Marine photovoltaic inverter and marine photovoltaic power distribution system
The marine photovoltaic inverter with integrated photovoltaic interface solves the problem of large space occupation and complicated use of split photovoltaic inverter, and achieves the effect of plug-and-play and simplified operation.
Patent Information
- Application Number
- CN202422507348.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-16
- Publication Date
- 2025-09-09
- Estimated Expiration
- 2034-10-16
AI Technical Summary
In the existing technology, split photovoltaic inverters need to occupy more ship space and users need to have high design or construction requirements. The integration of decentralized modules leads to complex wiring requirements.
Provided is a marine photovoltaic inverter that integrates a photovoltaic interface, a DC interface, an AC input interface, and an AC output interface, supports plug-and-play, and simplifies wiring and construction.
It reduces the space occupied by the ship, simplifies the user operation, reduces the installation complexity and cost, and improves the convenience of use.
Smart Images
Figure CN223322048U_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to the field of marine photovoltaic technology, and in particular to a marine photovoltaic inverter and a marine photovoltaic power distribution system. Background Art
[0002] In a hybrid energy system that uses green new energy sources such as solar energy and fuel cells as the main energy source for ships, configuring a DC microgrid is the best networking method, especially when the ship's electrical load includes AC and DC loads, and the DC load accounts for a large proportion. Because the DC microgrid is the simplest in the process from power generation to energy consumption, and the energy conversion is the least, it has higher energy efficiency and less loss.
[0003] Within a DC microgrid architecture, deploying a solar power generation system for photovoltaic conversion, energy storage, and utilization requires a photovoltaic inverter. Conventional photovoltaic inverters typically utilize split-type designs, which add significant weight. Furthermore, split-type inverters are integrated from various discrete modules, requiring additional wiring and installation. This requires specialized integration and wiring expertise, placing higher design and construction requirements on the user. Utility Model Content
[0004] In order to solve the above technical problems or at least partially solve the above technical problems, the present disclosure provides a marine photovoltaic inverter and a marine photovoltaic power distribution system, which can avoid the problem in the related art that split photovoltaic inverters are integrated from different discrete modules and need to occupy a larger ship space, and are convenient for users to use.
[0005] In a first aspect, an embodiment of the present disclosure provides a marine photovoltaic inverter, wherein the marine photovoltaic inverter is provided with a photovoltaic interface, a DC interface, an AC input interface, and an AC output interface, wherein the photovoltaic interface is used for pluggable connection to a photovoltaic component, the DC interface is used for pluggable connection to a DC grid or a DC energy storage module, the AC input interface is used for pluggable connection to shore power or a generator, and the AC output interface is used for pluggable connection to an AC distribution board.
[0006] In some embodiments, the marine photovoltaic inverter includes a plurality of photovoltaic interfaces; the plurality of photovoltaic interfaces are connected to the plurality of photovoltaic assemblies in a one-to-one correspondence.
[0007] In some embodiments, the marine photovoltaic inverter includes a DC-DC module and a DC-AC module;
[0008] The DC-DC module is connected to the photovoltaic interface and the DC interface, and is used to output the DC power of the photovoltaic component to the DC grid or the DC energy storage module; one end of the DC-AC module is connected to the photovoltaic interface, and the other end is connected to the AC output interface, and is used to convert the DC power of the photovoltaic component into AC power and output it to the AC distribution board.
[0009] In some embodiments, one end of the DC-AC module is further connected to the DC interface for converting the DC power of the DC grid or the DC energy storage module into AC power and outputting it to the AC distribution board.
[0010] In some embodiments, the marine photovoltaic inverter further includes an AC-DC module, which is connected to the AC power input interface and the DC power interface and is used to convert the AC power of the shore power or the generator into DC power and output it to the DC grid or the DC energy storage module.
[0011] In some embodiments, the marine photovoltaic inverter further includes an AC-AC module, which is connected to the AC power input interface and the AC power output interface and is used to output the AC power of the shore power or the generator to the AC distribution board.
[0012] In a second aspect, the present disclosure further provides a ship-borne photovoltaic power distribution system, comprising the ship-borne photovoltaic inverter as described in the first aspect, and comprising photovoltaic components and an AC distribution board, wherein the photovoltaic components are connected to the photovoltaic interface, the AC distribution board is connected to the AC power output interface, and the AC distribution board is used to connect to a ship-borne load.
