Regional distributed power supply system

Abstract

The invention provides a regional distributed power supply system, and belongs to the field of power electronics, the power supply system comprises power supply modules distributed in a plurality of regions and a master control module connected with the power supply modules, the plurality of power supply modules are connected with the same power input end, and the master control module is connected with the power supply modules. One or more power supply modules in each area are connected with a plurality of loads in the area where the power supply modules are located; the power supply module comprises an EMI filtering assembly, a power supply preprocessing assembly, an impedance matching network, a power conversion assembly and a communication management module. When a certain power supply module breaks down, fault information is reported to the main control module through the communication management module of the power supply module, the communication management module controls the power supply module to actively break away from the whole power supply system, and derating work of the power supply system is achieved when the power supply system breaks down. And when the communication of a certain power supply module fails, the communication management module of the power supply module is judged to fail through the communication management module of the adjacent power supply module, and the main control module isolates the power supply module and enables the power supply system to work in a derating manner.

Description

Technical Field

[0001] The present application belongs to the field of power electronics technology, and in particular relates to a regional distributed power supply system. Background Art

[0002] As the scale of radar load arrays continues to expand, the physical area is getting larger and larger, and the load distribution is becoming more and more dispersed. The power supply system needs to have the characteristics of high power supply quality, low transmission loss, and good electromagnetic compatibility when the power supply is dispersed and transmitted over long distances. The distributed power supply architecture can realize high-voltage bus transmission with low transmission loss, and can supply power nearby at the load end to ensure the quality of load power supply. Therefore, the distributed power supply architecture is often used in large-scale load arrays.

[0003] like Figure 1 The figure shows a conventional distributed power supply system 100, which includes an EMI filter module 110, a power preprocessing module 120, multiple DC-DC power converters 130 and multiple loads 140. The multiple loads 140 form a large-scale array. The EMIt filter module 110 realizes the electromagnetic compatibility of the distributed power supply system. At the same time, the power preprocessing module 120 centrally processes the power supply characteristics and transmits them to the vicinity of the load 140 through the high-voltage bus, and then realizes the nearby power supply of the load 140 through multiple point-to-point DC-DC power converters 130.

[0004] However, the conventional distributed power supply system architecture has the following disadvantages:

[0005] 1) The high-voltage bus cables from the power preprocessing module 120 to each load are long and scattered, and the electromagnetic interference caused by the current reflection ripple of the DC-DC power converter 130 is spread throughout the entire array, which is not conducive to electromagnetic compatibility design;

[0006] 2) Since the power preprocessing module 120 centrally processes the power supply characteristics, when the power preprocessing module 120 fails, the entire power supply system will completely fail and cannot work at a reduced rating;

[0007] 3) The power capacity of the EMIt filter module 110 and the power preprocessing module 120 is fixed, the power of the power supply system is not easy to expand, and the power supply system tends to be customized;

[0008] 4) The distributed DC-DC power converter 130 supplies power to the load 140 point-to-point, and cannot realize short-term high-power consumption of a certain load;

[0009] 5) Multiple DC-DC power converters 130 all communicate with the main control, occupying more main control resources and making the cables more redundant. Summary of the invention

[0010] The purpose of the present application is to provide a regional distributed power supply system to solve or alleviate at least one problem in the background technology.

[0011] The technical solution of the present application is: a regional distributed power supply system, comprising:

[0012] One or more power supply modules with parallel outputs distributed in multiple areas and a main control module connected to the power supply modules, multiple power supply modules are connected to the same power input terminal, and one or more power supply modules in each area are connected to multiple loads in the area where they are located;

[0013] The power supply module includes an EMI filter component, a power preprocessing component, an impedance matching network, a power conversion component and a communication management module. The EMI filter component performs bidirectional filtering on the electromagnetic interference of the power input terminal and the power supply module. The power preprocessing component performs power supply compatibility processing on the power input terminal. The impedance matching network performs impedance matching on the power supply module and the power input terminal. The power conversion component converts the input power into the power supply voltage required by each load. The communication management module performs energy management on the power supply module and is used to communicate with adjacent power supply modules.

