Power router, control method thereof, and base station

Abstract

The present invention discloses an electric energy router, a control method thereof, and a base station, and belongs to the technical field of electric power equipment. The electric energy router includes: an energy management module and multiple power conversion modules. The multiple power conversion modules correspond to the multiple power supply settings in the base station respectively; the power conversion module is connected between the power supply and the DC bus in the base station; the DC bus is used to supply power to each load in the base station; wherein, a PID controller is provided in each power conversion module; the energy management module includes multiple fuzzy controllers, and each fuzzy controller is respectively connected to each PID controller; the energy management module is used to perform fuzzy PID control on the output power of each power conversion module through each fuzzy controller and each PID controller according to the total power demand of each load. The embodiment of the present invention uses the electric energy router as a power conversion and energy management device in the base station to achieve matching operation of the power supply and the load in the base station.

Description

Technical Field

[0001] The present invention relates to the technical field of power equipment, and in particular to a power router, a control method thereof, and a base station. Background Art

[0002] Currently, base stations powered solely by mains electricity have high electricity costs and are susceptible to power outages. With the continuous development of new energy technologies, the cost of generating electricity from photovoltaic and wind power continues to decrease, and the price of energy storage batteries continues to fall, making it possible to use wind, solar, and energy storage as a key component of base station power. However, if a base station is connected to multiple power sources, different types of power sources, as well as the same type of power source at different times, may have different power supply capabilities. Furthermore, on the load side, the load's power demand also changes dynamically. Currently, base stations lack energy management systems to coordinate the operation of multiple power sources and loads, making it difficult to achieve a matching operation between power sources and loads. Summary of the Invention

[0003] The present invention provides a power router and a control method thereof, and a base station. The power router is used as a power conversion and energy management device in the base station to achieve matching operation between the power supply and the load in the base station.

[0004] In a first aspect, an embodiment of the present invention provides a power router, including:

[0005] Multiple power conversion modules, each corresponding to a plurality of power supply settings in the base station; the power conversion module is connected between the power supply and a DC bus in the base station; the DC bus is used to supply power to each load in the base station; wherein each power conversion module is provided with a PID controller;

[0006] The energy management module includes multiple fuzzy controllers, each of which is connected to each of the PID controllers respectively; the energy management module is used to perform fuzzy PID control on the output power of each of the power supply conversion modules through each of the fuzzy controllers and each of the PID controllers according to the total power demand of each of the loads.

[0007] Optionally, the power supply includes a photovoltaic power generation system, and the power conversion module includes: a photovoltaic power conversion module connected between the photovoltaic power generation system and the DC bus;

[0008] And / or, the power supply includes a wind power generation system, and the power conversion module includes: a wind power conversion module connected between the wind power generation system and the DC bus;

[0009] And / or, the power supply includes an AC power supply system, and the power conversion module includes: a rectifier module connected between the AC power supply system and the DC bus;

[0010] And / or, the power supply includes an energy storage battery, and the power supply conversion module includes: a battery management module connected between the energy storage battery and the DC bus.

[0011] Optionally, the power router further includes: first interfaces whose number is greater than or equal to the number of the power conversion modules, the first interfaces being connected to the energy management module and used to connect to the power conversion modules.

[0012] Optionally, the load includes a DC load, and the power router further includes: a DC conversion module connected between the DC bus and the DC load;

[0013] And / or, the load includes an AC load, and the power router further includes: an inverter module connected between the DC bus and the AC load.

[0014] Optionally, the power router further includes:

[0015] A DC output interface, connected between the DC conversion module and the DC load;

[0016] and / or, second interfaces whose number is greater than or equal to the number of the inverter modules, the second interfaces being connected to the energy management module, and the second interfaces being used to connect to the inverter modules.

[0017] Optionally, the AC power supply system includes: AC power, a diesel generator and a dual power switching switch; the first connection end of the dual power switching switch is connected to the AC power, the second connection end of the dual power switching switch is connected to the diesel generator, and the selection end of the dual power switching switch is connected to the rectifier module.

[0018] Optionally, the PID controller in the photovoltaic power conversion module is provided in the DSP chip of the photovoltaic power conversion module;

[0019] And / or, the PID controller of the wind power conversion module is provided in the DSP chip of the wind power conversion module;

[0020] And / or, the PID controller of the rectifier module is provided in the DSP chip of the rectifier module;

[0021] And / or, each of the fuzzy controllers is arranged in the DSP chip of the energy management module.

[0022] Optionally, the power router further comprises: an RS485 bus and a human-computer interaction module; each of the power conversion modules is connected to the energy management module via the RS485 bus, and the energy management module is also connected to the human-computer interaction module;

[0023] And / or, the energy management module further includes: a cloud service module, configured to communicate with a cloud server of the base station.

[0024] In a second aspect, an embodiment of the present invention further provides a base station, comprising: a power supply, a load, and a power router as provided in any embodiment of the present invention.

[0025] In a third aspect, an embodiment of the present invention further provides a method for controlling a power router, which is applicable to the power router provided by any embodiment of the present invention. The method for controlling the power router includes:

[0026] According to the target power of each power conversion module, the output power of each power conversion module is fuzzy-PID regulated by the fuzzy controller and PID controller corresponding to each power conversion module;

[0027] The fuzzy PID adjustment process for any of the power conversion modules includes:

[0028] The fuzzy controller determines an adjustment amount of a proportional control parameter, an adjustment amount of an integral control parameter, and an adjustment amount of a differential control parameter according to an error and an error change rate between an output power of the power conversion module and a target power;

[0029] The PID controller determines a proportional control parameter according to the adjustment amount of the proportional control parameter, determines an integral control parameter according to the adjustment amount of the integral control parameter, determines a differential control parameter according to the adjustment amount of the differential control parameter, and controls the output power of the power supply conversion module based on the proportional control parameter, the integral control parameter, and the differential control parameter.

[0030] Optionally, before performing fuzzy PID regulation on the output power of each power conversion module, the method further includes:

[0031] The energy management module determines the target power of each power conversion module according to the total power demand of each load, the power supply capacity of each power supply, and the working mode of the base station;

[0032] In the process of performing fuzzy PID regulation on the output power of each of the power conversion modules, when at least one of the total power demand of each of the loads, the power supply capacity of each of the power supply sources, and the operating mode of the base station changes, the method further includes:

[0033] The energy management module updates the target power of each of the power conversion modules according to the total power demand of each of the loads, the power supply capacity of each of the power sources, and the working mode of the base station.