[0013] In some embodiments, the ship photovoltaic power distribution system further includes a DC grid and an electric ship propeller, the DC power interface is connected to the DC grid, and the DC grid is connected to the electric ship propeller.
[0014] In some embodiments, the marine photovoltaic power distribution system further includes a DC energy storage module, which is connected to the DC power interface.
[0015] In some embodiments, the ship-mounted photovoltaic power distribution system further includes a DC energy storage module, and the DC power grid is connected to the DC energy storage module.
[0016] In some embodiments, the DC grid is provided with two DC buses, the ship photovoltaic power distribution system includes two ship photovoltaic inverters and two electric ship propellers, the DC power interfaces of the two ship photovoltaic inverters are respectively connected to the two DC buses, the two DC buses are connected via a switch unit, and the two ship propellers are respectively connected to the two DC buses.
[0017] In some embodiments, the marine photovoltaic power distribution system further includes shore power or a generator, and the AC power input interface is connected to the shore power or the generator.
[0018] In some embodiments, the marine photovoltaic power distribution system further includes a main control module and a human-computer interaction module, and the main control module is communicatively connected to the human-computer interaction module and the marine photovoltaic inverter respectively.
[0019] In some embodiments, the marine photovoltaic power distribution system further comprises: a wake-up device, the wake-up device being electrically connected to the main control module and the marine photovoltaic inverter respectively;
[0020] The main control module is used to control the marine photovoltaic inverter to be in an awake state through the awakening device.
[0021] In some embodiments, the wake-up device includes a relay; the photovoltaic inverter includes a wake-up circuit, the relay is connected to the wake-up circuit, the human-computer interaction module sends a wake-up instruction to the main control module, and the main control module controls the relay to close based on the wake-up instruction to turn on the wake-up circuit, so that the marine photovoltaic inverter is in a wake-up state.
[0022] In some embodiments, the marine photovoltaic inverter is provided with a controller, which is connected to the photovoltaic interface, DC interface, AC input interface and AC output interface, and is used to manage and control the current conversion of the photovoltaic components, AC distribution board, DC grid and DC energy storage module. The controller also communicates with the main control module to feedback the energy status to the human-computer interaction module via the main control module, and receives energy control instructions from the human-computer interaction module via the main control module.
[0023] In some embodiments, the marine photovoltaic power distribution system further includes an electric marine propeller and a DC energy storage module, the electric marine propeller is provided with a central controller, the DC energy storage module is provided with a power manager, and the main control module is communicatively connected to the central controller and to the power manager.
[0024] In some embodiments, the human-computer interaction module is communicatively connected to the central controller via the main control module to control the operation of the electric marine propeller and receive the operating status of the electric marine propeller; the human-computer interaction module is connected to the DC energy storage module via the main control module to control the charging and discharging of the DC energy storage module and receive the charging and discharging status of the DC energy storage module.
[0025] In some embodiments, the ship photovoltaic power distribution system includes two ship photovoltaic inverters, the DC power grid is provided with a DC bus, the DC power interfaces of the two ship photovoltaic inverters are connected to the DC bus, and the AC power output interfaces of the two photovoltaic inverters are connected to the same AC distribution board.
[0026] In some embodiments, the ship photovoltaic power distribution system includes two ship photovoltaic inverters, and also includes an electric ship propeller and two DC energy storage modules. The DC power grid is provided with a DC bus, and the DC interface of one ship photovoltaic inverter is connected to the DC bus, and the DC interface of another ship photovoltaic inverter is connected to one of the DC energy storage modules. The DC bus is connected to the other DC energy storage module and the electric ship propeller, and the AC output interfaces of the two ship photovoltaic inverters are connected to the same AC distribution board.
[0027] The technical solution provided by the embodiments of the present disclosure has the following advantages over the prior art:
[0028] The marine photovoltaic inverter provided by the embodiment of the present disclosure is provided with a photovoltaic interface, a DC interface, an AC input interface and an AC output interface. The photovoltaic interface is used for pluggable connection with the photovoltaic component, the DC interface is used for pluggable connection with the DC grid or DC energy storage module, the AC input interface is used for pluggable connection with the shore power or generator, and the AC output interface is used for pluggable connection with the AC distribution board. By setting the marine photovoltaic inverter to include a photovoltaic interface, a DC interface, an AC input interface and an AC output interface, when using the marine photovoltaic inverter, the various interfaces provided on the marine photovoltaic inverter can be directly plugged into the corresponding components in the marine photovoltaic distribution system, that is, plug and play can be achieved when in use. Therefore, the embodiment of the present disclosure avoids the problem in the related art that the split photovoltaic inverter is integrated from different dispersed modules and needs to occupy a larger ship space, and is convenient for users to use. BRIEF DESCRIPTION OF THE DRAWINGS
[0029] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.
