Airborne power supply control device and control method

Abstract

The invention provides an airborne power supply control device and control method, and belongs to the technical field of airborne power supply systems. The airborne power supply control device is connected with external upstream equipment and an electric equipment assembly, receives alternating current power supply output by an aircraft generator, and converts the alternating current power supply into multiple paths of steady-state direct current power supplies which can be used by multiple paths of electric equipment on the aircraft through rectification, modulation and voltage stabilization; carrying out information interaction with upstream equipment, and transmitting an enabling instruction of multiple paths of power distribution equipment; real-time sampling and monitoring are carried out on detection points through which currents of alternating current power supply input, modulated direct current output and power distribution equipment end direct current output pass, and abnormal sampling currents or voltages are isolated; the system can receive input of an alternating current power supply on a receiver, independently control on-off of each device of an airborne subsystem of an aircraft according to an instruction of an upstream device, improve input power supply quality and reasonably distribute and transmit electric energy to each device, and has independent monitoring capability of each sampling point on a current transmission path; the single-point cut-off capability under the fault condition can be realized, and the influence of the fault spreading to the system is effectively isolated.

Description

Technical Field

[0001] The present invention belongs to the technical field of airborne power supply systems, and in particular relates to an airborne power supply control device and a control method. Background Art

[0002] At present, most of the airborne equipment on the aircraft is directly connected to the power bus of the aircraft power distribution system as the input power. With the development trend of aircraft electrification and the increase in the equipment and power consumption of various onboard subsystems, the traditional power conversion board with only power filtering and voltage stabilization output can no longer meet the requirements of large-scale equipment power distribution.

[0003] Therefore, it is necessary to design an onboard power supply control module that can receive the input of the onboard AC power supply, independently control the on-off of each device of the aircraft's onboard subsystem according to the instructions of the upstream equipment, improve the input power supply quality and reasonably distribute the electric energy to each device. It has the ability to independently monitor each sampling point on the current transmission path, can achieve single-point disconnection capability under fault conditions, and effectively isolate the impact of the fault spreading to the system. Summary of the invention

[0004] In order to solve the technical problem that the relevant technology cannot meet the power distribution requirements of large-scale equipment, the present invention provides an airborne power supply control device and a control method, which can convert the onboard AC power input into a DC power supply input for the airborne subsystem, and realize power filtering, conversion, modulation and voltage stabilization through a DC-to-AC power modulation module. Each device can be independently connected and disconnected according to the instructions of the upstream device, and the voltage and current values ​​of each sampling point can be effectively monitored. The output enable can be disconnected in time for overvoltage or overcurrent faults of each output device, thereby improving the power supply quality and establishing the power distribution and control management capabilities of the airborne subsystem.

[0005] In a first aspect, an airborne power supply control device is provided, wherein the airborne power supply control device is connected to external upstream equipment and electrical equipment components, wherein the device receives AC power from the output of an aircraft generator, and converts the AC power supply into a multi-channel steady-state DC power supply that can be used by multiple electrical equipment on board after rectification, modulation and voltage stabilization; exchanges information with upstream equipment to transmit enable instructions for multiple power distribution equipment; and samples and monitors detection points through which currents of AC power supply input, modulated DC output, and DC output at the power distribution equipment end pass in real time, and isolates abnormal sampled currents or voltages.

[0006] The present invention can receive the input of the onboard AC power supply, and independently control the on-off of each device of the aircraft's onboard subsystem according to the instructions of the upstream device, thereby improving the input power supply quality and reasonably distributing and transmitting the electric energy to each device. It has the ability to independently monitor each sampling point on the current transmission path, can realize the single-point disconnection capability under fault conditions, and effectively isolate the impact of the fault spreading to the system.