[0034] Optionally, the power supply includes: a photovoltaic power generation system, a wind power generation system, an AC power supply system and an energy storage battery; the power conversion module includes: a photovoltaic power conversion module, a wind power conversion module, a rectifier module and a battery management module; the operating modes of the base station include: a green power and mains power priority mode, a green power and energy storage priority mode and a mains power priority mode;

[0035] In the green power and mains power priority mode, the step of determining the target power of each power conversion module by the energy management module includes:

[0036] If the total power supply capacity of the photovoltaic power generation system and the wind power generation system meets the total power demand, determining the target power of the photovoltaic power conversion module and the target power of the wind power conversion module according to the power supply capacity of the photovoltaic power generation system, the power supply capacity of the wind power generation system and the total power demand;

[0037] If the total power supply capacity of the photovoltaic power generation system and the wind power generation system does not meet the total power demand, and the AC power supply system is not powered off, determining the target power of the photovoltaic power conversion module, the target power of the wind power conversion module, and the target power of the rectifier module according to the power supply capacity of the photovoltaic power generation system, the power supply capacity of the wind power generation system, and the total power demand;

[0038] If the total power supply capacity of the photovoltaic power generation system and the wind power generation system does not meet the total power demand and the AC power supply system is powered off, determining the target power of the photovoltaic power conversion module, the target power of the wind power conversion module, and the target power of the battery management module according to the power supply capacity of the photovoltaic power generation system, the power supply capacity of the wind power generation system, and the total power demand;

[0039] In the green power energy storage priority mode, the step of determining the target power of each power conversion module by the energy management module includes:

[0040] If the total power supply capacity of the photovoltaic power generation system and the wind power generation system meets the total power demand, determining the target power of the photovoltaic power conversion module and the target power of the wind power conversion module according to the power supply capacity of the photovoltaic power generation system, the power supply capacity of the wind power generation system and the total power demand;

[0041] If the total power supply capacity of the photovoltaic power generation system and the wind power generation system does not meet the total power demand, and the total power supply capacity of the photovoltaic power generation system, the wind power generation system and the energy storage battery meets the total power demand of each of the loads, then determining the target power of the photovoltaic power conversion module, the target power of the wind power conversion module and the target power of the battery management module according to the power supply capacity of the photovoltaic power generation system, the power supply capacity of the wind power generation system and the total power demand;

[0042] If the total power supply capacity of the photovoltaic power generation system, the wind power generation system and the energy storage battery does not meet the total power requirement, determining the target power of the photovoltaic power conversion module, the target power of the wind power conversion module, the target power of the battery management module and the target power of the rectifier module according to the power supply capacity of the photovoltaic power generation system, the power supply capacity of the wind power generation system, the power supply capacity of the energy storage battery and the total power requirement;

[0043] In the mains priority mode, the step of determining the target power of each power conversion module by the energy management module includes:

[0044] If the AC power supply system is not powered off, determining the target power of the rectifier module according to the total power demand;

[0045] If the AC power supply system is powered off, the target power of the battery management module is determined according to the total power demand.

[0046] Optionally, the load includes a first-class load and a second-class load;

[0047] In the mains priority mode, when the AC power supply system is powered off, determining the target power of the battery management module according to the total power demand includes:

[0048] When the power supply capacity of the energy storage battery meets the total power requirement, determining the target power of the battery management module according to the total power requirement;

[0049] When the power supply capacity of the energy storage battery does not meet the total power requirement, the energy management module controls to cut off the second type of loads and determines the target power of the battery management module according to the power requirement of the first type of loads.

[0050] The power router provided in an embodiment of the present invention is provided with an energy management module and multiple power conversion modules. Based on the energy management module's regulation of each power conversion module, energy management of multiple power sources can be achieved based on the total power demand of the load, and matching operation of the power sources and loads in the base station can be achieved. In addition, the use of fuzzy PID to control the output power of each power conversion module can improve the stability and robustness of system operation compared to using only PID control. Furthermore, by respectively arranging the PID controller and the fuzzy controller in the power conversion module and the energy management module, since the power conversion module is only equipped with a PID controller, the power conversion module can also be directly applied to devices using other types of intelligent PID control, rather than being limited to fuzzy PID control, thereby effectively improving the versatility of the power conversion module. In summary, the embodiment of the present invention uses the power router as a power conversion and energy management device in the base station, which can reliably achieve matching operation of the power sources and loads in the base station.

[0051] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present invention, nor is it intended to limit the scope of the present invention. Other features of the present invention will become readily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0053] Figure 1 This is a schematic structural diagram of a power router provided by an embodiment of the present invention;

[0054] Figure 2 This is a schematic diagram of the structure of another power router provided by an embodiment of the present invention;

[0055] Figure 3 This is a schematic diagram of the working process of a power router provided by an embodiment of the present invention;

[0056] Figure 4 This is a structural diagram of another power router provided by an embodiment of the present invention;

[0057] Figure 5 This is a flow chart of a fuzzy PID regulation process for a power conversion module provided by an embodiment of the present invention;

[0058] Figure 6 This is a flowchart of a control method for a power router provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0059] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0060] It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and the accompanying drawings are used to distinguish similar items and are not necessarily used to describe a particular order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, such that the embodiments of the present invention described herein can be implemented in sequences other than those illustrated or described herein. Furthermore, the terms "including," "having," and any variations thereof are intended to cover non-exclusive inclusions.

[0061] An embodiment of the present invention provides a power router that can be applied to a base station, such as a 5G base station. Figure 1 This is a schematic diagram of the structure of a power router provided by an embodiment of the present invention. Figure 1 The power router 1000 includes: an energy management module 30 and multiple power conversion modules 40.

[0062] Among them, multiple power supply conversion modules 40 are respectively set corresponding to multiple power supplies 100 in the base station; the power supply conversion module 40 is connected between the power supply 100 and the DC bus LDC in the base station. The DC bus LDC is used to supply power to each load 200 in the base station. Among them, each power supply conversion module 40 is provided with a PID controller (proportional-integral-differential controller) 41. The energy management module 30 includes multiple fuzzy controllers 31, and each fuzzy controller 31 is respectively connected to each PID controller 41. The energy management module 30 is used to perform fuzzy PID control on the output power of each power supply conversion module 40 through each fuzzy controller 31 and each PID controller 41 according to the total power demand of each load 200.

[0063] Exemplarily, the base station can be a communication base station, such as a 5G base station. The base station may include multiple types of power supplies 100, such as at least two of: a wind power generation system, a photovoltaic power generation system, mains electricity, a diesel generator, and an energy storage battery. Among them, each type of power supply 100 can be set to one or more as needed, and is not specifically limited here. Exemplarily, each power supply 100 is connected to each power conversion module 40 in a one-to-one correspondence, and each power conversion module 40 is configured with a PID controller 41, and each PID controller 41 is connected to each fuzzy controller 31 in a one-to-one correspondence. The voltage level of the DC bus LDC can be set according to the communication standard adopted by the base station, for example, it can be set to a 48V DC bus.

[0064] The power conversion module 40 may include a power converter and a control component. The power converter is used to convert the electrical signal provided by the power supply 100 and transmit it to the DC bus LDC. The control component is used to control the operating state of the power converter. The PID controller 41 may be provided in the control component. The energy management module 30 is, for example, an energy management system (EMS). The energy management module 30 plays a decision-making role in the power router and is the core module of energy management. It can be responsible for data collection, monitoring, and energy scheduling.

