Remote power distribution device of distributed power supply architecture and method thereof

Abstract

The invention provides a remote power distribution device of a distributed power supply architecture and a method thereof. The remote power distribution device comprises a plurality of solid-state power controllers, and each solid-state power controller comprises an isolated power supply module, an AC bus bar, a DC bus bar, a DC bus bar, a DC bus bar and a DC bus bar, the isolation power supply module converts the power supply input from the AC bus bar or the DC bus bar into the control power supply required by the work of the corresponding solid-state power controller so as to provide the control power supply required by the work for the corresponding solid-state power controller. The mother board power supply module is connected with the direct current bus bar, and when the isolation power supply module cannot provide a control power supply required by work for the solid-state power controller, the mother board power supply module is connected with the direct current bus bar; the motherboard power module instead provides the solid state power controller with the control power required for operation by converting the control power input from the DC bus bar to the control power required for operation of the solid state power controller.

Description

Technical Field

[0001] The present invention relates to an aviation power supply system, and more particularly to a remote power distribution device and method using a solid-state power controller. Background Art

[0002] Aircraft generally use remote power distribution units (RPDUs) to power onboard equipment. For example, advanced aircraft such as A350, B787 and C919 all use RPDUs. Several RPDUs are distributed in various locations on the aircraft to provide power distribution, control and protection for onboard equipment. Common RPDU internal architectures are as follows: Figure 1 As shown. Specifically, the RPDU 102 is usually composed of two redundant power supply / communication boards 104 and several AC / DC solid-state power controllers (SSPC) 106. Among them, SSPC is a power control module that uses semiconductor devices to replace electromechanical switches as the actual actuator of the circuit and provides line protection in the form of overcurrent protection software; while the power supply / communication board provides the SSPC with the control power required for operation, and as a communication module in the device, provides the SSPC with the functions of status collection and control instruction distribution. This RPDU internal power supply method uses a dedicated power supply board (i.e., power supply / communication board) to centrally power the internal devices. Figure 2 The corresponding centralized power supply architecture is shown, wherein the centralized power supply board 202 draws power from the aircraft's 28V DC bus 204 and then distributes it to each power-consuming board and device after voltage conversion.

[0003] However, the above-mentioned centralized power supply architecture has the following problems in practical applications: (1) The heat points inside the equipment are concentrated, and the power supply board needs to add corresponding heat dissipation measures, such as increasing the heat dissipation area, board spacing, etc., thereby increasing the volume and weight of the equipment; (2) The operating voltage of the internal driver, op amp, processor and other devices of the SSPC is usually 12V, 5V, 3.3V, etc., and the centralized power supply is difficult to ensure the input power supply voltage stability of the remote low-voltage device, thereby affecting the power supply quality of the SSPC; (3) The failure of the power supply board will cause all SSPCs in the equipment to be unable to supply power, and the number of affected loads is large (usually a single RPDU has about 70 distribution channels). Therefore, there is a need for an improved remote power distribution device and method thereof in the art. Summary of the invention

[0004] This Summary is provided to introduce some concepts in a simplified form that are further described below in the Detailed Description. This Summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.

[0005] One of the purposes of the present invention is to provide a remote power distribution device and method for a distributed power supply architecture. The remote power distribution device cancels the original centralized power supply board inside the remote power distribution device (RPDU), thereby avoiding the centralized heat source inside the RPDU device. Instead, the solid-state power controller (SSPC) is set to have two power supplies: one is to obtain power from the input of the AC / DC power distribution channel by adding an isolated power supply inside the SSPC channel to generate the control power supply for each circuit module required for the SSPC to work; the other is to take power from the 28V control power supply of the RPDU, and the SSPC motherboard power supply module provides the channel with the control power supply required for the device to work, thereby solving the problem of power supply stabilization of low-voltage devices.