[0007] Optionally, the airborne power supply control device includes: an AC / DC power supply modulation module, a sampling detection module, a monitoring and control module, a bus communication module, a power distribution output enabling module, and a power distribution equipment enabling component;

[0008] The AC / DC power modulation module is respectively connected to the AC power input, the power distribution output enabling module, and the sampling detection module on the machine;

[0009] The power distribution output enabling module is connected to the monitoring and control module and the power distribution equipment enabling component respectively;

[0010] The power distribution equipment enabling component is respectively connected with the sampling detection module, the power consumption equipment component, and the monitoring and control module;

[0011] The sampling and detection module is connected with the AC power input, monitoring and control module on board;

[0012] A monitoring and control module connected to the bus communication module;

[0013] Bus communication module, connected with upstream equipment;

[0014] The AC / DC power modulation module receives the AC power from the aircraft generator output, and converts it into a steady-state DC power supply after rectification, modulation and voltage stabilization, which serves as the input of the power distribution output enable module and the sampling detection module;

[0015] A bus communication module receives monitoring information sent by the monitoring and control module and sends it to the upstream device, and receives the power distribution equipment enabling instruction sent by the upstream device and sends it to the monitoring and control module;

[0016] The sampling detection module samples and monitors the detection points where the current of the AC power input, the modulated DC output, and the DC output of the power distribution equipment passes in real time, and isolates abnormal sampling current or voltage;

[0017] The monitoring and control module combines the enabling instructions of the multi-channel power distribution equipment and the monitoring results of the sampling detection module, controls the on and off of the power distribution output enabling module based on the power distribution output enabling instruction, and controls the on and off of the power distribution equipment enabling component based on the power distribution equipment enabling instruction;

[0018] The power distribution output enabling module outputs direct current to the multiple power distribution output ports in the power distribution device enabling component, and the power distribution device enabling component outputs direct current to multiple devices in the power consumption device component, wherein the multiple power distribution output ports are in one-to-one correspondence with the multiple devices.

[0019] The present invention can realize the isolation and independence of circuits of multi-channel power distribution outputs, and can prevent faults from spreading to other output terminals of the onboard power supply and equipment when the functions are normal.

[0020] Furthermore, the monitoring and control module is also used to output valid indication information of a certain path when the voltage and current of a certain detection point are within the normal range, otherwise output invalid indication information of a certain path. In this way, it is convenient to realize the monitoring and judgment of the voltage and current of the key points of the current transmission path as the input condition of fault isolation.

[0021] Furthermore, the monitoring and control module is also used to set the power distribution output enable command to be on when the AC power input on the machine is valid and the DC output of the AC / DC power modulation module is valid, otherwise it is off. The power distribution output enable control function is realized, and the power distribution output enable command is automatically cut off when the input or output of the AC / DC module is abnormal, so as to prevent the fault from spreading to the power distribution equipment enabling component.

[0022] Furthermore, the monitoring and control module is also used for setting the DC output of a certain power-consuming device component from the power distribution device enabling component to the power-consuming device component to be connected when the power distribution output enabling module is connected, the power distribution device enabling instruction is connected, and the DC output of a certain power distribution device enabling component is valid, otherwise it is disconnected. The power distribution device enabling control function is realized, and the power distribution output enabling of the corresponding power-consuming device is automatically cut off when any output port of the power distribution device enabling component is abnormal, so as to avoid the spread of faults between power distribution devices.

[0023] Optionally, the AC / DC power modulation module includes: an EMI lightning filter, an AC / DC conversion module and a DC / DC conversion module connected in sequence.

[0024] Optionally, the monitoring and control module is an FPGA module.

[0025] Optionally, the bus communication module is a serial peripheral interface SPI bus chip.

[0026] Optionally, the power distribution output enabling module is a solid-state power controller SSPC module; and the power distribution equipment enabling component is an SSPC module component composed of a plurality of SSPC modules.