[0065] The power management process of the power router may be as follows: the energy management module 30 collects the power requirements of each load 200 and the power supply capacity of each power supply 100, allocates the power requirements of each power supply 100 according to the total power requirements of each load 200, and determines the target power output of each power conversion module 40; then, the PID controller 41 in each power conversion module 40 cooperates with its corresponding fuzzy controller 31 to perform fuzzy PID control on the output power of the power conversion module 40 based on the target power of the power conversion module 40. The basic principle of fuzzy PID is as follows: the operating conditions of the system under different working conditions (or working states) are used as a knowledge base. The operating conditions under different working conditions can be obtained based on actual testing or operator experience; the basic methods of fuzzy control theory are used to convert the knowledge base into fuzzy inference rules; the fuzzy controller 31 can use fuzzy inference rules to determine the adjustment value (or change amount) of the PID parameter based on the error and error variation (or error change rate) during the PID adjustment process; the PID controller 41 determines the PID parameters based on the adjustment value of the PID parameters and controls the output power of the power conversion module 40 according to the PID parameters. Among them, the PID parameters specifically include: proportional control parameter K P , integral control parameter K I and the differential control parameter K DIn this way, based on fuzzy PID regulation, the PID parameters of each power conversion module 40 can be adjusted in real time during the dynamic operation of the base station, and the PID parameters can be controlled to always remain near the optimal point, ensuring the stability and robustness of the system operation. For example, the fuzzy processing processes of multiple fuzzy controllers 31 can be performed simultaneously to achieve parallel fuzzy PID control of each power conversion module 40, improving control efficiency and real-time performance.

[0066] The power router provided in an embodiment of the present invention is provided with an energy management module 30 and multiple power conversion modules 40. Based on the regulation of each power conversion module 40 by the energy management module 30, energy management of multiple power sources 100 can be achieved based on the total power demand of the load 200, thereby achieving matching operation of the power sources 100 and the loads 200 in the base station. In addition, the use of fuzzy PID to control the output power of each power conversion module 40 can improve the stability and robustness of system operation compared to using only PID control. Furthermore, by respectively providing the PID controller 41 and the fuzzy controller 31 in the power conversion module 40 and the energy management module 30, since the power conversion module 40 is only equipped with the PID controller 41, the power conversion module 40 can also be directly applied to devices using other types of intelligent PID control, rather than being limited to fuzzy PID control, thereby effectively improving the versatility of the power conversion module 40. In summary, the embodiment of the present invention uses the power router 1000 as a power conversion and energy management device in the base station, which can reliably achieve matching operation of the power sources 100 and the loads 200 in the base station.

[0067] Figure 2 This is a schematic diagram of the structure of another power router provided by an embodiment of the present invention; Figure 3 This is a schematic diagram of the working process of a power router provided by an embodiment of the present invention. Figure 2 and Figure 3 Based on the above embodiments, optionally, there are multiple types of power supply 100 and multiple types of corresponding power conversion modules 40, and several of them are exemplarily described below.

[0068] In one embodiment, optionally, the power supply includes a photovoltaic power generation system 110, and the power conversion module includes: a photovoltaic power conversion module 410, which is connected between the photovoltaic power generation system 110 and the DC bus LDC. The photovoltaic power generation system 110 uses solar photovoltaic panels as an energy source, and the photovoltaic power conversion module 410 may include a DC / DC converter. The photovoltaic power conversion module 410 performs power conversion to obtain a base station power supply. Considering the line loss during transmission, the voltage transmitted on the DC bus LDC can be set to a value slightly higher than the standard voltage required by the base station. For example, if the standard voltage is 48V, the DC bus LDC can be controlled to provide a 52V power supply. For ease of explanation, the following description is based on the standard voltage required by the base station being 48V and the DC bus LDC voltage being 52V.

[0069] In another embodiment, the power supply optionally includes a wind power generation system 120, and the power conversion module includes a wind power conversion module 420 connected between the wind power generation system 120 and the DC bus LDC. For example, the wind power generation system 120 may be a breeze power generation system, and the wind power conversion module 420 may include a DC / DC converter. The wind power conversion module 420 performs power conversion to generate a base station power supply, such as a 52V output power supply.

[0070] In another embodiment, the power supply includes an AC power supply system 130, and the power conversion module includes a rectifier module 430 connected between the AC power supply system 130 and the DC bus LDC. The rectifier module 430 may include an AC / DC converter.

[0071] Specifically, the AC power supply system 130 may include: mains power. Furthermore, the AC power supply system 130 may also include: a diesel generator 132 and a dual-power transfer switch (Automatic Transfer Switch, ATS) 133. The first connection end of the dual-power transfer switch 133 is connected to the mains power, for example, to the AC busbar Lgrid of the mains power, which can provide 220V AC power; the second connection end of the dual-power transfer switch 133 is connected to the diesel generator 132; and the selection end of the dual-power transfer switch 133 is connected to the rectifier module 430. The dual-power transfer switch 133 can be used to switch between the two types of power sources in the AC power supply system 130. The dual-power transfer switch 133 can be configured with an interlocking function, so that only one type of power source can be connected at a time. This prevents power supply failures such as short circuits caused by differences in frequency and phase angle between the power signals provided by the mains power and the diesel generator 132 when the rectifier module 430 is connected to both types of power sources at the same time, thereby ensuring the power supply reliability of the AC power supply system 130.

[0072] In another embodiment, the power supply optionally includes a storage battery 140, and the power conversion module includes a battery management system (BMS) 440 connected between the storage battery 140 and the DC bus LDC. The storage battery 140 and the BMS 440 together constitute an energy storage system 70. The energy storage system 70 can utilize a low-voltage (52V) energy storage solution, directly providing 52V power to the base station to reduce losses.

[0073] For example, the base station may include all the above-mentioned types of power supply 100, see Figure 3 As shown, the red line can represent the flow of electric energy in the system. The electric energy provided by the AC power supply system 130, the photovoltaic power generation system 110 and the wind power generation system 120 can be converged to the DC bus LDC; the energy storage system 70 draws power from the DC bus LDC for energy storage and can also serve as a backup power supply to supply power to the DC bus LDC when necessary.

[0074] Based on the above embodiments, optionally, the core processing components of the control components in each power conversion module 40 are all DSP (Digital Signal Processing) chips, and the core data processing components in the energy management module 30 are also DSP chips. Real-time DSP data processing occurs between the energy management module 30 and each power conversion module 40, participating in controlling the operating status of each module. The DSP communication interface is implemented, for example, via an RJ45 terminal. Specifically, the PID controller in the photovoltaic power conversion module 410 is located in the DSP chip of the photovoltaic power conversion module 410. Furthermore, the PID controller in the wind power conversion module 420 is located in the DSP chip of the wind power conversion module 420. Furthermore, the PID controller in the rectifier module 430 is located in the DSP chip of the rectifier module 430. Furthermore, the PID controller in the battery management module 440 is located in the DSP chip of the battery management module 440. Furthermore, each fuzzy controller 31 is located in the DSP chip of the energy management module 30.

[0075] Continue to see Figure 2 and Figure 3 On the basis of the above embodiments, optionally, a load power supply conversion module is further provided between the DC bus LDC and the load to convert the power provided by the DC bus LDC into the power required by the load.