[0006] According to one aspect of the present invention, a remote power distribution device of a distributed power supply architecture is provided, which is used to power multiple onboard devices, and the remote power distribution device includes multiple solid-state power controllers, each of the multiple solid-state power controllers includes: an isolation power supply module, the input end of the isolation power supply module is connected to an AC bus or a DC bus, and the isolation power supply module converts the power supply input from the AC bus or the DC bus into the control power required for the operation of the corresponding solid-state power controller to provide the control power required for the operation of the corresponding solid-state power controller; and a motherboard power supply module, which is connected to the DC bus, and when the isolation power supply module cannot provide the control power required for the operation of the solid-state power controller, the motherboard power supply module instead converts the control power input from the DC bus into the control power required for the operation of the solid-state power controller to provide the control power required for the operation of the solid-state power controller.

[0007] In one embodiment of the present invention, when the onboard equipment connected to the solid-state power controller is powered by a DC bus, the isolation power supply module is a DC isolation power supply module, and the input end of the DC isolation power supply module is connected to the DC bus, thereby providing the solid-state power controller with the control power required for operation; or when the onboard equipment connected to the solid-state power controller is powered by an AC bus, the isolation power supply module is an AC isolation power supply module, and the input end of the AC isolation power supply module is connected to the AC bus, thereby providing the solid-state power controller with the control power required for operation.

[0008] In a further embodiment of the present invention, the DC isolation power supply module includes: a zero voltage switching (ZVS) circuit; and a BUCK step-down circuit.

[0009] In a further embodiment of the present invention, the AC isolation power supply module includes: a capacitor voltage divider circuit; a rectifier circuit; and a zero voltage switching (ZVS) circuit.

[0010] In another embodiment of the present invention, a motherboard power module includes: a voltage step-down circuit; and an isolation voltage stabilization circuit.

[0011] In another embodiment of the present invention, each of the plurality of solid-state power controllers uses semiconductor devices and implements the functions of a circuit breaker and a relay through a software algorithm, thereby controlling the on-off connection with the corresponding onboard equipment.

[0012] In a further embodiment of the present invention, each of the multiple solid-state power controllers further includes: a main switch MOS tube, used to control the actual on-off of the power circuit of the corresponding airborne device among the multiple airborne devices; a central processing unit, used to implement overcurrent protection and the sending of on-off signals for the main switch MOS tube through software; a driving module, used to receive control instructions from the central processing unit to implement switch drive control of the main switch MOS tube; and an isolated communication module, used to feed back information from the central processing unit to the processor module in the remote power distribution device.

[0013] In a further embodiment of the present invention, the output voltage of the AC bus and the DC bus is higher than the voltage of the control power supply required for the operation of the solid-state power controller, and the control power supply required for the operation of the solid-state power controller includes: the control power supply of the driving module of the solid-state power controller; and the control power supply of the central processing unit of the solid-state power controller.

[0014] In a further embodiment of the present invention, the output voltage of the AC bus is 115V AC; the output voltage of the DC bus is 28V DC; and the control power supply required for the solid-state power controller to operate includes at least one of the following: 3.3V DC, 5V DC, 12V DC.

[0015] According to another aspect of the present invention, a method for a remote power distribution device of a distributed power supply architecture of the present invention is provided, the method comprising: receiving a power supply input from an AC bus or a DC bus, and a control power supply input from a DC bus at a solid-state power controller among the multiple solid-state power controllers; an isolation power supply module in the solid-state power controller converts the power supply input into a control power required for the solid-state power controller to work, and a motherboard power supply module in the solid-state power controller converts the control power supply input into a control power required for the solid-state power controller to work; detecting whether the isolation power supply module is capable of providing the control power required for the solid-state power controller to work; and in the event that it is detected that the isolation power supply module is capable of providing the control power required for the solid-state power controller to work, the isolation power supply module provides the control power required for the solid-state power controller to work, and in the event that the isolation power supply module is unable to provide the control power required for the solid-state power controller to work, the motherboard power supply module instead provides the control power required for the solid-state power controller to work.

[0016] These and other features and advantages will become apparent by reading the following detailed description and by reference to the associated drawings.It is to be understood that the foregoing general description and the following detailed description are illustrative only and are not restrictive of the aspects of what is claimed. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to understand the manner in which the above features of the present invention are used in detail, the above briefly summarized contents can be described in more detail with reference to various embodiments, some of which are shown in the accompanying drawings. However, it should be noted that the accompanying drawings only show some typical aspects of the present invention and should not be considered to limit its scope, because the description may allow for other equally effective aspects.

