Direct current voltage stabilizing circuit of airplane power distribution system, design method and application

Abstract

The invention provides a direct-current voltage stabilizing circuit of an aircraft power distribution system, a design method and application, relates to the technical field of aircraft power distribution, and aims to realize direct-current voltage stabilizing output of the aircraft power distribution system when a load jumps without communication and feedback between the load and a power supply or complicated control means. The direct-current voltage stabilizing circuit comprises a direct-current power supply, a high-frequency inverter circuit, a first coupler, a resonance compensation loop, a second coupler, a rectifying circuit and a load, the direct-current power supply, the high-frequency inverter circuit and the first coupler are connected in sequence; a first end of the resonance compensation loop is in coupling connection with the first coupler, and a second end of the resonance compensation loop is in coupling connection with the second coupler; the second coupler, the rectifying circuit and the load are connected in sequence; the optimal dislocation range of the coupling coil between the first coupler and the resonance compensation loop and the optimal dislocation range of the coupling coil between the second coupler and the resonance compensation loop are both 0-25 cm.

Description

technical field [0001] The invention relates to the technical field of aircraft power distribution, in particular to a DC voltage stabilizing circuit for an aircraft power distribution system without feedback, a design method and an application thereof. Background technique [0002] Multi-electric aircraft that use electric energy instead of hydraulic energy and gas energy can effectively reduce the weight of the aircraft power system, reduce fuel consumption, and improve the reliability and economy of the system. It is an inevitable trend in the development of future aircraft. With the continuous maturity and improvement of power electronic technology, the electrical system of the aircraft is gradually developing in the direction of power electronics. Boeing 787 aircraft has applied a large number of power electronic technologies and devices, including frequency conversion alternators, transformer rectifiers, static Converter, electric brake power supply, etc. However, the...

AI Technical Summary

Problems solved by technology

In essence, this method is to adjust the switch tube according to the goal of reducing the difference between the acquisition voltage and the given voltage, which requires a relatively complex control strategy, and once the communication circuit is disturbed, there may be a delay at the feedback output or even failure to receive the acquisition. signal, so that the output voltage overshoots, and it will gradually stabilize after a few cycles

Therefore, the DC / DC circuit has problems such as complicated control, low reliability and high cost of the feedback communication circuit.

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