[0076] Specifically, the load may include a DC load 220, and the power router 1000 further includes: a DC conversion module 60 connected between the DC bus LDC and the DC load 220. Specifically, see Figure 2DC loads can also be divided into Class I loads 221 and Class II loads 222. Class I loads 221 have higher power supply reliability requirements than Class II loads 222. Class II loads 222 include, for example, the DC lighting system in the base station, while Class I loads 221 include, for example, other DC power supply equipment in the base station. For example, the DC conversion module 60 may include a DC / DC converter for converting the DC bus LDC voltage into DC power of multiple voltage levels for supply to different DC loads 220. For example, the DC conversion module 60 can convert the bus 52V into multiple voltage levels, such as 24V / 15V / 12V / 5V, to provide a variety of DC voltages.

[0077] And / or, the load may include an AC load 210, and the power router 1000 further includes: an inverter module 50, connected between the DC bus LDC and the AC load 210. The inverter module 50 can invert the voltage on the DC bus LDC into an AC voltage and provide it to the base station AC bus LAC, and the base station AC bus LAC supplies power to the AC load 210 in the base station. For example, the inverter module 50 can invert 52V DC into 220V AC. Specifically, see Figure 3 During a mains outage, the inverter module 50 can directly invert the voltage on the DC bus LDC and supply power to the AC load 210. When the mains is functioning normally, the mains can supply power to the AC load 210 via the base station AC bus LAC. Furthermore, the inverter module 50 can support grid-connection, converting the power on the DC bus LDC and supplying it to the mains grid. Specifically, the inverter module 50 supports functions such as inversion, rectification, grid connection, bidirectional DC / DC, and AC / DC, and its operating state can be controlled based on demand.

[0078] Continue to see Figure 3 Based on the above embodiments, the power router 1000 may optionally include a protection module 930 for implementing overvoltage, overload, and short-circuit protection for various functional modules in the power router. For example, the protection module 930 may be connected to the energy management module 30 and execute corresponding protection actions based on protection commands issued by the energy management module 30.

[0079] On the basis of the above embodiments, optionally, the power router 1000 further includes: RS485 bus LT, see Figure 3The blue traces in the figure, each power conversion module 40, DC conversion module 60, inverter module 50, each power supply 100, each load 200, and protection module 930 can all be connected to the energy management module 30 via the RS485 bus LT, and data exchange with the energy management module 30 can be achieved via the RS485 bus LT. In other words, each functional component in the base station that requires status monitoring (and the various sensors configured thereon) can be connected to the energy management module 30 via the RS485 bus LT. For example, the energy management module 30 sends a status parameter collection command to the functional module that requires status monitoring via the RS485 bus LT. The functional module can transmit its own status parameters, such as voltage, current, power, and temperature, to the energy management module 30 via the RS485 bus LT according to the collection command. In addition, the energy management module 30 can send a protection command to the protection module 930 via the RS485 bus LT to enable the protection module 930 to perform the corresponding protection action.

[0080] Based on the above embodiments, the power router 1000 may optionally further include a human-computer interaction module; the energy management module 30 may be further connected to the human-computer interaction module. The human-computer interaction module 930 may be used to visualize the above-mentioned state parameters, and a user may issue control instructions to the energy management module 30 through the human-computer interaction module.

[0081] Based on the above embodiments, the energy management module 30 may optionally further include a cloud service module for communicating with the base station's cloud server. For example, the energy management module 30 may upload data to the cloud, and users may remotely monitor and adjust the operating status of the energy management module 30 through the cloud.

[0082] Figure 4 This is a structural diagram of another power router provided by an embodiment of the present invention. Figure 4 For example, the power router can be a cabinet structure, and the energy management module 30 can be set in the cabinet, and connected to other functional modules through various interfaces on the cabinet surface. The human-computer interaction module 920 can be set on the cabinet door, for example, it can include a control screen to facilitate observation and operation by staff. It is understandable that Figure 4 It is only used to show the general location of the components in the power router, such as whether they are installed inside the cabinet, on the surface, or on the cabinet door, and does not represent the actual height ratio and specific location distribution of the components.

[0083] Specifically, the power router 1000 also includes: first interfaces, the number of which is greater than or equal to the number of power conversion modules 40, connected to the energy management module, and the first interfaces are used to connect to the power conversion modules 40. When the number of first interfaces is greater than the number of power conversion modules 40, it is equivalent to reserving an expandable interface on the power router, and more power conversion modules 40 can be connected as needed when the equipment is upgraded or modified. Among them, the first interface can be a standard expandable interface, such as a gold finger interface. Specifically, each first interface may include: a first photovoltaic interface 811 for connecting to the photovoltaic power conversion module 410; a first wind power interface 812 for connecting to the wind power conversion module 420; a first AC interface 813 for connecting to the rectifier module 430; and a first energy storage interface 814 for connecting to the battery management module 440 in the energy storage system 70. Figure 4 For example, it has been shown in Figure 4 The power supply conversion module in the figure may indicate that it has been plugged into the corresponding first interface, and each first interface displayed separately may be considered as a reserved expandable interface.

[0084] The power router 1000 may also include a DC output interface 830 connected between the DC conversion module 60 and the DC load 220. The DC conversion module 60 is, for example, located in a cabinet. The DC output interface 830 may be a standard output interface, enabling plug-and-play operation with multiple DC voltages.

[0085] The power router 1000 may further include: second interfaces 820 , the number of which is greater than or equal to the number of the inverter modules 50 , the second interfaces 820 being connected to the energy management module 30 and used to connect to the inverter modules 50 . Figure 4 For example, it has been shown in Figure 4 The inverter module 50 in FIG. 8 may indicate that it has been plugged into the corresponding second interface 820 . The second interface 820 displayed alone may be considered as a reserved expandable interface.

[0086] The power router 1000 may also include: a circuit breaker module 910, which is set on the surface of the cabinet and is used to control whether each functional module is connected. The circuit breaker module 910 may include: Figure 2 All the switch devices in the power router 1000 shown in FIG. 1 and the control part of each switch device can be connected to the energy management module 30 .

[0087] The architecture of the power router is described below with reference to a specific embodiment.

[0088] Specifically, the base station's energy input includes: mains electricity, photovoltaic power generation systems, wind power generation systems, and diesel generators. The energy storage system uses lithium batteries as energy storage batteries. The base station's energy output includes: a 52V DC bus (for base station communication equipment), 24V / 15V / 12V / 5V DC outputs (for other DC loads in the base station), and 220V AC (for AC loads in the base station). All modules exchange information via the RS485 bus. To comply with communication equipment standards, the entire system uses -52V as the low-voltage terminal and PE (ground terminal) as the high-voltage terminal.

[0089] For the rectifier module, the first AC interface uses a gold finger interface with an expandable design; the rectifier module is 1U in height, can support multiple modules in parallel, and has parallel current sharing technology. The rated output power of a single module can reach 4kW, the input supports 85VAC~265VAC input, and the output voltage is adjustable.

[0090] For photovoltaic power conversion modules: The first photovoltaic interface adopts a gold finger interface with an expandable design; the photovoltaic power conversion module adopts a 1U height, can support multiple modules in parallel, and has parallel current sharing technology. The rated output power of a single module can reach 4kW, the input supports 65VAC~200VDC input, and the output voltage is adjustable.