[0030] In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.
[0031] Figure 1A schematic structural diagram of a marine photovoltaic power distribution system provided in an embodiment of the present disclosure;
[0032] Figure 2 A schematic structural diagram of another marine photovoltaic power distribution system provided by an embodiment of the present disclosure;
[0033] Figure 3 A schematic structural diagram of a marine photovoltaic inverter provided by an embodiment of the present disclosure;
[0034] Figure 4 A schematic structural diagram of another marine photovoltaic power distribution system provided in an embodiment of the present disclosure;
[0035] Figure 5 A schematic structural diagram of another marine photovoltaic power distribution system provided in an embodiment of the present disclosure;
[0036] Figure 6 A schematic structural diagram of another marine photovoltaic power distribution system provided in an embodiment of the present disclosure;
[0037] Figure 7 A schematic diagram of an application scenario of a marine photovoltaic power distribution system provided by an embodiment of the present disclosure;
[0038] Figure 8 A schematic structural diagram of another marine photovoltaic power distribution system provided in an embodiment of the present disclosure;
[0039] Figure 9 A schematic structural diagram of another marine photovoltaic power distribution system provided in an embodiment of the present disclosure;
[0040] Figure 10 A schematic structural diagram of another marine photovoltaic power distribution system provided in an embodiment of the present disclosure;
[0041] Figure 11 A schematic structural diagram of another marine photovoltaic power distribution system provided in an embodiment of the present disclosure;
[0042] Figure 12 A schematic structural diagram of another marine photovoltaic power distribution system provided in an embodiment of the present disclosure;
[0043] Figure 13 A schematic structural diagram of another marine photovoltaic power distribution system provided in an embodiment of the present disclosure. DETAILED DESCRIPTION
[0044] In order to more clearly understand the above-mentioned objectives, features and advantages of the present disclosure, the scheme of the present disclosure will be further described below. It should be noted that the embodiments of the present disclosure and the features therein can be combined with each other in the absence of conflict.
[0045] In the following description, many specific details are set forth to facilitate a full understanding of the present disclosure, but the present disclosure may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present disclosure, rather than all of the embodiments.
[0046] Figure 1 This is a structural diagram of a marine photovoltaic power distribution system provided by an embodiment of the present disclosure. Figure 2 This is a structural diagram of another marine photovoltaic power distribution system provided by an embodiment of the present disclosure. Figure 1 and Figure 2 As shown, the marine photovoltaic power distribution system includes a marine photovoltaic inverter 21, which is provided with a photovoltaic interface M, a DC interface B, an AC input interface G and an AC output interface E. The photovoltaic interface M is used for pluggable connection with the photovoltaic module 22, and the DC interface B is used for connecting to the DC grid 231 (such as Figure 1 As shown) or DC energy storage module 23 (as shown Figure 2 As shown), the AC input interface G is used for pluggable connection with shore power or generator 25, and the AC output interface E is used for pluggable connection with the AC distribution board 24.
[0047] Specifically, by configuring the marine photovoltaic inverter 21 to include a photovoltaic interface M, a DC interface B, an AC input interface G, and an AC output interface E, the marine photovoltaic inverter 21 can be used by simply plugging the interfaces provided on the marine photovoltaic inverter 21 into corresponding components in the marine photovoltaic power distribution system, achieving plug-and-play operation. Thus, the disclosed embodiments avoid the problem of related art split-type photovoltaic inverters requiring more space on board due to the integration of different discrete modules, thereby facilitating user convenience.
[0048] In some embodiments, Figure 3 This is a structural diagram of a marine photovoltaic inverter provided by an embodiment of the present disclosure. Figure 3 As shown, the marine photovoltaic inverter 21 may include a plurality of photovoltaic interfaces M; the plurality of photovoltaic interfaces M are connected to the plurality of photovoltaic modules 22 in a one-to-one correspondence.
[0049] Therefore, the marine photovoltaic inverter 21 is integrated with a plurality of photovoltaic interfaces M, and each photovoltaic interface M can be connected to a photovoltaic component 22 such as a solar panel to achieve more photovoltaic energy conversion.