[0014] When a power supply module fails, the communication management module of the power supply module reports the fault information to the main control module. The communication management module controls the power supply module to actively disconnect from the entire power supply system, so that the power supply system can operate at a reduced capacity when a fault occurs. When the communication of a power supply module fails, the communication management module of the adjacent power supply module determines that the communication management module of the power supply module has failed, and the main control module isolates the power supply module and reduces the capacity of the power supply system.

[0015] In a preferred embodiment of the present application, data is exchanged between adjacent power supply modules and / or between a power supply module and a main control module via a bus.

[0016] In a preferred embodiment of the present application, the power supply module uses the timing signal of the main control module as a reference, and the power conversion of multiple power supply modules is staggered controlled so that the input reflected current ripples of multiple power supply modules are superimposed in a staggered phase to reduce the electromagnetic interference of the power supply system.

[0017] In a preferred embodiment of the present application, the overall area is divided into multiple areas according to the location and variation range of the instantaneous power of the load.

[0018] In a preferred embodiment of the present application, the number of loads in each area is configured to be no less than the ratio of the maximum instantaneous value of a single load in the area to the steady-state value of a single load, and the total power capacity of the power supply module is the sum of the rated powers of multiple loads in the area and is no less than the maximum instantaneous power of the loads in the area.

[0019] In a preferred embodiment of the present application, when the power capacity of a single power supply module in an area does not meet the sum of the rated powers of the loads in the area, multiple power supply modules are used in parallel for output, and the number of parallel power supply modules is not less than the ratio of the total power capacity of the power supply modules in the area to the power capacity of a single power supply module.

[0020] In a preferred embodiment of the present application, power is transmitted between the power supply module and the load in a single area via one or more connectors, or via a bifurcated bus.

[0021] The present application constructs a regional distributed power supply system through multiple full-function power supply modules, improves the electromagnetic compatibility of the power supply system in a large-scale load array, realizes system degradation in the event of a fault, and can simultaneously realize rapid expansion of the power supply power and short-term high-power power demand of the load / load array, thereby providing stability to the power supply system. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solution provided by the present application, the following is a brief introduction to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the present application.

[0023] Figure 1 It is a schematic diagram of the distributed power supply system architecture of the prior art.

[0024] Figure 2 This is a schematic diagram of the regional distributed power supply system of this application.

[0025] Figure 3 A schematic diagram of regional distributed power supply system expansion and output according to an embodiment of the present application. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the implementation of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below in conjunction with the drawings in the embodiments of this application.

[0027] In order to improve the electromagnetic compatibility and mission reliability of the power supply system in a large-scale load array, while achieving rapid expansion of the power supply capacity and short-term high-power demand of the load, the present application provides a regional distributed power supply system.

[0028] like Figure 2Shown is an architecture diagram of a regional distributed power supply system 200 provided in the present application, wherein the regional distributed power supply system 200 includes one or more parallel output power supply modules 210 distributed in multiple areas A to N and a main control module 220 connected to the power supply modules 210, multiple power supply modules 210 are connected to the same power input terminal VIN of the power supply system, and one or more power supply modules 210 in each area are connected to multiple loads 230 in the area, for powering the array formed by the loads 230 in the area.

[0029] In the present application, the power supply module 210 includes an EMI filter module 211, a power preprocessing module 212, an impedance matching network module 213, a power conversion module 214 and a communication management module 215. The EMI filter module 211, the power preprocessing module 212, the impedance matching network module 213 and the power conversion module 214 are connected in sequence, and the rear end of the power conversion module 214 is connected to a load array composed of multiple loads 230. The EMI filter module 211 is used to suppress the electromagnetic interference generated by the reflected current of the power supply module 210 on the input cable, and realize the two-way filtering of the electromagnetic interference of the power input end and the power supply module 210. The power preprocessing module 212 is used to perform power supply compatibility processing on the power input end of the power supply, and realize the power supply characteristics processing such as anti-reverse connection and anti-surge of the power supply system. The impedance matching network module 213 is used to perform impedance matching on the power supply module and the power input end, and is used to ensure the system stability of the power supply between multiple power supply modules and the power supply system. The power conversion component 214 is used to convert the input power into the power supply voltage required by each load. The communication management module 215 is connected to the power preprocessing module 212 and the impedance matching network module 213, and is connected to the communication management module 215 in the adjacent power supply module 210, and is used for energy management of the power supply module itself, communication between multiple power supply modules 210, and communication with the main control module. In some embodiments of the present application, data communication is performed between adjacent power supply modules 210 and / or with the main control module 220 via a bus.