[0027] In a second aspect, an airborne power supply control method is provided, which is used in any device described in the first aspect, and the method includes:

[0028] Interact with upstream devices to transmit enabling instructions for multi-channel power distribution devices;

[0029] Receives AC power from the aircraft generator output, and converts it into multiple steady-state DC power supplies that can be used by multiple electrical equipment on board after rectification, modulation and voltage stabilization;

[0030] The detection points through which the current of AC power input, modulated DC output, and DC output at the power distribution equipment end passes are sampled and monitored in real time, and abnormal sampled current or voltage is isolated.

[0031] The beneficial effects of the present invention are at least:

[0032] The device of the present invention can be directly connected to the AC power input on the aircraft to perform filtering, conversion, modulation and voltage stabilization, thereby improving the power quality required by electrical equipment; it has the ability to independently supply power to and manage each device of the airborne subsystem. In normal operation, it can receive the power distribution equipment enable command sent by the upstream device to control the power-on status of multiple devices; under abnormal conditions, it can cut off the abnormal current or voltage output according to the sampling results of the monitoring points configured on the current transmission path, effectively isolate the fault and prevent the fault from spreading to the aircraft or other equipment; in the event of an overload, it can disconnect non-critical loads according to the instructions sent by the upstream device to ensure power supply to critical loads. The present invention can automatically manage the power supply of airborne subsystems and effectively improve the safety of power consumption of airborne subsystems. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a structural principle diagram of the present invention;

[0034] Figure 2 It is a specific implementation diagram of the present invention;

[0035] Figure 3 It is the on-off logic of SSPC module 0;

[0036] Figure 4 It is the on / off logic of a single SSPC module in the SSPC module assembly. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the present invention more clear, the embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other arbitrarily without conflict.

[0038] See also Figure 1An embodiment of the present invention provides an airborne power control device, including an AC / DC power modulation module, a sampling detection module, a monitoring and control module, a bus communication module, a power distribution output enabling module, and a power distribution device enabling component. The power control module is connected to an external upstream device and a power-consuming device component.

[0039] The AC / DC power modulation module is respectively connected to the on-board AC power input, power distribution output enabling module and sampling detection module; the power distribution output enabling module is respectively connected to the AC / DC power modulation module, the monitoring and control module and the power distribution equipment enabling component; the power distribution equipment enabling component is respectively connected to the power distribution output enabling module, the sampling detection module and the power consumption equipment component; the sampling detection module is respectively connected to the on-board AC power input, AC / DC power modulation module and the power distribution equipment enabling component; the monitoring and control module is respectively connected to the sampling detection module, the power distribution output enabling module, the power distribution equipment enabling component and the bus communication module; the bus communication module is respectively connected to the monitoring and control module and the upstream equipment; the upstream equipment is connected to the bus communication module; the power consumption equipment component is connected to the enabling component.

[0040] This power control module receives AC power from the aircraft generator output, and converts it into multi-channel steady-state DC power for use by multiple electrical equipment on board after rectification, modulation and voltage stabilization; it exchanges information with upstream equipment and transmits enable instructions for multiple power distribution equipment; it can perform full-coverage real-time sampling and monitoring of detection points where current passes, such as AC power input, modulated DC output, and DC output at the distribution equipment end, and can quickly cut off the fault point for abnormal sampled current or voltage. The circuits of multiple power distribution outputs are isolated and independent from each other, and when the functions are normal, it can prevent the fault from spreading to other output ends of the onboard power supply and equipment.

[0041] The AC / DC power modulation module is used for the input of AC power on the receiver, and completes the filtering, conversion, modulation and voltage stabilization of the power input. The modulated DC power is used as the input of the power distribution output enable module and the sampling detection module.

[0042] The power distribution output enable module is used to receive the electric energy output from the AC / DC power modulation module. It has the function of current on and off. It changes the on and off state through the power distribution output enable instruction of the monitoring and control module. In the on state, the output switch is turned on to supply power to the power distribution equipment enabling component, and in the off state, the power distribution equipment enabling component is powered off.

