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High-voltage direct current solid state power controller

A solid-state power, high-voltage direct current technology, applied in the protection of overcurrent, emergency protection circuit devices for limiting overcurrent/overvoltage, electrical components, etc., can solve the problem of high-altitude reversing contacts of brush motor Arc breaking, restricting system development and other issues, to achieve the effect of meeting the requirements of connection and short circuit protection

Active Publication Date: 2013-06-19
SHANGHAI AVIATION ELECTRIC
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the development of high-voltage DC power supply systems, there are two key problems: the problem of high-altitude commutation of brushed motors and the problem of high-altitude arc breaking of contact appliances
These problems seriously restrict the development of the system

Method used

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  • High-voltage direct current solid state power controller
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Embodiment Construction

[0016] The present invention will be described in detail below in conjunction with accompanying drawing and embodiment 。

[0017] Such as figure 1 Shown is the overall functional block diagram of the embodiment of the 270V DC solid-state power controller of the present invention. The DC solid-state power controller includes a MOSFET tube 23, the drain of the MOSFET tube 23 is connected to the voltage input terminal 22, and the source of the MOSFET tube 23 is connected to the voltage output terminal 26 through a sampling resistor 25. It is characterized in that the MOSFET tube The gate of 23 is connected to the control signal output terminal of logic unit 11 through MOS tube drive circuit 18, and the current limiting module 30 is connected between the source and the drain of this MOSFET tube 23, and the control terminal of this current limiting module 30 is connected with logic unit 11. The current limiting signal terminal 16 of the unit 11 is connected, and both ends of the ...

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Abstract

The invention discloses a control and protection technology of a high-voltage direct current solid state power controller and is applied to an electromechanical control system and an airplane secondary power distribution system. Rigid lines are adopted to control turn-on and turn-off of the solid state power controller, and a communication bus is used for inquiring and controlling a running status of a direct-current load. The solid state power controller has the functions of capacitive load and short circuit judgment. The output end is provided with a fly-wheel diode and a safety protection circuit, and therefore the solid state power controller is enabled to have strong capacitive and inductive load capacity, and the output voltage is smaller than a safe voltage when the solid state power controller is powered off. The 270V high-voltage direct current solid state power controller adopts an enhancement type metallic-oxide-semiconductor field effect transistor (MOSFET) to form a power switch. The high-voltage direct current solid state power controller has the advantages of being short in turn-on and turn-off time, free from contact point, free from interference, high in reliability, long in service life and the like.

Description

technical field [0001] The invention is a 270V high-voltage DC solid-state power controller, which can be used in electromechanical control systems and aircraft secondary power distribution systems. Background technique [0002] The high-voltage DC power supply system is light in weight and high in efficiency, and it is easy to realize uninterrupted power supply and redundant power supply, which improves the reliability and maintainability of the system, reduces the weight of the system, improves the quality of power supply, and is more suitable for high-tech applications such as electric drive systems. The power requirements of electrical equipment are convenient for the transition to multi-electric and all-electric aircraft, and low-voltage direct current and 400Hz constant-frequency alternating current can be obtained through the converter to meet the needs of various electrical equipment. Therefore, 270V high-voltage direct current power supply is the future of aircraft p...

Claims

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Application Information

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IPC IPC(8): H02H3/08H02H9/04
Inventor 张志林
Owner SHANGHAI AVIATION ELECTRIC
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