AC/DC hybrid electric power system for aeronautical multi-electric engine and design method thereof

Abstract

The invention provides an AC / DC hybrid electric power system for an aeronautical multi-electric engine and a design method thereof. The AC / DC hybrid electric power system for an aeronautical multi-electric engine comprises two parallel built-in variable frequency AC starters / generators; the output end of each built-in variable frequency AC starter / generator is connected with an AC / DC converter; the output end of the AC / DC converter is connected with a DC bus; the DC bus is connected with a DC / AC converter and a bidirectional DC / DC converter; the DC / AC converter is connected with an AC bus is used as an output; the bidirectional DC / DC converter is connected with a storage battery; both the DC bus and the alternating current bus are connected with a load; the AC / DC converter is an autotransformer active filter rectifier; and the DC / AC converter is an inverter adopting the virtual synchronous generator technology. The AC / DC hybrid electric power system for an aeronautical multi-electric engine in the invention solves the problem that the power generation capacity of the conventional power system of the existing aeronautical engine cannot meet the operating requirements of the aeronautical multi-electric engine.

Description

technical field [0001] The invention belongs to the technical field of aviation multi-electric engines, and in particular relates to a power system design method for aviation multi-electric engines. Background technique [0002] The generator on a traditional aero engine realizes power supply by extracting shaft power, which is generally installed on the casing, and has a small power generation capacity. The concept of multi-electric engine proposes to use electric energy to replace traditional secondary energy such as hydraulic energy, pneumatic energy, and mechanical energy. On the one hand, it can reduce the volume and weight of the aero-engine, reduce the complexity of accessories, and also facilitate the maintenance and repair of equipment , Improve the reliability of aero-engine operation. The multi-electric engine adopts a built-in starter / generator, which makes the structure of the engine compact, reduces the windward area, and is conducive to further improving fuel...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the power generation capacity of the traditional power system of the above-mentioned aero-engine cannot meet the requirements of the use of the aero-multi-electric engine, the purpose of the present invention is to provide a design method for the AC-DC hybrid power system of the aero-multi-electric engine

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