[0018] Figure 1 A schematic diagram illustrating a conventional remote power distribution device.

[0019] Figure 2 A schematic diagram of the centralized power supply architecture of traditional remote power distribution devices is explained.

[0020] Figure 3 A schematic diagram of a distributed power supply architecture of a remote power distribution device according to an embodiment of the present invention is illustrated.

[0021] Figure 4 A schematic diagram of a DC isolation power supply module according to an embodiment of the present invention is illustrated.

[0022] Figure 5 A schematic diagram of an AC isolated power supply module according to an embodiment of the present invention is illustrated.

[0023] Figure 6A schematic diagram illustrating a motherboard power module according to one embodiment of the present invention is illustrated.

[0024] Figure 7 A schematic diagram of a remote power distribution device according to one embodiment of the present invention is illustrated.

[0025] Figure 8 A three-dimensional structural diagram of a remote power distribution device according to an embodiment of the present invention is illustrated.

[0026] Fig. 9 A flow chart illustrating a method for remote power distribution devices of a distributed power supply architecture according to one embodiment of the present invention.

[0027] Fig.10 The flowchart of the remote power distribution device of the distributed power supply architecture according to one embodiment of the present invention is illustrated.

[0028] In the drawings, the drawings are not drawn to scale. DETAILED DESCRIPTION

[0029] The present invention will be described in detail below in conjunction with the accompanying drawings, and the features of the present invention will be further revealed in the following specific description.

[0030] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as being limited to the embodiments described herein, which are instead provided for a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are only for exemplary purposes and are not intended to limit the scope of protection of the present disclosure.

[0031] In the description of the present disclosure, it should be noted that, unless otherwise specified, "multiple" means more than two; the terms "upper", "lower", "left", "right", "inside", "outside", etc. indicate positions or positional relationships only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present disclosure. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. "Vertical" is not strictly vertical, but is within the allowable error range. "Parallel" is not strictly parallel, but is within the allowable error range.

[0032] The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structure of the present disclosure. In the description of the present disclosure, it should also be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to the specific circumstances.

[0033] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present disclosure. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0034] In the description of the embodiments of the present disclosure, the term "and / or" is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0035] Figure 3 FIG. 2 shows a distributed power supply architecture of a remote power distribution unit (RPDU) 302 according to an embodiment of the present invention. Figure 3 As shown, the remote power distribution device 302 is used to power multiple electrical loads 304 (i.e., onboard equipment), and the remote power distribution device 302 includes multiple solid-state power controllers (SSPCs). For ease of explanation, Figure 3 5 SSPCs are shown, namely 306a, 306b, 306c, 306d, 306e, but it can be appreciated that more or fewer SSPCs can be provided as needed. Figure 3 The bus bar 312 in FIG. 3 may represent an AC bus bar, a DC bus bar, or both according to actual conditions.

[0036] Each of the multiple solid-state power controllers in the remote power distribution device 302 includes a respective isolation power module and a motherboard power module. The input end of the isolation power module is connected to an AC bus or a DC bus, and the isolation power module converts the power supply input from the AC bus or the DC bus into the control power required for the operation of the corresponding solid-state power controller to provide the control power required for the operation of the corresponding solid-state power controller. In addition, the motherboard power module is connected to the DC bus, and when the isolation power module cannot provide the control power required for the operation of the solid-state power controller, the motherboard power module instead converts the control power input from the DC bus into the control power required for the operation of the solid-state power controller to provide the control power required for the operation of the solid-state power controller.

[0037] The following description will be made using SSPC 306a as an example. Other SSPCs (such as 306b, 306c, 306d, and 306e) also have similar structures, and thus will not be described in detail. Figure 3 As shown, the SSPC 306a may include an isolated power module 308a and a motherboard power module 310a. The input end of the isolated power module 308a is connected to an AC bus or a DC bus 312, and the isolated power module 308a converts the power supply input from the AC bus or the DC bus 312 into the control power required for the operation of the SSPC 306a to provide the control power required for the operation of the SSPC 306a. In addition, the motherboard power module 310a is connected to the DC bus 312 (not shown), and when the isolated power module 308a cannot provide the control power required for the operation of the SSPC 306a, the motherboard power module 310a instead converts the control power input from the DC bus 312 into the control power required for the operation of the SSPC 306a to provide the control power required for the operation of the SSPC 306a.

