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Airborne power system stability analysis method based on unified large signal model

A power system and analysis method technology, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve problems such as the lack of simple and convenient analysis tools, and achieve the effect of simplifying the design process and optimizing the design

Inactive Publication Date: 2018-04-13
TIANJIN UNIV
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Problems solved by technology

At present, scholars at home and abroad have done a lot of research work on the small-signal stability analysis of the aircraft power system, but there are certain limitations in the small-signal stability analysis, which is limited to the stability of the system near the steady-state operating point. , not suitable for large signal disturbances such as short circuit faults
In addition, considering the stability of the aircraft power system under large and small signal disturbances, there is no simple and convenient analysis tool

Method used

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  • Airborne power system stability analysis method based on unified large signal model
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  • Airborne power system stability analysis method based on unified large signal model

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Embodiment Construction

[0024] Considering the deficiencies of traditional methods for analyzing the stability of aircraft power systems, a method based on average value modeling is proposed to provide a unified large-signal model for aircraft power systems that has better global stability analysis capabilities and is more conducive to solving stability criteria. , to analyze the large and small signal stability of the aircraft power system. The large and small signal stability criteria of the system are solved by using this model, and they are combined into one through analysis to obtain a unified stability criterion. Compared with the traditional method, this method avoids the complicated and cumbersome impedance calculation process, and can still achieve fast and accurate stability judgment of the system. Analysis and optimization design have laid a good foundation.

[0025] Now in conjunction with embodiment, accompanying drawing, the present invention will be further described:

[0026] Step 1...

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Abstract

The invention relates to an airborne power system stability analysis method based on a unified large signal model. The method comprises the steps that first, the unified large signal model of an airplane power system is established; and second, a stability criterion of the airplane power system under the unified large signal model is solved, wherein a large signal stability criterion under the unified large signal model is obtained through solving by the adoption of a mixed potential function theory in combination with a Lyapunov energy function, and the stability criterion is also a small signal stability criterion of the airplane power system.

Description

technical field [0001] The invention relates to the field of stability analysis of aviation power systems, and specifically proposes a unified large-signal model to analyze the small-signal disturbance stability and large-signal disturbance stability of the aircraft power system. Background technique [0002] In order to save energy, reduce costs and improve the performance of airborne systems, modern aircraft increasingly use electric energy to replace hydraulic and pneumatic energy on traditional aircraft as the form of energy supply. As the concept of multi-electricity is gradually integrated into future aircraft design, the power system will be more relied on to ensure the safe operation of the aircraft. [0003] The aircraft power system is mainly responsible for the generation, conversion, distribution of electric energy, and transmission to the load in a proper and safe manner. Multi-electric aircraft must rely on a large number of power electronic conversion devices...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/15G06F30/20
Inventor 车延博徐健梅赵远程周金环
Owner TIANJIN UNIV
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