[0030] In the present application, each power supply module 210 manages its own power status, and the communication and interconnection between two adjacent power supply modules 210 is realized through a bus, and the power status of each power supply module 210 is shared, so that each power supply module 210 has the power status information of all power supply modules 210, and at the same time, any power supply module 210 is selected to communicate with the main control module 220 to realize distributed energy management and management resource sharing.

[0031] When a power supply module 210 fails, the communication management module 215 of the power supply module 210 reports the fault information to the main control module 220, and the communication management module 215 controls the power supply module 210 to actively disconnect from the entire power supply system 200, so as to achieve derating of the power supply system in case of failure. When the communication of a power supply module 210 fails, the communication management module 215 of the adjacent power supply module 210 determines that the communication management module 215 of the power supply module 210 has failed, and the main control module 220 isolates the power supply module 210 and reduces the power supply system 200 to improve the robustness of the power supply system 200.

[0032] In the present application, the power supply module 210 uses the time base signal of the main control module 220 as a reference, and the power conversion of multiple power supply modules 210 is staggered, so that the input reflected current ripples of multiple power supply modules 210 are superimposed in a staggered phase to reduce the electromagnetic interference of the system. For example, in an embodiment of the present application, the power supply system 200 includes three power supply modules 210, namely, power supply module A, power supply module B, and power supply module C. The power supply modules A, power supply modules B, and power supply modules C control the internal power conversion to work at a staggered phase of 120° through the time base of the main control module 220, thereby realizing the staggering of the input reflected current to reduce the interference of the input electromagnetic compatibility.

[0033] like Figure 3 The power expansion and output diagram of the power supply system 200 of one embodiment of the present application is shown. In the power supply system 200, three areas are provided for load power supply, and the whole area is divided into multiple areas according to the location and variation range of the load of instantaneous power.

[0034] For example, in Figure 3 In the embodiment shown, when working, the first column load A1~A4 and the second column load A8~A5 perform maximum instantaneous power changes from top to bottom and from bottom to top in turn, the third column load B1~B4 and the fourth column load B8~B5 perform maximum instantaneous power changes from top to bottom and from bottom to top in turn, the fifth column load C1~C4 and the sixth column load C5~C8 perform maximum instantaneous power changes from top to bottom in turn, and at the same time, the seventh column load C12~C9 and the eighth column load C16~C13 perform maximum instantaneous power changes from bottom to top in turn. Therefore, in this embodiment of the present application, the area where the first column load is located and the area where the second column load is located are divided into area A, the area where the third column load is located and the area where the fourth column load is located are divided into area B, and the fifth to eighth columns are divided into the third area,

[0035] In order to provide stable power supply to the loads in the divided areas, the number of loads in each area is configured in this application to be no less than the ratio of the maximum instantaneous power value of all loads in the area to the steady-state value of a single load. At the same time, the total power capacity of the power supply modules in the area is the sum of the rated powers (i.e., steady-state values) of multiple loads, and the total power capacity is no less than the maximum instantaneous power of the loads in the area. When the power capacity of a single power supply module in the area does not meet the total capacity of the loads in the area, multiple (two or more) power supply modules are used for parallel output, and the number of parallel connections is no less than the ratio of the total power capacity of the power supply modules in the area to the power capacity of a single power supply module.

