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High-voltage direct-current bus bar power control method in airplane high-voltage direct-current power supply system

A technology of high-voltage direct current and power supply system, applied in parallel operation of direct current power supplies, direct current network circuit devices, electrical components, etc., can solve problems such as complicated external hardware wiring, difficult control algorithm improvement and optimization, etc. The effect of reliable power supply

Active Publication Date: 2021-03-02
SHAANXI AVIATION ELECTRICAL
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  • Claims
  • Application Information

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Problems solved by technology

At the same time, the number of auxiliary contacts of the existing high-voltage DC contactors that meet the output power requirements of the aviation power supply system is relatively small. Therefore, to realize complex channel conversion control logic, it is often necessary to expand the auxiliary contacts of the high-voltage DC contactor with the help of external relays. The external hardware wiring is complicated and redundant, and the control logic and algorithm are solidified by hardware, making it difficult to further improve and optimize the control algorithm

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  • High-voltage direct-current bus bar power control method in airplane high-voltage direct-current power supply system
  • High-voltage direct-current bus bar power control method in airplane high-voltage direct-current power supply system
  • High-voltage direct-current bus bar power control method in airplane high-voltage direct-current power supply system

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Embodiment Construction

[0026] The power control method of the high-voltage DC bus bar proposed by the present invention needs to be realized based on relevant hardware, including a bus bar voltage / interconnected bus bar voltage sampling circuit, a signal conditioning circuit, a power system operating normal state and a fault state signal sampling circuit, and an auxiliary contactor contactor. Point sampling circuit, A / D conversion circuit, level conversion circuit, DSP processing unit, communication unit, contactor drive circuit, etc.

[0027] The signal processing and information sampling of analog quantities such as bus voltage and interconnected bus voltage are realized through the bus voltage / interconnected bus voltage sampling circuit, signal conditioning circuit and A / D conversion circuit; through contactor auxiliary contact sampling circuit, power supply The signal sampling circuit of the normal state and fault state of the system and the level conversion circuit realize the discrete informati...

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Abstract

The invention provides a high-voltage direct-current bus bar power control method in an airplane high-voltage direct-current power supply system, which comprises the following steps of: according to voltage information such as bus bar voltage, auxiliary contact state information of a power supply channel contactor and a bus bar connecting contactor, state information and fault information of a power supply channel and priority of a system power supply mode; and the power supply state of the system is judged, and power supply channel conversion is carried out according to the state conversion control flow, so that reliable power supply of electric equipment is guaranteed. According to the state information of the system, power supply channel conversion in the operation process of the systemcan be flexibly and reliably achieved, meanwhile, position exchange in left and right power distribution systems can be achieved, the maintainability of the system is effectively improved, and reliable power supply of electric equipment is guaranteed.

Description

technical field [0001] The invention belongs to aviation electrical design technology, and relates to a method for controlling the power of a high-voltage direct-current bus bar in an aircraft high-voltage direct-current power supply system. Background technique [0002] At present, the conversion control of the power supply channel in the aircraft high-voltage DC power supply system mainly relies on the hardware interlock of the auxiliary contacts of the contactor. At the same time, the number of auxiliary contacts of the existing high-voltage DC contactors that meet the output power requirements of the aviation power supply system is relatively small. Therefore, to realize complex channel conversion control logic, it is often necessary to expand the auxiliary contacts of the high-voltage DC contactor with the help of external relays. The external hardware wiring is complicated and redundant, and the control logic and algorithm are solidified by hardware, making it difficul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J1/10
CPCH02J1/109
Inventor 姚贞羽邸庆龙王晓红赵喜洋陈复盼
Owner SHAANXI AVIATION ELECTRICAL
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