[0038] In a non-limiting embodiment, when the airborne equipment connected to the SSPC 306a is powered by a DC bus, the isolated power module 308a is a DC isolated power module, and the input end of the DC isolated power module is connected to the DC bus 312, thereby providing the SSPC 306a with the control power required for operation. When the airborne equipment connected to the SSPC 306a is powered by an AC bus, the isolated power module 308a is an AC isolated power module, and the input end of the AC isolated power module is connected to the AC bus 312, thereby providing the SSPC 306a with the control power required for operation. Similarly, whether the isolated power module in other SSPCs is powered by a DC bus or an AC bus may also depend on whether the airborne equipment connected to the SSPC is powered by a DC bus or an AC bus.

[0039] In a further non-limiting embodiment, the DC isolated power supply module may include a zero voltage switching (ZVS) circuit and a BUCK step-down circuit. Specifically, a ZVS self-resonant circuit is used for the DC SSPC power supply, which has a simple circuit scheme, high conversion efficiency and high reliability. Furthermore, the step-down of the internal power supply can be achieved by adding a BUCK circuit on the output side of the ZVS circuit.

[0040] Figure 4 FIG. 1 is a schematic diagram of a DC isolation power supply module according to an embodiment of the present invention. Figure 4 In the figure, the DC isolation power supply module includes a ZVS circuit 402 and a BUCK step-down circuit 404. Specifically, the circuit uses the 28V DC power provided by the DC bus 312 as the Ctrl_Pwr input, and outputs different voltages on the T1 winding through the internal oscillation circuit. At this time, the BUCK step-down circuit 404 is added to the T1 winding to achieve linear regulation of the output voltage, and the output terminal Vcc is connected to various control devices inside the SSPC.

[0041] In another further non-limiting embodiment, the AC isolated power supply module may include a capacitor voltage divider circuit, a rectifier circuit, and a zero voltage switch (ZVS) circuit. Specifically, for the AC SSPC power supply, the capacitor voltage divider circuit and the rectifier circuit are connected to the input end of the ZVS circuit as described above. Through the capacitor voltage divider and rectification, a small portion of active power can be obtained from the AC input, so that it is suitable for low-power power supply.

[0042] Figure 5 FIG. 1 is a schematic diagram of an AC isolation power supply module according to an embodiment of the present invention. Figure 5 In the figure, the AC isolated power supply module includes a capacitor voltage divider circuit 502, a rectifier circuit 504 and a ZVS circuit 506. Specifically, the circuit uses the 115V AC power provided by the AC bus 312 as the input Vin, and the voltage is reduced by the capacitor voltage divider circuit 502 and then output to the rectifier diode (i.e., the rectifier circuit 504) to achieve AC / DC conversion, and then the output DC power is connected to the ZVS circuit 506 as described above, and finally outputs different levels of voltage to each control device inside the SSPC.

[0043] In another non-limiting embodiment, the motherboard power module may include a step-down circuit and an isolated voltage regulator circuit. Specifically, when a power supply failure occurs in the power circuit using the isolated power module described above, the motherboard power module of the SSPC may be used as a backup power supply for the channel instead.

[0044] Figure 6 FIG. 1 is a schematic diagram of a motherboard power module according to an embodiment of the present invention. Figure 6In the figure, the motherboard power module includes a step-down circuit 602 and an isolation voltage regulator circuit 604. Specifically, the circuit uses the 28V DC power provided by the DC bus 312 as the input Vin, converts it into 5V DC power through the step-down conversion chip (i.e., the step-down circuit 602), and then uses a push-pull circuit with a fixed duty cycle combined with an isolation transformer (i.e., the isolation voltage regulator circuit 604) to achieve isolation from the power power, and finally provides the 5V DC control power output Vcc to the motherboard power module of the SSPC for backup use.