[0050] Figure 3 The figure only exemplarily shows that two photovoltaic interfaces M are provided in the marine photovoltaic inverter 21. The embodiment of the present disclosure does not specifically limit this. The number of photovoltaic interfaces M can be set according to actual needs.
[0051] It should be noted that when the marine photovoltaic inverter 21 is connected to multiple photovoltaic modules 22, the difference in voltage generated by each photovoltaic module 22 is relatively small.
[0052] In some embodiments, reference Figure 1 and Figure 2 The marine photovoltaic inverter 21 includes a DC-DC module 26 and a DC-AC module 27; the DC-DC module 26 is connected to the photovoltaic interface M and the DC interface B, and is used to output the DC power of the photovoltaic component 22 to the DC grid 231 or the DC energy storage module 23; one end of the DC-AC module 27 is connected to the photovoltaic interface M, and the other end is connected to the AC output interface E, and is used to convert the DC power of the photovoltaic component 22 into AC power and output it to the AC distribution board 24.
[0053] Specifically, the DC-DC module 26 is connected to the photovoltaic interface M and the DC interface B respectively. The DC-DC module 26 can convert the DC voltage received from the photovoltaic interface M into the DC voltage required by the DC grid 231 or the DC energy storage module 23, and transmit it to the DC grid 231 or the DC energy storage module 23 through the DC interface B.
[0054] Specifically, the DC-AC module 27 is connected to the photovoltaic interface M and the AC output interface E respectively. The DC-AC module 27 can convert the DC voltage received from the photovoltaic interface M into AC voltage, and transmit it to the AC distribution board 24 through the AC output interface E, and then power the ship load through the AC distribution board 24.
[0055] In some embodiments, continue to refer to Figure 1 or Figure 2 One end of the DC-AC module 27 is also connected to the DC interface B, which is used to convert the DC power of the DC grid 231 or the DC energy storage module 23 into AC power and output it to the AC distribution board 24.
[0056] Therefore, when there is no sunlight or insufficient sunlight, that is, when solar energy is insufficient, the DC grid 231 or the DC energy storage module 23 can be used to power the AC distribution board 24, and then power the ship loads through the AC distribution board 24.
[0057] In some embodiments, continue to refer to Figure 1 or Figure 2 The marine photovoltaic inverter 21 also includes an AC-DC module 28, which is connected to the AC input interface G and the DC interface B, and is used to convert the AC power of the shore power or the generator 25 into DC power and output it to the DC grid 231 or the DC energy storage module 23.
[0058] Therefore, by providing the marine photovoltaic inverter 21 including the AC-DC module 28 , it is possible to utilize shore power or the generator 25 to transmit electric energy to the DC grid 231 or the DC energy storage module 23 , thereby enabling the DC energy storage module 23 to store energy.
[0059] In some embodiments, the marine photovoltaic inverter 21 further includes an AC-AC module 29 , which is connected to the AC power input interface G and the AC power output interface E, and is used to output the AC power of the shore power or the generator 25 to the AC distribution board 24 .
[0060] Therefore, by providing the marine photovoltaic inverter 21 including the AC-AC module 29 , shore power or the generator 25 can be used to supply power to the AC distribution board 24 , thereby supplying power to the marine loads through the AC distribution board 24 .
[0061] In some embodiments, continuing as Figure 1 or Figure 2 As shown, the marine photovoltaic power distribution system includes a marine photovoltaic inverter 21, a photovoltaic module 22, and an AC distribution board 24. The photovoltaic module 22 is connected to the photovoltaic interface M, the AC distribution board 24 is connected to the AC output interface E, and the AC distribution board 24 is used to connect to the marine load 30.
[0062] In some embodiments, Figure 4 This is a structural diagram of another marine photovoltaic power distribution system provided by the embodiment of the present disclosure. Figure 4 As shown, the marine photovoltaic power distribution system further includes a DC grid 231 and an electric marine propeller 31 , the DC interface B is connected to the DC grid 231 , and the DC grid 231 is connected to the electric marine propeller 31 .
[0063] In this way, the direct current output by the marine photovoltaic inverter 21 can be used to supply power to the electric marine propeller 31 through the direct current grid 231 .
[0064] In some embodiments, as Figure 1 As shown, the marine photovoltaic power distribution system further includes a DC energy storage module 23, which is connected to the DC power interface B.