[0043] The power distribution equipment enabling component is used to receive the electric energy output by the power distribution output module. It has the function of turning on and off the current of multiple power-consuming equipment. It changes the on and off status of the multiple power-consuming equipment components through the power distribution equipment enabling instructions of the monitoring and control module, and can independently control the on and off of the current of each circuit and the power on and off of each power-consuming equipment.

[0044] The sampling and detection module is used to receive and collect the current and voltage of the AC power input on the machine, the current and voltage output by the AC / DC power modulation module, and the multi-channel current and voltage output by the distribution equipment enabling component, and convert them into DC voltage form to enter the monitoring and control module as an input condition for determining whether the current or voltage is abnormal.

[0045] The monitoring and control module is used to receive the current and voltage of the onboard AC power input after sampling and demodulation by the sampling detection module, the current and voltage output by the AC / DC power modulation module, and the multi-channel current and voltage output by the distribution equipment enabling component (a total of 3 detection points), and perform voltage or current abnormality monitoring. In combination with the distribution equipment enabling instruction sent by the receiving bus communication module, the distribution output enabling instruction and the distribution equipment enabling instruction are independently set to on and off.

[0046] The bus communication module is used to receive the monitoring information sent by the monitoring and control module and send it to the upstream module, and receive the distribution equipment enabling instruction sent by the upstream module and send it to the monitoring and control module.

[0047] For the monitoring function of the monitoring and control module, when the voltage and current of a certain detection point are within the normal range, the output of that certain channel is valid, otherwise the output of that certain channel is invalid.

[0048] For the power distribution output enable control function of the monitoring and control module, when the onboard AC power input is valid and the DC output of the AC / DC power modulation module is valid, the power distribution output enable instruction is set to be connected, otherwise it is disconnected.

[0049] The power distribution equipment enabling control function of the monitoring and control module is that, for a certain power equipment component, when the power distribution output enabling module is turned on and the enabling instruction of a certain power distribution equipment is turned on and the DC output of a certain power distribution equipment enabling component is valid, the enabling instruction of a certain power distribution equipment is set to be turned on, otherwise it is disconnected.

[0050] In one embodiment, see Figure 2 The AC / DC power modulation module may include an EMI lightning filter, an AC / DC conversion module and a DC / DC conversion module connected in sequence.

[0051] The sampling detection module may be a sampling detection circuit;

[0052] The monitoring and control module may be an FPGA module;

[0053] The bus communication module may be a SPI bus chip;

[0054] The power distribution output enabling module may be a solid-state power controller SSPC module 0;

[0055] The power distribution equipment enabling component may be a SSPC module component composed of a plurality of SSPC modules;

[0056] The on-off logic of SSPC module 0 corresponds to the monitoring function of the monitoring and control module of the FPGA module;

[0057] The on-off logic of the FPGA module for the SSPC module components corresponds to the power distribution output enable control function of the monitoring and control module;

[0058] The monitoring logic of the FPGA module corresponds to the power distribution equipment enabling control function of the monitoring and control module.

[0059] Specifically, in one embodiment, an airborne power control device may include an EMI lightning filter, an AC / DC conversion module, a DC / DC conversion module, a sampling detection circuit, an FPGA module, an SPI bus chip, an SSPC module 0, and an SSPC module component.

[0060] The AC power input on the EMI lightning filter receiver can reduce electromagnetic interference and noise and enhance lightning protection. The filtered AC power is used as the input of the AC / DC conversion module, which converts the AC power into DC power as the input of the DC / DC conversion module. The DC / DC module stabilizes the voltage and serves as the total power distribution output.

[0061] The sampling detection circuit collects the current and voltage of the AC power input, DC / DC conversion module DC output, and all DC output points of the SSPC module components on the machine, and sends them to the FPGA module.

[0062] The monitoring logic of the FPGA module is as follows: it receives the current and voltage of each sampling point. When the current exceeds the normal current range or the voltage exceeds the normal voltage range, the monitoring result of the sampling point is set to "invalid", otherwise it is "valid".