[0045] In yet another non-limiting embodiment, each of the plurality of SSPCs uses semiconductor devices and implements the functions of a circuit breaker and a relay through a software algorithm, thereby controlling the on-off connection with the corresponding onboard equipment.

[0046] Figure 7 FIG. 1 is a schematic diagram of a remote power distribution device according to an embodiment of the present invention. Figure 7 In the example, RPDU 702 includes multiple SSPCs. For ease of explanation, Figure 7 3 SSPCs are shown, namely, AC SSPC 706a having the AC isolation power module described above, DC SSPC 706b having the DC isolation power module described above, and a certain SSPCn 706c, but it can be appreciated that more or less different types of SSPCs can be provided as required. These SSPCs use semiconductor switches to replace mechanical switches as the actuators of circuit switches, and use software algorithms to simulate the protection curves of thermal circuit breakers, thereby realizing the functions of circuit breakers and relays.

[0047] In a further non-limiting embodiment, each of the plurality of SSPCs further comprises a main switch MOS tube, a central processing unit, a driving module and an isolated communication module. The main switch MOS tube can be used to control the actual on-off of the power circuit of the corresponding airborne device among the plurality of airborne devices, the central processing unit can be used to implement overcurrent protection and the sending of on-off signals for the main switch MOS tube through software, the driving module can be used to receive control instructions from the central processing unit to implement on-off drive control of the main switch MOS tube, and the isolated communication module can be used to feed back information from the central processing unit to the processor module in the RPDU 702.

[0048] Specifically, AC SSPC 706a is used as an example for explanation. Other SSPCs (such as DC SSPC 706b, SSPCN 706c) also have similar structures, so they are not repeated here. AC SSPC 706a mainly includes a motherboard power module 704a, an isolated power module 708a, a central processing unit 710a, a drive module 712a, an isolated communication module 714a and a main switch MOS tube 716a. Among them, the isolated power module 708a provides the control power required for the other components inside the AC SSPC 706a. The central processing unit 710a implements overcurrent protection and the on-off signal transmission of the main switch MOS tube 716a through software. The drive module 712a receives the control instruction from the central processing unit 710a to realize the switch drive control of the main switch MOS tube 716a. The isolated communication module 714a feeds back the information of the central processing unit 710a to the processor module (not shown) in the RPDU 702, and reports it to the avionics network. The main switch MOS tube 716a is responsible for the actual on and off of the power circuit.

[0049] In a further non-limiting embodiment, the output voltage of the AC bus 720 and the DC bus 730 is higher than the voltage of the control power required for the operation of each SSPC, and the control power required for the operation of any SSPC includes the control power of the drive module of the SSPC and the control power of the central processing unit of the SSPC. For example, the output voltage of the AC bus 720 is 115V AC, the output voltage of the DC bus 730 is 28V DC, and the control power required for the operation of the SSPC may include 3.3VDC, 5V DC, and 12VDC.

[0050] Specifically, for the AC SSPC 706a, the isolated power module 708a therein can convert the output voltage 115V AC of the AC bus 720 into 3.3V DC, 5V DC, and 12V DC required for the operation of the AC SSPC 706a. In addition, when the isolated power module 708a cannot supply power normally, the motherboard power module 704a instead converts the output voltage 28V DC of the DC bus 730 into 3.3V DC, 5V DC, and 12V DC required for the operation of the AC SSPC 706a.

[0051] As for the DC SSPC 706b, the isolated power module 708b therein can convert the output voltage 28V DC of the DC bus bar 730 into 3.3V DC, 5V DC, and 12V DC required for the operation of the DC SSPC 706b. Similarly, when the isolated power module 708b cannot supply power normally, the motherboard power module 704b converts the output voltage 28V DC of the DC bus bar 730 into 3.3V DC, 5V DC, and 12V DC required for the operation of the DC SSPC 706b instead.

