Low-voltage DC power distribution system for general aircraft power distribution region

Abstract

The invention relates to a low-voltage DC power distribution system for a general aircraft power distribution region, which comprises bus bars, a contactor, a rack, a voltage device and a current measuring device, wherein the bus bars comprise an important bus bar, a general bus bar and an emergency bus bar, a generator directly transmits electric energy to electric equipment of a general aircraftthrough the bus bars, an electro-mechanical contactor, which is driven by an internal logic and a two-way current sensor, is connected between the important bus bar and the general bus bar, and electric leakage circuit breakers are respectively connected between the important bus bar and the emergency bus bar and between the general bus bar and the emergency bus bar so as to perform reverse current protection. The low-voltage DC power distribution system has the characteristics that the isolation between an important region and a non-important region of the aircraft power distribution systemcan be achieved, the overload of the generator and the failure of the whole power supply system are avoided, the safety of the general aircraft is improved, and the like.

Description

technical field [0001] The invention relates to a low-voltage direct-current power distribution system of a general-purpose aircraft, belonging to the field of low-voltage direct-current power supply systems. Background technique [0002] The existing general aircraft power distribution scheme usually uses generator power supply to introduce important bus bars, general bus bars and emergency bus bars for distribution, and the bus bars directly transmit electric energy to electrical equipment. Vital and non-critical areas are not insulated or segregated, such as figure 1 As shown; when a short circuit occurs on one bus bar, it is easy to be transmitted to other bus bars, resulting in the failure of the power system, especially when a short circuit occurs on an important bus bar or an emergency bus bar, it will cause the failure of the entire power system. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies in the prior ar...

AI Technical Summary

Problems solved by technology

Vital and non-critical areas are not insulated or segregated, such as figure 1 As shown; when a short circuit occurs on one bus bar, it is easy to transfer to other bus bars, resulting in the failure of the power system, especially when a short circuit occurs on an important bus bar or an emergency bus bar, it will cause the failure of the entire power system

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