[0063] The FPGA module sends monitoring information to the SPI bus module and receives the power distribution device enable signal sent by the SPI bus chip, which is used as the input of the on-off logic of the power-consuming device components.

[0064] The SPI bus chip has the capability of simple, reliable and high-speed communication. It uploads the monitoring information sent by the FPGA module to the upstream device and sends the power distribution device enable instruction of the upstream device to the FPGA module.

[0065] The FPGA module can control the on and off of the SSPC module 0 and execute the enabling function of the output end of the DC / DC conversion module.

[0066] SSPC module 0 uses a solid-state controller switch to receive the DC output of the DC / DC conversion module and the on / off instructions of SSPC module 0 sent by the FPGA module, which can achieve microsecond-level on / off control, and the output is connected to the SSPC module components.

[0067] The SSPC module assembly is composed of multiple solid-state controller switches (including SSPC module 1, SSPC module 2...SSPC module n), receives the DC output of SSPC module 0, and is connected to the electrical equipment assemblies one by one, and can directly control the on and off of each electrical equipment in the electrical equipment assembly.

[0068] The on / off logic of FPGA module to SSPC module 0 is as follows, see Figure 3 , the on-off logic of SSPC module 0 is as follows:

[0069] a) Initialize SSPC module 0 to “disconnect”;

[0070] b) When the AC power input on the aircraft is "valid" and the DC output of the DC / DC conversion module is "valid", set SSPC module 0 from "off" to "on";

[0071] c) When the AC power input on the aircraft is "invalid" or the DC output of the DC / DC conversion module is "invalid", set the SSPC module 0 from "on" to "off".

[0072] The on / off logic of the FPGA module to the SSPC module components is as follows. Take any SSPC module X as an example. Figure 4 , the on-off logic of a single SSPC module in the SSPC module assembly is as follows:

[0073] a) Initialize SSPC module x to “disconnect”;

[0074] b) When SSPC module 0 is "on" and the upstream device's power distribution device x enable is "on" and SSPC module x DC output is "valid", set SSPC module x from "off" to "on";

[0075] c) When the power distribution device x of the upstream device is enabled to "disconnect" or the DC output of the SSPC module x is "invalid", set the SSPC module x from "on" to "off".

[0076] An embodiment of the present invention further provides an airborne power supply control method, which is used in the airborne power supply control device described in the embodiment of the present invention. The method includes:

[0077] Step 1: Exchange information with upstream equipment to transmit enabling instructions for multiple power distribution equipment;

[0078] Step 2: receiving AC power from the aircraft generator output, and converting it into a multi-channel steady-state DC power supply that can be used by multiple electrical devices on board after rectification, modulation and voltage stabilization;

[0079] Step 3: Perform real-time sampling and monitoring of detection points where the current of the AC power input, the modulated DC output, and the DC output of the power distribution equipment passes through, and isolate abnormal sampled current or voltage.

[0080] The power control module and its working logic proposed in the present invention have been realized, which can automatically manage the load, and can also perform unloading control and power distribution reconstruction of power-consuming equipment according to instructions, ensuring the power supply of important loads, while also realizing the protection of external input power. After product development and physical verification, the present invention can be used as a power supply and distribution management module for airborne subsystems, effectively improving power safety and automatic reconstruction capabilities.

[0081] The above only expresses the implementation methods of the present application, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present application, which all belong to the protection scope of the present application. In addition, the parts that are not detailed in this application are all conventional technologies.

Claims

1. An airborne power supply control device, characterized in that: The onboard power supply control device is connected to external upstream equipment and electrical equipment components. The device receives AC power from the output of the aircraft generator, and converts it into a multi-channel steady-state DC power supply that can be used by multiple electrical equipment on board after rectification, modulation and voltage stabilization; exchanges information with upstream equipment to transmit enable instructions for multiple distribution equipment; and samples and monitors the detection points through which the current of the AC power input, the modulated DC output, and the DC output of the distribution equipment passes in real time, and isolates abnormal sampled current or voltage.