[0091] For wind power conversion modules: The first interface for wind power uses a gold finger interface with an expandable design; the wind power conversion module adopts a 1U height, can support multiple modules in parallel, and has parallel current sharing technology. The rated output power of a single module can reach 4kW, the input supports 65VAC~200VDC input, and the output voltage is adjustable.

[0092] For the inverter module: the second interface adopts a gold finger interface with an expandable design; the inverter module adopts a 1U height, can support multiple modules in parallel, has parallel technology, the rated output power of a single module can reach 5kW, the input supports 48V±50% input, the output is 220VAC, and it can be off-grid or grid-connected.

[0093] For energy storage modules: The energy storage battery uses a single 52V / 100AH ​​lithium battery module with a 4U height and supports parallel connection of multiple modules.

[0094] The energy management module's functions include at least: monitoring and management, human-computer interaction, electrical signal acquisition, and energy management and distribution. In short, the energy management module is directly responsible for the base station's energy control strategy. It also monitors system failures and anomalies, ensuring timely and rapid equipment protection and safety.

[0095] In summary, embodiments of the present invention provide a small power router for base stations that can manage, distribute, and control energy for the entire base station. The product utilizes a standard chassis and standard interfaces, supporting various energy inputs (photovoltaic, wind power, energy storage batteries, diesel generators, and mains electricity, among others) and outputs (DC 48V, 36V, 24V, 15V, 5V, 12V, and 5V, among others; grid-connected and off-grid 220VAC). Power conversion modules are pluggable and expandable online. Components within the base station communicate with the energy management module via an RS485 bus. The DSP chip within each power conversion module collects and processes various electrical parameters of the entire system in real time, including voltage, current, frequency, phase, and amplitude information. The DSP chip within the energy management module then performs real-time calculations based on economic optimization, energy conservation, and environmental protection, adjusting and predicting each power conversion module accordingly, thereby achieving harmonious coordination and scheduling among various power sources.

[0096] An embodiment of the present invention further provides a control method for a power router, which is applied to the power router provided by any embodiment of the present invention and has corresponding beneficial effects.

[0097] The control method of the power router includes: performing fuzzy PID regulation on the output power of each power conversion module through the fuzzy controller and PID controller corresponding to each power conversion module according to the target power of each power conversion module.

[0098] The energy management module may be configured with a power allocation unit that allocates target power to each power conversion module based on the total power demand of each load in the base station and the power supply capacity of each power source. Exemplarily, the energy management module may be configured with a storage unit that stores a power allocation solution database, so that the power allocation unit allocates target power based on the power allocation solution database. Initially, as many power allocation solutions as possible are collected under different operating conditions, such as different loads and different operating modes, to construct an initial database. Subsequently, the database is continuously updated and optimized based on feedback from base station system operation data, so that the power allocation unit can provide the optimal power allocation solution for different operating conditions as much as possible. Exemplarily, if the current operating condition is one recorded in the power allocation solution database, the target power of each power conversion module can be directly determined based on the power allocation solution corresponding to that operating condition in the database. If the current operating condition is not one recorded in the power allocation solution database, the target power of each power conversion module can be determined based on the power allocation solution corresponding to the operating condition in the database that is closest to the current operating condition. The power allocation solution database is then updated based on the actual output power of each power conversion module obtained after fuzzy PID control.

[0099] Figure 5This is a flow chart of a fuzzy PID adjustment process for a power conversion module provided by an embodiment of the present invention. Figure 5 , the fuzzy PID adjustment process for any power supply conversion module includes:

[0100] S110 , the fuzzy controller determines an adjustment amount of a proportional control parameter, an adjustment amount of an integral control parameter, and an adjustment amount of a differential control parameter according to an error and an error change rate between an output power of the power conversion module and a target power.

[0101] S120. The PID controller determines the proportional control parameter according to the adjustment amount of the proportional control parameter, determines the integral control parameter according to the adjustment amount of the integral control parameter, determines the differential control parameter according to the adjustment amount of the differential control parameter, and controls the output power of the power supply conversion module based on the proportional control parameter, the integral control parameter, and the differential control parameter.

[0102] Among them, the PID parameters at the current moment can be determined according to the following formula:

[0103]

[0104] Among them, K P , K I and K D Respectively represent the proportional control parameter, integral control parameter and differential control parameter at the current moment; K P’ , K I’ and K D’ They represent the proportional control parameter, integral control parameter and differential control parameter of the previous moment respectively; when the current moment is the first moment, K P’ , K I’ and K D’ They represent the initial set proportional control parameters, integral control parameters and differential control parameters respectively; E i represents the error at time i (i.e., the current time); the error may specifically be the error between the output power corresponding to the given input voltage of the power conversion module and the target power, where the given input voltage of the power conversion module is the output voltage of the power supply to which the power conversion module is connected; EC i represents the error variation at time i (i.e. the current moment), i.e. the rate of change of the error; {E i +EC i} P ,{E i +EC i} I and {E i +EC i} D They represent the adjustment amount of the proportional control parameter, the integral control parameter, and the differential control parameter at the current moment respectively.

[0105] The control method for a power router provided in an embodiment of the present invention, based on the regulation of each power conversion module by the energy management module, can achieve energy management for multiple power sources. Furthermore, the use of fuzzy PID to control the output power of each power conversion module can improve the stability and robustness of system operation compared to using only PID control. Furthermore, by respectively placing a PID controller and a fuzzy controller in the power conversion module and the energy management module, and since the power conversion module is only equipped with a PID controller, the power conversion module can also be directly applied to devices using other types of intelligent PID control, rather than being limited to fuzzy PID control, thereby effectively improving the versatility of the power conversion module.

[0106] On the basis of the above-mentioned embodiments, optionally, before performing fuzzy PID adjustment on the output power of each power supply conversion module, it also includes: the energy management module determines the target power of each power supply conversion module according to the total power demand of each load, the power supply capacity of each power supply, and the working mode of the base station.

[0107] The total power demand of each load can be a predicted demand. The base station will make power demand forecasts at preset intervals, such as every day, and allocate energy based on the forecast results. The power supply capacity of each power supply mainly refers to the power supply capacity of energy sources other than the mains. The power supply capacity of photovoltaic and wind power can be obtained based on weather forecasts, etc. The power supply capacity of the energy storage system can be obtained based on the real-time detection of the battery module by the battery management module. The power supply capacity of the mains mainly refers to whether the mains is outage. The power supply capacity of the diesel generator can be determined based on whether the diesel generator is turned on and its rated output capacity. The operating modes of the base station may include: green power mains priority mode, green power storage priority mode, and mains priority mode; the energy management module can determine which type of power source to allocate power to first based on the operating mode of the base station.

[0108] Based on the above embodiments, optionally, during the fuzzy PID regulation of the output power of each power conversion module, when at least one of the total power demand of each load, the power supply capacity of each power source, and the operating mode of the base station changes, the system further includes: the energy management module updating the target power of each power conversion module based on the total power demand of each load, the power supply capacity of each power source, and the operating mode of the base station. In this way, the target power of each power conversion module can be adjusted in a timely manner according to changes in system operating conditions, so that the system operates at the optimal solution.