[0052] Accordingly, Figure 8 FIG. 1 shows a schematic diagram of the three-dimensional structure of a remote power distribution device according to an embodiment of the present invention. Figure 8 In the embodiment, busbar 802 includes an AC busbar and a DC busbar. The remote power distribution device 804 adds an isolation power module in each SSPC channel to realize power supply from its own power circuit, thereby solving the problem of concentrated heat source in the remote power distribution device and improving the reliability of the device. It can be understood that for the sake of clarity, the motherboard power module exists but is not in the Figure 8 Shown in.

[0053] Fig. 9 A flowchart illustrating a method 900 for a remote power distribution device for a distributed power supply architecture according to an embodiment of the present invention. The remote power distribution device may include a plurality of solid state power controllers (SSPCs) as described above, and each SSPC includes an isolation power module and a motherboard power module.

[0054] At block 910 , the method 900 may include receiving, at one SSPC of the plurality of SSPCs, a power supply input from an AC bus or a DC bus, and a control power supply input from a DC bus.

[0055] At block 920 , the method 900 may include: the isolated power supply module in the SSPC converting the power supply input into the control power required for the operation of the SSPC, and the motherboard power supply module in the SSPC converting the control power supply input into the control power required for the operation of the SSPC.

[0056] At block 930 , the method 900 may include detecting whether the isolated power module is capable of providing the SSPC with the control power required for operation.

[0057] In box 940, method 900 may include: in the case where it is detected that the isolation power supply module is able to provide the control power required for the operation of the SSPC, the isolation power supply module provides the control power required for the operation of the SSPC, and in the case where the isolation power supply module is unable to provide the control power required for the operation of the SSPC, the motherboard power supply module provides the control power required for the operation of the SSPC instead.

[0058] Fig.10 A flowchart illustrating a remote power distribution unit (RPDU) of a distributed power supply architecture according to an embodiment of the present invention is illustrated.

[0059] Specifically, the workflow starts at step 1002 , and the following explanation is given by taking the bus bar providing 115V AC power or 28V DC power as an example.

[0060] At step 1004 , the RPDU receives a power supply input (eg, 115VAC / 28VDC) from an AC / DC bus, and at step 1006 , the RPDU receives a control power supply input from a 28V DC bus.

[0061] In step 1008, the isolated power module of the SSPC inside the RPDU converts 115VAC / 28VDC into the power required by the components of the SSPC, and in step 1010, the motherboard power module of the SSPC provides the required power to the components of the SSPC.

[0062] In step 1012, it is detected whether the isolated power supply module operates normally.

[0063] In step 1014, when it is determined that the isolated power module operates normally, the SSPC channel is powered by its own isolated power module.

[0064] In step 1016, when it is determined that the isolation power module is not operating normally, the SSPC channel is powered by the motherboard power module.

[0065] Finally, the workflow ends at step 1018 .

[0066] The above describes the remote power distribution device and corresponding method of the distributed power supply architecture of the present invention. It can be seen that the present invention has the following advantages: (1) The power conversion control power inside the SSPC channel is used to provide working power for the equipment, avoiding the concentrated heat source inside the RPDU equipment and reducing the weight of the equipment; (2) The motherboard power module is used to provide backup power, which improves the reliability of the equipment; (3) The power supply and voltage regulation problem of low-voltage devices is solved by adding a transformer and an isolation voltage regulator module to the distributed power supply architecture and the SSPC channel.

[0067] Throughout the specification, reference has been made to "one example" or "an example", which means that the specifically described features, structures, or characteristics are included in at least one example. Therefore, the use of such phrases may refer to more than one example. Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more examples.

[0068] However, one skilled in the relevant art may recognize that the examples may be practiced without one or more of the specific details, or with other methods, resources, materials, etc. In other instances, well-known structures, resources, or operations are not shown or described in detail to avoid obscuring aspects of the examples.

[0069] Although examples and applications have been illustrated and described, it should be understood that these examples are not limited to the precise configuration and resources described above. Various modifications, changes and variations that are obvious to those skilled in the art can be made to the arrangement, operation and details of the methods and systems disclosed herein without departing from the scope of the examples claimed.