2. The device according to claim 1, characterized in that: The airborne power supply control device includes: an AC / DC power supply modulation module, a sampling detection module, a monitoring and control module, a bus communication module, a power distribution output enabling module, and a power distribution equipment enabling component; The AC / DC power modulation module is respectively connected to the AC power input, the power distribution output enabling module, and the sampling detection module on the machine; The power distribution output enabling module is connected to the monitoring and control module and the power distribution equipment enabling component respectively; The power distribution equipment enabling component is respectively connected with the sampling detection module, the power consumption equipment component, and the monitoring and control module; The sampling and detection module is connected with the AC power input, monitoring and control module on board; A monitoring and control module connected to the bus communication module; Bus communication module, connected with upstream equipment; The AC / DC power modulation module receives the AC power from the aircraft generator output, and converts it into a steady-state DC power supply after rectification, modulation and voltage stabilization, which serves as the input of the power distribution output enable module and the sampling detection module; A bus communication module receives monitoring information sent by the monitoring and control module and sends it to the upstream device, and receives the power distribution equipment enabling instruction sent by the upstream device and sends it to the monitoring and control module; The sampling detection module samples and monitors the detection points where the current of the AC power input, the modulated DC output, and the DC output of the power distribution equipment passes in real time, and isolates abnormal sampling current or voltage; The monitoring and control module combines the enabling instructions of the multi-channel power distribution equipment and the monitoring results of the sampling detection module, controls the on and off of the power distribution output enabling module based on the power distribution output enabling instruction, and controls the on and off of the power distribution equipment enabling component based on the power distribution equipment enabling instruction; The power distribution output enabling module outputs direct current to the multiple power distribution output ports in the power distribution device enabling component, and the power distribution device enabling component outputs direct current to multiple devices in the power consumption device component, wherein the multiple power distribution output ports are in one-to-one correspondence with the multiple devices.

3. The device according to claim 1, characterized in that: The monitoring and control module is also used to output valid indication information of a certain route when the voltage and current of a certain detection point are within a normal range, otherwise output invalid indication information of a certain route.

4. The device according to claim 1, characterized in that: The monitoring and control module is also used to set the power distribution output enable instruction to be connected when the onboard AC power input is valid and the DC output of the AC / DC power modulation module is valid, otherwise it is disconnected.

5. The device according to claim 1, characterized in that: The monitoring and control module is also used to set the DC output of a certain power-consuming equipment component from the power distribution equipment enabling component to the power-consuming equipment component to be connected when the power distribution output enabling module is connected and the enabling instruction of a certain power distribution equipment is connected, and the DC output of a certain power distribution equipment enabling component is valid, otherwise it is disconnected.

6. The device according to claim 1, characterized in that: The AC / DC power modulation module includes: an EMI lightning filter, an AC / DC conversion module and a DC / DC conversion module which are connected in sequence.

7. The device according to claim 1, characterized in that: The monitoring and control module is an FPGA module.

8. The device according to claim 1, characterized in that: The bus communication module is a serial peripheral interface SPI bus chip.

9. The device according to claim 1, characterized in that: The power distribution output enabling module is a solid-state power controller SSPC module; the power distribution equipment enabling component is an SSPC module component composed of a plurality of SSPC modules.

10. An airborne power supply control method, characterized in that: For use in the device according to any one of claims 1 to 9, the method comprises: Interact with upstream devices to transmit enabling instructions for multi-channel power distribution devices; Receives AC power from the aircraft generator output, and converts it into multiple steady-state DC power supplies that can be used by multiple electrical equipment on board after rectification, modulation and voltage stabilization; The detection points through which the current of AC power input, modulated DC output, and DC output at the power distribution equipment end passes are sampled and monitored in real time, and abnormal sampled current or voltage is isolated.

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