[0109] Based on the above embodiments, the power supply optionally includes a photovoltaic power generation system, a wind power generation system, an AC power supply system, and a storage battery; and the power conversion module includes a photovoltaic power conversion module, a wind power conversion module, a rectifier module, and a battery management module. Exemplarily, the AC power supply system is powered by mains electricity. The base station's operating modes include: green power and mains priority mode, green power and energy storage priority mode, and mains priority mode.

[0110] The following first describes the meaning of each working mode, and then explains the specific ideas of how the energy management module determines the target power of each power conversion module in each working mode.

[0111] Green Power and Utility Priority Mode: In this mode, the system prioritizes green power input from photovoltaic and wind power. When photovoltaic and wind power inputs cannot meet the system's power demand (i.e., total power demand), the utility power automatically steps in to meet it. Once photovoltaic and wind power inputs meet the system's power demand, the utility power automatically steps out. In this mode, if the utility power is out and green power cannot meet the system's power demand, the energy storage system automatically steps in to meet it. The energy storage system automatically steps out when the utility power is restored.

[0112] Green Power Storage Priority Mode: In this mode, the system prioritizes green power input from photovoltaic and wind power. When photovoltaic and wind power inputs cannot meet the system's power needs, the energy storage system automatically steps in to meet them. If the energy storage capacity is insufficient, the utility grid automatically steps in to meet the system's power needs.

[0113] Mains priority mode: In this mode, the system energy source gives priority to using mains input. After the mains is disconnected, the energy storage system will automatically intervene to meet the system's power demand. When the energy storage power is insufficient, the second-class loads will be cut off to ensure the power demand of the first-class loads. Among them, compared with the second-class loads, the first-class loads are more important, and the losses caused by the power outage of the first-class loads are more serious. Therefore, when the mains is disconnected and only the energy storage system is used for power supply, if the energy storage power is insufficient, it can be considered to cut off some or all of the second-class loads to ensure the power supply of the first-class loads as much as possible. For example, the first-class loads may include communication equipment such as communication antennas, and the second-class loads may include lighting and DC air conditioners.

[0114] The following describes the power distribution scheme in each working mode:

[0115] In the green power and mains power priority mode, the energy management module determines the target power of each power conversion module in the following steps:

[0116] If the combined power supply capacity of the photovoltaic power generation system and the wind power generation system meets the total power demand, the target power of the photovoltaic power conversion module and the target power of the wind power conversion module are determined based on the power supply capacity of the photovoltaic power generation system, the power supply capacity of the wind power generation system, and the total power demand. For example, based on the ratio of the power supply capacity of the photovoltaic power generation system to the power supply capacity of the wind power generation system, the total power demand can be proportionally allocated to the target power of the photovoltaic power conversion module and the target power of the wind power conversion module.

[0117] If the combined power supply capacity of the photovoltaic and wind power generation systems does not meet the total power demand, and the AC power supply system is not disconnected, the target power of the photovoltaic power conversion module, the target power of the wind power conversion module, and the target power of the rectifier module are determined based on the power supply capacity of the photovoltaic and wind power generation systems, and the total power demand. For example, the target power of the photovoltaic power conversion module is determined based on the maximum power supply capacity of the photovoltaic system, the target power of the wind power conversion module is determined based on the maximum power supply capacity of the wind power generation system, and the target power of the rectifier module is determined based on the remaining power in the total power demand.

[0118] If the combined power supply capacity of the photovoltaic power generation system and the wind power generation system does not meet the total power demand, and the AC power supply system is disconnected, the target power of the photovoltaic power conversion module, the target power of the wind power conversion module, and the target power of the battery management module are determined based on the power supply capacity of the photovoltaic power generation system, the power supply capacity of the wind power generation system, and the total power demand. For example, the target power of the photovoltaic power conversion module may be determined based on the maximum power supply capacity of the photovoltaic power generation system, the target power of the wind power conversion module may be determined based on the maximum power supply capacity of the wind power generation system, and the target power of the battery management module may be determined based on the remaining power in the total power demand.

[0119] In the green power storage priority mode, the energy management module determines the target power of each power conversion module in the following steps:

[0120] If the combined power supply capacity of the photovoltaic power generation system and the wind power generation system meets the total power demand, the target power of the photovoltaic power conversion module and the target power of the wind power conversion module are determined based on the power supply capacity of the photovoltaic power generation system, the power supply capacity of the wind power generation system, and the total power demand. For example, based on the ratio of the power supply capacity of the photovoltaic power generation system to the power supply capacity of the wind power generation system, the total power demand can be proportionally allocated to the target power of the photovoltaic power conversion module and the target power of the wind power conversion module.

[0121] If the combined power supply capacity of the photovoltaic power generation system and the wind power generation system does not meet the total power demand, and the combined power supply capacity of the photovoltaic power generation system, the wind power generation system, and the energy storage battery meets the total power demand of each load, then the target power of the photovoltaic power conversion module, the target power of the wind power conversion module, and the target power of the battery management module are determined based on the power supply capacity of the photovoltaic power generation system, the power supply capacity of the wind power generation system, and the total power demand. For example, the target power of the photovoltaic power conversion module is determined based on the maximum power supply capacity of the photovoltaic power generation system, the target power of the wind power conversion module is determined based on the maximum power supply capacity of the wind power generation system, and the target power of the battery management module is determined based on the remaining power in the total power demand.

[0122] If the total power supply capacity of the photovoltaic power generation system, the wind power generation system, and the energy storage battery does not meet the total power demand, the target power of the photovoltaic power conversion module, the target power of the wind power conversion module, the target power of the battery management module, and the target power of the rectifier module are determined based on the power supply capacity of the photovoltaic power generation system, the power supply capacity of the wind power generation system, the power supply capacity of the energy storage battery, and the total power demand. For example, the target power of the photovoltaic power conversion module is determined based on the maximum power supply capacity of the photovoltaic power generation system, the target power of the wind power conversion module is determined based on the maximum power supply capacity of the wind power generation system, the target power of the battery management module is determined based on the maximum power supply capacity of the energy storage battery, and the target power of the rectifier module is determined based on the remaining power in the total power demand.

[0123] In the mains priority mode, the energy management module determines the target power of each power conversion module by:

[0124] If the AC power supply system is not powered off, the target power of the rectifier module is determined based on the total power demand.

[0125] If the AC power supply system is powered off, the target power of the battery management module is determined based on the total power demand. Specifically, the load includes Class I loads and Class II loads; determining the target power of the battery management module based on the total power demand includes:

[0126] When the power supply capacity of the energy storage battery meets the total power requirement, the target power of the battery management module is determined according to the total power requirement.

[0127] When the power supply capacity of the energy storage battery does not meet the total power demand, the energy management module controls the disconnection of the second type of load and determines the target power of the battery management module according to the power demand of the first type of load.