Claims

1. A remote power distribution device of a distributed power supply architecture, the remote power distribution device is used to power a plurality of airborne devices, and the remote power distribution device comprises a plurality of solid-state power controllers, each of the plurality of solid-state power controllers comprises: an isolated power supply module, wherein an input end of the isolated power supply module is connected to an AC bus bar or a DC bus bar, and the isolated power supply module converts a power supply input from the AC bus bar or the DC bus bar into a control power supply required for the operation of the corresponding solid-state power controller to provide the control power required for the operation of the corresponding solid-state power controller; and A motherboard power supply module, which is connected to the DC bus bar, and when the isolation power supply module is unable to provide the control power required for the solid-state power controller to operate, the motherboard power supply module alternatively provides the control power required for the solid-state power controller to operate by converting the control power input from the DC bus bar into the control power required for the solid-state power controller to operate.

2. The remote power distribution device according to claim 1, characterized in that: When the airborne equipment connected to the solid-state power controller is powered by the DC bus, the isolated power supply module is a DC isolated power supply module, and the input end of the DC isolated power supply module is connected to the DC bus, thereby providing the solid-state power controller with the control power required for operation; or When the onboard equipment connected to the solid-state power controller is powered by the AC bus, the isolated power supply module is an AC isolated power supply module, and the input end of the AC isolated power supply module is connected to the AC bus, thereby providing the solid-state power controller with the control power required for its operation.

3. The remote power distribution device according to claim 2, characterized in that: The DC isolated power supply module comprises: Zero voltage switching (ZVS) circuit; and BUCK step-down circuit.

4. The remote power distribution device according to claim 2, characterized in that: The AC isolated power supply module comprises: Capacitor voltage divider circuit; a rectifier circuit; and Zero voltage switching (ZVS) circuit.

5. The remote power distribution device according to claim 1, characterized in that: The motherboard power module comprises: a step-down circuit; and Isolation voltage regulator circuit.

6. The remote power distribution device according to claim 1, characterized in that: Each of the plurality of solid-state power controllers uses semiconductor devices and implements the functions of a circuit breaker and a relay through a software algorithm, thereby controlling the connection and disconnection between the corresponding onboard equipment.

7. The remote power distribution device according to claim 6, characterized in that: Each of the plurality of solid-state power controllers further comprises: A main switch MOS tube, used to control the actual on-off of a power circuit of a corresponding airborne device among the plurality of airborne devices; A central processing unit, used to implement overcurrent protection and send an on / off signal for the main switch MOS tube through software; A driving module, used for receiving a control instruction from the central processing unit to realize switch driving control of the main switch MOS tube; and An isolated communication module is used to feed back information from the central processing unit to a processor module in the remote power distribution device.

8. The remote power distribution device according to claim 7, characterized in that: The output voltage of the AC busbar and the DC busbar is higher than the voltage of the control power supply required for the solid-state power controller to work, and the control power supply required for the solid-state power controller to work includes: A control power supply for a drive module of the solid-state power controller; and The solid-state power controller controls power to the central processing unit.

9. The remote power distribution device according to claim 8, characterized in that: The output voltage of the AC busbar is 115V AC; The output voltage of the DC busbar is 28V DC; and The control power supply required for the solid-state power controller to work includes at least one of the following: 3.3V DC, 5V DC, and 12VDC.

10. A method for a remote power distribution device of a distributed power supply architecture according to any one of claims 1 to 9, the method comprising: Receiving, at a solid-state power controller among the plurality of solid-state power controllers, a power supply input from the AC bus or the DC bus, and a control power supply input from the DC bus; The isolation power supply module in the solid-state power controller converts the power supply input into the control power required for the operation of the solid-state power controller, and the motherboard power supply module in the solid-state power controller converts the control power supply input into the control power required for the operation of the solid-state power controller; Detecting whether the isolated power supply module can provide the solid-state power controller with the control power required for operation; and When it is detected that the isolated power supply module is able to provide the control power required for the operation of the solid-state power controller, the isolated power supply module provides the control power required for the operation of the solid-state power controller, and when the isolated power supply module is unable to provide the control power required for the operation of the solid-state power controller, the motherboard power supply module provides the control power required for the operation of the solid-state power controller instead.

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