[0065] In this way, the direct current output by the marine photovoltaic inverter 21 can be directly input into the direct current energy storage module 23 to achieve energy storage.
[0066] In some embodiments, Figure 5 This is a structural diagram of another marine photovoltaic power distribution system provided by the embodiment of the present disclosure. Figure 5As shown, the marine photovoltaic power distribution system further includes a DC energy storage module 23, and a DC grid 231 is connected to the DC energy storage module 23. Thus, the DC power output by the marine photovoltaic inverter 21 can be input into the DC grid 231, and the power on the DC grid 231 can be input into the DC energy storage module 23 for energy storage.
[0067] In some embodiments, Figure 6 This is a structural diagram of another marine photovoltaic power distribution system provided by the embodiment of the present disclosure. Figure 6 As shown, the DC grid 231 is provided with two DC buses 023, the ship photovoltaic power distribution system includes two ship photovoltaic inverters 21 and two electric ship propellers 31, the DC power interfaces B of the two ship photovoltaic inverters 21 are respectively connected to the two DC buses, the two DC buses are connected via a switch unit 32, and the two electric ship propellers 31 are respectively connected to the two DC buses.
[0068] For example, Figure 7 This is a schematic diagram of an application scenario of a marine photovoltaic power distribution system provided by an embodiment of the present disclosure. Figure 6 and 7 As shown, the shipboard photovoltaic power distribution system is provided with two sections of DC busbars 023, which are respectively connected to two shipboard photovoltaic inverters 21. The DC busbars 023 are connected to energy modules such as a DC energy storage module 23 (including a battery 02 and a fuel cell 01), a wind power generation module 210, and load modules such as an electric ship propeller 31. The AC output interface E of the shipboard photovoltaic inverter 21 is connected to the AC distribution board 24, which is used to connect daily loads, i.e., shipboard loads, such as kitchen appliances. Among them, photovoltaic modules 22, such as high-voltage photovoltaic panels, can be arranged on the top of the ship's side. The high-voltage photovoltaic panels generate a DC voltage of 150V to 1000V, which is converted by the shipboard photovoltaic inverter 21.
[0069] Specifically, when the marine photovoltaic inverter 21 is operating, the electrical energy generated by photoelectric conversion is used in the following order: the generated energy from the photovoltaic modules 22 is first used to power the marine loads 30, then flows to the DC energy storage module 23 or the electric marine propulsion system 31, and then the excess energy flows to shore power (if available). When the marine loads 30 require power, the priority order of power sources is: power generated by the photovoltaic modules 22, shore power or generator 25, and then the DC energy storage module 23. When solar energy levels are too low to ensure power supply to the marine loads 30, the DC energy storage module 23 can provide power to the marine loads 30.
[0070] The working modes of the marine photovoltaic inverter 21 include:
[0071] Off-grid mode: The marine photovoltaic inverter 21 will only supply power to the loads connected to it. In this case, even if it is connected to shore power, it will not feed power back to the shore power.
[0072] Forced charging mode: the DC energy storage module 23 can be charged by connecting to shore power.
[0073] Passive switching mode: If the shore power is unstable or outage occurs, the marine photovoltaic inverter 21 will automatically disconnect from the shore power, which is called islanding. The conversion time from grid-connected to off-grid mode is generally less than 30ms.
[0074] In some embodiments, continuing as Figure 1 or Figure 2 As shown, the marine photovoltaic power distribution system further includes shore power or a generator 25 , and the AC power input interface G is connected to the shore power or the generator 25 .
[0075] In some embodiments, Figure 8 This is a structural diagram of another marine photovoltaic power distribution system provided by the embodiment of the present disclosure. Figure 8 As shown, the marine photovoltaic power distribution system further includes a main control module 33 and a human-machine interaction module 34 . The main control module 33 is communicatively connected to the human-machine interaction module 34 and the photovoltaic inverter 21 , respectively.
[0076] The main control module 33 can communicate and interact with the marine photovoltaic inverter 21. The human-computer interaction module 34 is provided with a user interface, such as, but not limited to, a display screen. The user can input operating instructions to the main control module 33 through the user interface, and the main control module 33 then transmits the operating instructions to the marine photovoltaic inverter 21. This enables interaction between the human-computer interaction module 34 and the marine photovoltaic inverter 21.