[0128] Figure 6 This is a flowchart of a control method for an energy router provided by an embodiment of the present invention. Figure 6Optimal power allocation can be understood as determining the target power of each power conversion module based on the above power allocation scheme, and the above target power is used to guide the fuzzy PID control process of the power conversion module. Figure 6 The fuzzy PID control processes for one type of green electricity, one type of alternating current, and one type of energy storage battery energy are given as examples of fuzzy PID control processes for different types of power sources. However, this is not intended to limit the present invention. In fact, there may be more power sources in the base station. The sum of the power output by all power sources after conversion by the corresponding power conversion modules is the total output power. Each power conversion module can use a similar fuzzy PID control process for output control. The only difference is that the fuzzy inference rules used in the fuzzy control process may be different, but the algorithm process is the same. Therefore, each power source will not be listed one by one here.

[0129] See also Figure 6 , for each power conversion module, its fuzzy PID control process includes:

[0130] Initial PID parameters are configured at system startup. During operation, the error variable in the PID controller is fed into the fuzzy controller for fuzzy reasoning. Error variables may include, for example, error (the difference between target power and actual output power), deviation (the deviation between a given input voltage and actual output power, specifically the difference between the output power corresponding to a given input voltage and the actual output power), and error rate of change (used to characterize the speed of output power regulation). The fuzzy controller can use trapezoidal membership functions to fuzzify the error variables. Fuzzy control rules can be derived from expert experience and sampled data. For example, by leveraging the relationship that output power increases with increasing given input voltage, fuzzy control rules for different PID parameters can be established to form a rule base. Specifically, a higher differential between the given input voltage and the DC bus voltage results in a higher rate of change in output power; a lower differential between the given input voltage and the DC bus voltage results in a lower rate of change in output power. Given the same error variable, the adjustment direction of the proportional-differential-integral control parameters may vary. Therefore, for different PID parameters, response association rules between a given input voltage and output power can be established based on the output response after input adjustment, forming a rule base. When the system is operating, changes and disturbances in the load environment, such as the load environment, may cause changes in the target power and, consequently, in the error variable. Defuzzification is performed based on different rules in the rule base, such as through weighted averaging, to obtain a set of adjusted values ​​for the PID parameters. The PID controller then determines the PID parameters based on these adjusted values. This control process dynamically changes with the system's operating state, adapting to changing operating conditions in real time. This allows the PID parameters to quickly approach the optimal parameters for that condition, ensuring precise and rapid control of the power conversion module's output power.

[0131] For example, when the load increases, the bus voltage of the DC bus will decrease. At this point, the output power of each power conversion module should be rapidly increased to stabilize the bus voltage. The entire process is as follows: As the load increases, the given target power increases. In transient conditions, the power conversion module has not yet begun to respond, and the bus voltage begins to decrease. The DSP collects the current real-time input voltage, bus voltage, output power, and output power change rate of the power conversion module. The error variable is obtained based on relevant data such as the difference between the collected output power and the target power. The error variable is fuzzified, and then the relevant rules in the rule base are read. The fuzzification is performed using a weighted algorithm to obtain the adjustment values ​​of each PID parameter. These adjustment values ​​are applied to the PID controller to obtain the final PID parameters. The PID controller adjusts the output of the power conversion module based on the PID parameters to quickly achieve the target power and stabilize the bus voltage.

[0132] The fuzzy rule tables of various PID parameters can be found in Tables 1 to 3.

[0133] Table 1 Table 2

[0134]

[0135]

[0136] Table 3

[0137]

[0138] The meanings of the letters in each table are as follows: negative big (NB), negative medium (NM), negative small (NS), zero (O), positive small (PS), positive medium (PM), positive big (PB).

[0139] Based on the above embodiments, the human-computer interaction interface in the human-computer interaction module can optionally display parameter information and operating mode switching methods for each module in the current system. The module parameter information includes: the bus voltage of the DC bus, the output power and current of the rectifier module, the output power and current of the photovoltaic power conversion module, the output power and current of the wind power conversion module, the output power and current of the inverter module, the charging and discharging power and current of the energy storage battery, the power and current of the DC Class I load, the power and current of the DC Class II load, the power and current of the AC load, and the status information of each functional module.

[0140] In this embodiment of the present invention, a fuzzy controller is located in the energy management module, and a PID controller is located in the power conversion module. Real-time data exchange between the energy management module and the power conversion module is achieved through an RJ45 port. The signal transmission process is as follows: Taking the rectifier module as an example, the analog signals of input voltage, input current, input frequency, input phase, output voltage, and output current, obtained by the rectifier module's internal conditioning circuit, are simultaneously transmitted to the rectifier module's DSP chip and the DSP chip in the energy management module. The rectifier module digitizes the analog signals using the ADC (Analog-to-Digital Converter) in the DSP chip. The energy management module obtains the rectifier module's analog parameters and similarly feeds them into the ADC in the DSP chip for digitization. The DSP chip then processes the fuzzy algorithm to obtain real-time PID parameter adjustments, which are then written to the rectifier module's PID controller in real time via the RJ45 port. Based on the digital signals converted by the ADC and the adjustments, the rectifier module's PID controller uses the PID algorithm to adjust the operating frequency and duty cycle of the rectifier module's power transistors to modify the rectifier module's output signal. The same applies to other power conversion modules and will not be described in detail.

[0141] An embodiment of the present invention further provides a base station comprising a power supply, a load, and the power router provided by any embodiment of the present invention, which has corresponding beneficial effects. The base station can be input by five energy sources: wind, solar, oil, storage, and mains electricity. The power router serves as a power conversion and energy management device to adapt to the application requirements of the base station. The power router can use the power router control method provided by any embodiment of the present invention to distribute power. Exemplarily, the base station can be a communications base station, such as a 5G base station.

[0142] It should be understood that the various forms of the processes shown above can be used to reorder, add, or delete steps. For example, the steps described in the present invention can be performed in parallel, sequentially, or in a different order, as long as the desired results of the technical solution of the present invention can be achieved. This is not limited herein.

[0143] The above specific embodiments do not limit the scope of protection of the present invention. Those skilled in the art will appreciate that various modifications, combinations, sub-combinations, and substitutions may be made based on design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention are intended to be included within the scope of protection of the present invention.

Claims

1. A power router, characterized in that: include: Multiple power conversion modules, corresponding to multiple power supply settings in the base station; The power conversion module is connected between the power supply and the DC bus in the base station; the DC bus is used to supply power to various loads in the base station; wherein each of the power conversion modules is provided with a PID controller; An energy management module includes multiple fuzzy controllers, each of which is connected to each PID controller respectively; the energy management module is used to perform fuzzy PID control on the output power of each power supply conversion module through each fuzzy controller and each PID controller according to the total power demand of each load; wherein the energy management module collects the power demand of each load and the power supply capacity of each power supply, and allocates the power supply demand for each power supply according to the total power demand of each load, and determines the target power that each power supply conversion module should output; the PID controller in each power supply conversion module cooperates with its corresponding fuzzy controller to perform fuzzy PID control on the output power of the power supply conversion module based on the target power of the power supply conversion module; the fuzzy processing process of multiple fuzzy controllers is carried out simultaneously to realize the parallel fuzzy PID control of each power supply conversion module; The power router further includes: first interfaces whose number is greater than the number of the power conversion modules, the first interfaces being connected to the energy management module and used to connect to the power conversion modules; the first interfaces are gold finger interfaces.

