device according to claim 2, wherein The second communication path is formed by connecting the following components in sequence: One of the positive pole and the negative pole of the at least one solar module array, the communication unit, the inverter, and the other of the positive pole and the negative pole of the at least one solar module array.

4. The device according to claim 2, wherein The first communication path is formed by connecting the following components in sequence: One of the positive pole and the negative pole of the at least one solar module array, the communication unit, the bypass unit, and the other of the positive pole and the negative pole of the at least one solar module array.

5. The apparatus according to claim 1, wherein The bypass unit comprises: An AC coupling capacitor allows the power line communication signal to pass.

6. The apparatus according to claim 1, wherein The communication unit includes: Power line communication modems; a coupling transformer that is connected to the power line communication modem and combines or disconnects the power line communication signal and the power signal from each other; and A coupling capacitor is connected to the coupling transformer and forms an LC filter.

7. The apparatus according to claim 1, wherein The solar module array comprises: a plurality of solar modules; and a plurality of module-level power electronics devices connected to the plurality of solar modules, The plurality of solar modules are respectively connected to corresponding module-level power electronic devices among the plurality of module-level power electronic devices.

8. The apparatus according to claim 7, wherein Each of the plurality of module-level power electronic devices comprises: Optimizer or microinverter.

9. An apparatus for managing solar modules, comprising: a communication unit for receiving a power line communication signal from at least one solar module array or sending the power line communication signal to the at least one solar module array; at least one first input / output port, comprising: a first positive port connected to the at least one solar module array and the communication unit, and a first negative port connected to the at least one solar module array and an inverter; at least one second input / output port, including: a second positive port connected to the communication unit and the inverter, and a second negative port connected to the inverter and the first negative port; and at least one bypass unit, the at least one bypass unit forming a first communication path connecting the communication unit and the first negative port, The first communication path operates as an alternative to a second communication path connecting the communication unit to the second positive port.

10. The apparatus according to claim 9, wherein When the inverter is connected to the solar power generation system, the power line communication signal is transmitted and received via the second communication path, and when the inverter is disconnected from the solar power generation system, the power line communication signal is transmitted and received via the first communication path.

11. The apparatus according to claim 10, wherein The second communication path is formed by connecting the following components in sequence: One of the positive pole and the negative pole of the at least one solar module array, the first positive port, the communication unit, the second positive port, the inverter, the second negative port, the first negative port, and the other of the positive pole and the negative pole of the at least one solar module array.

12. The apparatus according to claim 10, wherein The first communication path is formed by connecting the following components in sequence: One of the positive pole and the negative pole of the at least one solar module array, the first positive port, the communication unit, the bypass unit, the first negative port, and the other of the positive pole and the negative pole of the at least one solar module array.

13. The apparatus according to claim 9, wherein The bypass unit comprises: An AC coupling capacitor allows the power line communication signal to pass.

14. The apparatus according to claim 9, wherein The communication unit includes: Power line communication modems; a coupling transformer that is connected to the power line communication modem and combines or disconnects the power line communication signal and the power signal from each other; and A coupling capacitor is connected to the coupling transformer and forms an LC filter.

15. The apparatus according to claim 9, wherein The solar module array comprises: a plurality of solar modules; and a plurality of module-level power electronics devices connected to the plurality of solar modules, The plurality of solar modules are respectively connected to corresponding module-level power electronic devices among the plurality of module-level power electronic devices.

16. The apparatus according to claim 15, wherein Each of the plurality of module-level power electronic devices comprises: Optimizer or microinverter.

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