[0077] In some embodiments, Figure 9 This is a structural diagram of another marine photovoltaic power distribution system provided by the embodiment of the present disclosure. Figure 1 and Figure 9 The photovoltaic inverter 21 is provided with a controller 35, which is connected to the photovoltaic interface M, the DC interface B, the AC input interface G and the AC output interface E. The controller 35 is used to manage and control the current conversion of the photovoltaic module 22, the AC distribution board 24, the DC grid 231, and the DC energy storage module 23. The controller 35 also communicates with the main control module 33 to feedback the energy status to the human-computer interaction module 34 via the main control module 33, and receives energy control instructions from the human-computer interaction module 34 via the main control module 33.
[0078] Specifically, the marine photovoltaic inverter 21 is internally provided with a controller 35. The controller 35 monitors and manages the photovoltaic interface M, the DC interface B, the AC input interface G, and the AC output interface E. Users can enter energy control instructions, such as setting a charging speed, on the human-computer interaction module 34. These instructions are then transmitted to the controller 35 of the photovoltaic inverter 21 via the main control module 33. For example, when charging the DC energy storage module 23, the charging of the DC energy storage module 23 can be managed based on the indicated charging speed.
[0079] In some embodiments, Figure 10 This is a structural diagram of another marine photovoltaic power distribution system provided by the embodiment of the present disclosure. Figure 10 As shown, the marine photovoltaic power distribution system also includes an electric marine propeller 31 and a DC energy storage module 23. The electric marine propeller 31 is provided with a central controller 311, and the DC energy storage module 23 is provided with a power manager 230. The main control module 33 is communicatively connected to the central controller 311 and to the power manager 230.
[0080] The central controller 311 is responsible for managing the electric marine propulsion unit 31 and exchanging information with the main control module 33. The power manager 230 is responsible for managing the DC energy storage module 23 and exchanging information with the main control module 33.
[0081] Among them, the human-computer interaction module 34 is communicated with the central controller 35 via the main control module 33 to control the operation of the electric marine propeller 31 and receive the operating status of the electric marine propeller 31; the human-computer interaction module 34 is connected to the DC energy storage module 23 via the main control module 33 to control the charging and discharging of the DC energy storage module 23 and receive the charging and discharging status of the DC energy storage module 23.
[0082] The marine photovoltaic inverter 21 is connected to the main control module 33 via a CAN communication line and an RS485 communication line. Because the DC energy storage module 23 communicates using CAN 2.0B, while the marine photovoltaic inverter 21 uses CAN 2.0A, the marine photovoltaic inverter 21 cannot communicate directly with the DC energy storage module 23. Therefore, the marine photovoltaic inverter 21 needs to receive data from the DC energy storage module 23 via the CAN communication line to read the relevant parameters of the DC energy storage module 23. The marine photovoltaic inverter 21 also interacts with the main control module 33 via the RS485 communication line. This interaction is not limited to reading parameter information and fault alarm information from the marine photovoltaic inverter 21, but also allows write control of the marine photovoltaic inverter 21, such as controlling the remote power on and off of the marine photovoltaic inverter 21 and setting the address of the marine photovoltaic inverter 21.
[0083] In some embodiments, Figure 11This is a structural diagram of another marine photovoltaic power distribution system provided by the embodiment of the present disclosure. Figure 11 As shown, the marine photovoltaic power distribution system further includes: a wake-up device 36 , which is electrically connected to the main control module 33 and the photovoltaic inverter 21 ; the main control module 33 is used to control the photovoltaic inverter 21 to be in a wake-up state through the wake-up device 36 .
[0084] Among them, the wake-up device 36 includes a relay 361; the marine photovoltaic inverter 21 includes a wake-up circuit, the relay 361 is connected to the wake-up circuit (including wake+ and wake-), the human-computer interaction module 34 sends a wake-up instruction to the main control module 33, and the main control module 33 controls the relay 361 to close based on the wake-up instruction to turn on the wake-up circuit, so that the marine photovoltaic inverter 21 is in a wake-up state.
[0085] Therefore, the user can remotely wake up the marine photovoltaic inverter 21 without entering a small cabin to start the marine photovoltaic inverter 21, which greatly facilitates the user's operation.
[0086] In some embodiments, Figure 12 This is a structural diagram of another marine photovoltaic power distribution system provided by the embodiment of the present disclosure. Figure 12 As shown, the shipboard photovoltaic power distribution system includes two shipboard photovoltaic inverters 21, a DC grid 231 is provided with a DC bus 023, the DC power interfaces B of the two shipboard photovoltaic inverters 21 are connected to the DC bus 023, and the AC power output interfaces E of the two photovoltaic inverters 21 are connected to the same AC distribution board 24.