[0036] For example, in this embodiment of the present application, the maximum instantaneous power value of a single load 210 in area A is 8kW, and the steady-state value of a single load 210 is 1kW, then the number of loads 210 in area A is 8 or more, and in this embodiment, area A is set to 8 loads 210. The load configuration in area B is similar. At this time, the total power capacity of the power supply module 210 in area A is not less than 8kW. For example, a power supply module 210 with a power of 8kW can be set in this embodiment. The power configuration of the power supply module 210 in area B is similar. For area C, it includes 16 loads 210, and a single 8kW power supply module 210 cannot meet the total power requirement of area C. At this time, two 8kW power supply modules 210 can be selected for parallel output. Therefore, in this embodiment of the present application, one power supply module 210 is set in area A, one power supply module 210 is set in area B, and two power supply modules 210 are set in area C.

[0037] The power supply modules of the present application are independent in function and highly adaptable. The power supply modules can be output in parallel. The power supply modules in the area can be expanded by connecting them in parallel nearby. At the same time, in multiple areas, only the input power supply and the output load need to be connected to expand the load power supply scale and achieve high-quality power supply for large-scale load arrays. At the same time, each power supply module is a full-function module and does not rely on a single function module. As the load scale changes, the number of power supply modules can be increased or decreased arbitrarily to achieve rapid expansion of load power.

[0038] In a preferred embodiment of the present application, within a single area, power is transmitted between the power supply module 210 and the power load 210 or load array via one or more connectors, or via a forked bus, so that one output can supply power to multiple loads or load arrays.

[0039] The present application constructs a regional distributed power supply system through multiple full-function power supply modules, improves the electromagnetic compatibility of the power supply system in a large-scale load array, realizes system degradation in the event of a fault, and can simultaneously realize rapid expansion of the power supply power and short-term high-power power demand of the load / load array, thereby providing stability to the power supply system.

[0040] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A regional distributed power supply system, characterized in that: include: One or more power supply modules with parallel outputs distributed in multiple areas and a main control module connected to the power supply modules, multiple power supply modules are connected to the same power input terminal, and one or more power supply modules in each area are connected to multiple loads in the area where they are located; The power supply module includes an EMI filter component, a power preprocessing component, an impedance matching network, a power conversion component and a communication management module. The EMI filter component performs bidirectional filtering on the electromagnetic interference of the power input terminal and the power supply module. The power preprocessing component performs power supply compatibility processing on the power input terminal. The impedance matching network performs impedance matching on the power supply module and the power input terminal. The power conversion component converts the input power into the power supply voltage required by each load. The communication management module performs energy management on the power supply module and is used to communicate with adjacent power supply modules. When a power supply module fails, the communication management module of the power supply module reports the fault information to the main control module. The communication management module controls the power supply module to actively disconnect from the entire power supply system, so that the power supply system can operate at a reduced capacity when a fault occurs. When the communication of a power supply module fails, the communication management module of the adjacent power supply module determines that the communication management module of the power supply module has failed, and the main control module isolates the power supply module and reduces the capacity of the power supply system.

2. The regional distributed power supply system according to claim 1, characterized in that: Data is exchanged between adjacent power supply modules and / or between a power supply module and a main control module via a bus.

3. The regional distributed power supply system according to claim 1, characterized in that: The power supply module uses the time base signal of the main control module as a reference, and the power conversion of multiple power supply modules is staggered and controlled, so that the input reflected current ripples of multiple power supply modules are superimposed in a staggered phase to reduce the electromagnetic interference of the power supply system.

4. The regional distributed power supply system according to any one of claims 1 to 3, characterized in that: The overall area is divided into multiple areas according to the location and variation range of the instantaneous power of the load.

5. The regional distributed power supply system according to claim 4, characterized in that: The number of loads in each area is configured to be no less than the ratio of the maximum instantaneous value of a single load in the area to the steady-state value of a single load, and the total power capacity of the power supply module is the sum of the rated powers of multiple loads in the area and is no less than the maximum instantaneous power of the loads in the area.

6. The regional distributed power supply system according to claim 5, characterized in that: When the power capacity of a single power supply module in an area does not meet the sum of the rated powers of the loads in the area, multiple power supply modules are used in parallel for output, and the number of parallel power supply modules shall not be less than the ratio of the total power capacity of the power supply modules in the area to the power capacity of a single power supply module.

7. The regional distributed power supply system according to claim 1, characterized in that: The power supply modules and loads in a single area are transmitted via one or more connectors or via a branched busbar.

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