2. The power router according to claim 1, characterized in that: The power supply includes a photovoltaic power generation system, and the power conversion module includes: a photovoltaic power conversion module connected between the photovoltaic power generation system and the DC bus; And / or, the power supply includes a wind power generation system, and the power conversion module includes: a wind power conversion module connected between the wind power generation system and the DC bus; And / or, the power supply includes an AC power supply system, and the power conversion module includes: a rectifier module connected between the AC power supply system and the DC bus; And / or, the power supply includes an energy storage battery, and the power supply conversion module includes: a battery management module connected between the energy storage battery and the DC bus.

3. The power router according to claim 1 or 2, characterized in that: The load includes a DC load, and the power router further includes: a DC conversion module connected between the DC bus and the DC load; And / or, the load includes an AC load, and the power router further includes: an inverter module connected between the DC bus and the AC load.

4. The power router according to claim 3, characterized in that: Also includes: A DC output interface, connected between the DC conversion module and the DC load; and / or, second interfaces whose number is greater than or equal to the number of the inverter modules, the second interfaces being connected to the energy management module, and the second interfaces being used to connect to the inverter modules.

5. The power router according to claim 2, characterized in that: The AC power supply system includes: mains power, a diesel generator and a dual power switch; the first connection end of the dual power switch is connected to the mains power, the second connection end of the dual power switch is connected to the diesel generator, and the selection end of the dual power switch is connected to the rectifier module.

6. The power router according to claim 2, characterized in that: The PID controller in the photovoltaic power conversion module is provided in the DSP chip of the photovoltaic power conversion module; And / or, the PID controller of the wind power conversion module is provided in the DSP chip of the wind power conversion module; And / or, the PID controller of the rectifier module is provided in the DSP chip of the rectifier module; And / or, each of the fuzzy controllers is arranged in the DSP chip of the energy management module.

7. The power router according to claim 1, characterized in that: Also includes: RS485 bus and human-computer interaction module; Each of the power conversion modules is connected to the energy management module via the RS485 bus, and the energy management module is also connected to the human-computer interaction module; And / or, the energy management module further includes: a cloud service module, configured to communicate with a cloud server of the base station.

8. A base station, characterized in that: include: A power supply, a load, and a power router according to any one of claims 1 to 7.

9. A method for controlling a power router, characterized in that: Applicable to the power router according to any one of claims 1 to 7, the control method of the power router comprising: According to the target power of each power conversion module, the output power of each power conversion module is fuzzy-PID regulated by the fuzzy controller and PID controller corresponding to each power conversion module; The fuzzy PID adjustment process for any of the power conversion modules includes: The fuzzy controller determines an adjustment amount of a proportional control parameter, an adjustment amount of an integral control parameter, and an adjustment amount of a differential control parameter according to an error and an error change rate between an output power of the power conversion module and a target power; The PID controller determines a proportional control parameter according to the adjustment amount of the proportional control parameter, determines an integral control parameter according to the adjustment amount of the integral control parameter, determines a differential control parameter according to the adjustment amount of the differential control parameter, and controls the output power of the power supply conversion module based on the proportional control parameter, the integral control parameter, and the differential control parameter.

10. The control method of the power router according to claim 9, characterized in that: Before performing fuzzy PID regulation on the output power of each power conversion module, the method further includes: The energy management module determines the target power of each power conversion module according to the total power demand of each load, the power supply capacity of each power supply, and the working mode of the base station; In the process of performing fuzzy PID regulation on the output power of each of the power conversion modules, when at least one of the total power demand of each of the loads, the power supply capacity of each of the power supply sources, and the operating mode of the base station changes, the method further includes: The energy management module updates the target power of each of the power conversion modules according to the total power demand of each of the loads, the power supply capacity of each of the power sources, and the working mode of the base station.

11. The control method of the power router according to claim 10, characterized in that: The power supply includes: a photovoltaic power generation system, a wind power generation system, an AC power supply system and an energy storage battery; the power conversion module includes: a photovoltaic power conversion module, a wind power conversion module, a rectifier module and a battery management module; the working modes of the base station include: green power and mains priority mode, green power and energy storage priority mode and mains priority mode; In the green power and mains power priority mode, the step of determining the target power of each power conversion module by the energy management module includes: If the total power supply capacity of the photovoltaic power generation system and the wind power generation system meets the total power demand, determining the target power of the photovoltaic power conversion module and the target power of the wind power conversion module according to the power supply capacity of the photovoltaic power generation system, the power supply capacity of the wind power generation system and the total power demand; If the total power supply capacity of the photovoltaic power generation system and the wind power generation system does not meet the total power demand, and the AC power supply system is not powered off, determining the target power of the photovoltaic power conversion module, the target power of the wind power conversion module, and the target power of the rectifier module according to the power supply capacity of the photovoltaic power generation system, the power supply capacity of the wind power generation system, and the total power demand; If the total power supply capacity of the photovoltaic power generation system and the wind power generation system does not meet the total power demand and the AC power supply system is powered off, determining the target power of the photovoltaic power conversion module, the target power of the wind power conversion module, and the target power of the battery management module according to the power supply capacity of the photovoltaic power generation system, the power supply capacity of the wind power generation system, and the total power demand; In the green power energy storage priority mode, the step of determining the target power of each power conversion module by the energy management module includes: If the total power supply capacity of the photovoltaic power generation system and the wind power generation system meets the total power demand, determining the target power of the photovoltaic power conversion module and the target power of the wind power conversion module according to the power supply capacity of the photovoltaic power generation system, the power supply capacity of the wind power generation system and the total power demand; If the total power supply capacity of the photovoltaic power generation system and the wind power generation system does not meet the total power demand, and the total power supply capacity of the photovoltaic power generation system, the wind power generation system and the energy storage battery meets the total power demand of each of the loads, then determining the target power of the photovoltaic power conversion module, the target power of the wind power conversion module and the target power of the battery management module according to the power supply capacity of the photovoltaic power generation system, the power supply capacity of the wind power generation system and the total power demand; If the total power supply capacity of the photovoltaic power generation system, the wind power generation system and the energy storage battery does not meet the total power requirement, determining the target power of the photovoltaic power conversion module, the target power of the wind power conversion module, the target power of the battery management module and the target power of the rectifier module according to the power supply capacity of the photovoltaic power generation system, the power supply capacity of the wind power generation system, the power supply capacity of the energy storage battery and the total power requirement; In the mains priority mode, the step of determining the target power of each power conversion module by the energy management module includes: If the AC power supply system is not powered off, determining the target power of the rectifier module according to the total power demand; If the AC power supply system is powered off, the target power of the battery management module is determined according to the total power demand.

12. The control method of the power router according to claim 11, characterized in that: The load includes a first-class load and a second-class load; In the mains priority mode, when the AC power supply system is powered off, determining the target power of the battery management module according to the total power demand includes: When the power supply capacity of the energy storage battery meets the total power requirement, determining the target power of the battery management module according to the total power requirement; When the power supply capacity of the energy storage battery does not meet the total power requirement, the energy management module controls to cut off the second type of loads and determines the target power of the battery management module according to the power requirement of the first type of loads.

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