[0087] In some embodiments, Figure 13 This is a structural diagram of another marine photovoltaic power distribution system provided by the embodiment of the present disclosure. Figure 13 As shown, the ship photovoltaic power distribution system includes two ship photovoltaic inverters 21, and also includes an electric ship propeller 31 and two DC energy storage modules 23. The DC grid 231 is provided with a DC bus 023. The DC interface B of one ship photovoltaic inverter 21 is connected to the DC bus 023, and the DC interface B of the other ship photovoltaic inverter 21 is connected to one of the DC energy storage modules 23. The DC bus 023 is connected to the other DC energy storage module 23 and the electric ship propeller 31. The AC output interfaces E of the two ship photovoltaic inverters 21 are connected to the same AC distribution board 24.
[0088] Specifically, Figure 12 and Figure 13 By setting up two sets of marine photovoltaic inverters 21, the AC output interfaces E of the two sets of marine photovoltaic inverters 21 are connected to the same AC distribution board 24, and when facing loads of larger specifications or capacities, the function of parallel connection and capacity expansion can be achieved.
[0089] Therefore, the disclosed embodiments utilize an integrated marine photovoltaic inverter. Compared to split-type marine photovoltaic inverters, the integrated marine photovoltaic inverter requires less space and is lighter overall. For yachts, where space and weight are critical, using an integrated marine photovoltaic inverter in a marine DC microgrid can address space bottlenecks, making installation easier and reducing the weight of the entire marine DC microgrid.
[0090] Furthermore, the marine photovoltaic inverter features an integrated design, enabling plug-and-play operation. Compared to separate marine photovoltaic inverters, wiring and installation are simpler, saving installation time and costs. Users can also remotely activate the marine photovoltaic inverter, eliminating the need to enter a cramped cabin to start it, greatly facilitating operation.
[0091] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device that includes the element.
[0092] The above are merely specific embodiments of the present disclosure, intended to enable those skilled in the art to understand and implement the present disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure is not limited to these embodiments, but is to be construed in the broadest manner consistent with the principles and novel features disclosed herein.
Claims
1. A marine photovoltaic inverter, characterized in that: The marine photovoltaic inverter is provided with a photovoltaic interface, a DC interface, an AC input interface and an AC output interface. The photovoltaic interface is used for pluggable connection with the photovoltaic module, the DC interface is used for pluggable connection with the DC grid or DC energy storage module, the AC input interface is used for pluggable connection with shore power or a generator, and the AC output interface is used for pluggable connection with the AC distribution board.
2. The marine photovoltaic inverter according to claim 1, characterized in that: The marine photovoltaic inverter includes a plurality of photovoltaic interfaces; the plurality of photovoltaic interfaces are connected to the plurality of photovoltaic modules in a one-to-one correspondence.
3. The marine photovoltaic inverter according to claim 1, characterized in that: The marine photovoltaic inverter includes a DC-DC module and a DC-AC module; The DC-DC module is connected to the photovoltaic interface and the DC interface, and is used to output the DC power of the photovoltaic component to the DC grid or the DC energy storage module; one end of the DC-AC module is connected to the photovoltaic interface, and the other end is connected to the AC output interface, and is used to convert the DC power of the photovoltaic component into AC power and output it to the AC distribution board.
4. The marine photovoltaic inverter according to claim 3, characterized in that: One end of the DC-AC module is also connected to the DC interface, which is used to convert the DC power of the DC grid or the DC energy storage module into AC power and output it to the AC distribution board.
5. The marine photovoltaic inverter according to claim 3, characterized in that: The marine photovoltaic inverter further includes an AC-DC module, which is connected to the AC power input interface and the DC power interface and is used to convert the AC power of the shore power or the generator into DC power and output it to the DC grid or the DC energy storage module.
6. The marine photovoltaic inverter according to claim 3, characterized in that: The marine photovoltaic inverter further includes an AC-AC module, which is connected to the AC power input interface and the AC power output interface and is used to output the AC power of the shore power or the generator to the AC distribution board.
7. A marine photovoltaic power distribution system, characterized in that: The invention comprises the marine photovoltaic inverter according to any one of claims 1 to 6, and comprises a photovoltaic module and an AC distribution board, wherein the photovoltaic module is connected to the photovoltaic interface, the AC distribution board is connected to the AC output interface, and the AC distribution board is used to be connected to a marine load.
8. The marine photovoltaic power distribution system according to claim 7, characterized in that: The marine photovoltaic power distribution system further includes a DC grid and an electric marine propeller. The DC power interface is connected to the DC grid, and the DC grid is connected to the electric marine propeller.
9. The marine photovoltaic power distribution system according to claim 7, characterized in that: The marine photovoltaic power distribution system further includes a DC energy storage module, which is connected to the DC power interface.
10. The marine photovoltaic power distribution system according to claim 8, characterized in that: The marine photovoltaic power distribution system further includes a DC energy storage module, and the DC power grid is connected to the DC energy storage module.
11. The marine photovoltaic power distribution system according to claim 8, characterized in that: The DC grid is provided with two DC busbars, the marine photovoltaic power distribution system includes two marine photovoltaic inverters and two electric marine propellers, the DC power interfaces of the two marine photovoltaic inverters are respectively connected to the two DC busbars, the two DC busbars are connected via a switch unit, and the two marine propellers are respectively connected to the two DC busbars.
12. The marine photovoltaic power distribution system according to claim 7, characterized in that: The marine photovoltaic power distribution system further includes shore power or a generator, and the AC power input interface is connected to the shore power or the generator.
13. The marine photovoltaic power distribution system according to claim 7, characterized in that: The marine photovoltaic power distribution system further comprises a main control module and a human-computer interaction module, wherein the main control module is communicatively connected to the human-computer interaction module and the marine photovoltaic inverter respectively.
14. The marine photovoltaic power distribution system according to claim 13, characterized in that: The marine photovoltaic power distribution system further includes: a wake-up device, the wake-up device being electrically connected to the main control module and the marine photovoltaic inverter respectively; The main control module is used to control the marine photovoltaic inverter to be in an awake state through the awakening device.
15. The marine photovoltaic power distribution system according to claim 14, characterized in that: The wake-up device includes a relay; The photovoltaic inverter includes a wake-up circuit, the relay is connected to the wake-up circuit, the human-computer interaction module sends a wake-up instruction to the main control module, and the main control module controls the relay to close based on the wake-up instruction to turn on the wake-up circuit, so that the marine photovoltaic inverter is in a wake-up state.
16. The marine photovoltaic power distribution system according to claim 13, characterized in that: The marine photovoltaic inverter is provided with a controller, which is connected to the photovoltaic interface, DC interface, AC input interface and AC output interface, and is used to manage and control the current conversion of the photovoltaic components, AC distribution board, DC grid and DC energy storage module. The controller also communicates with the main control module to feedback the energy status to the human-computer interaction module via the main control module, and receives energy control instructions from the human-computer interaction module via the main control module.
17. The marine photovoltaic power distribution system according to claim 13, characterized in that: The marine photovoltaic power distribution system also includes an electric marine propeller and a DC energy storage module. The electric marine propeller is provided with a central controller, and the DC energy storage module is provided with a power manager. The main control module is communicatively connected to the central controller and to the power manager.
18. The marine photovoltaic power distribution system according to claim 17, characterized in that: The human-computer interaction module is communicatively connected to the central controller via the main control module to control the operation of the electric marine propeller and receive the operating status of the electric marine propeller; the human-computer interaction module is connected to the DC energy storage module via the main control module to control the charging and discharging of the DC energy storage module and receive the charging and discharging status of the DC energy storage module.
19. The marine photovoltaic power distribution system according to claim 7, characterized in that: The ship-borne photovoltaic power distribution system includes two ship-borne photovoltaic inverters, the DC power grid is provided with a DC bus, the DC power interfaces of the two ship-borne photovoltaic inverters are connected to the DC bus, and the AC power output interfaces of the two photovoltaic inverters are connected to the same AC distribution board.
20. The marine photovoltaic power distribution system according to claim 7, characterized in that: The ship photovoltaic power distribution system includes two ship photovoltaic inverters, an electric ship propeller and two DC energy storage modules. The DC grid is provided with a DC bus. The DC power interface of one ship photovoltaic inverter is connected to the DC bus, and the DC power interface of another ship photovoltaic inverter is connected to one of the DC energy storage modules. The DC bus is connected to the other DC energy storage module and the electric ship propeller. The AC output interfaces of the two ship photovoltaic inverters are connected to the same AC distribution board.