Method for analyzing small signal stability of aircraft electric power system based on generalized state space averaging

A state-space averaging and power system technology, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve problems such as stability damage and economic loss
CN104820751AInactive Publication Date: 2015-08-05CIVIL AVIATION UNIV OF CHINA
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
CIVIL AVIATION UNIV OF CHINA
Publication Date
2015-08-05
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a method for analyzing small signal stability of an aircraft electric power system based on generalized state space averaging, comprising the steps as follows: establishing a power flow equation of the aircraft electric power system according to the structure of the aircraft electric power system, and determining the steady state working point of the aircraft electric power system; establishing an equivalent circuit for modeling the generalized state space averaging of the aircraft electric power system to obtain a nolinear differential equation of the aircraft electric power system; determining the state variable of the nolinear differential equation, and obtaining a generalized state space averaging model described by a fourier coefficient via Fourier decomposition; judging the small signal stability of the aircraft electric power system via calculating according to the model. The method of the invention realizes the analysis of small signal stability of the aircraft electric power system in different states, and realizes the sensitivity analysis of the small signal stability, which provides valuable suggestions for designing and improving the electric power system in large aircraft manufacturing process, and simultaneously provides reliable operation information of the aircraft electric power system for the flight crew.
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Description

technical field

[0001] The present invention relates to a small-disturbance stability analysis method for an aircraft power system, in particular to a small-disturbance stability analysis method for an aircraft power system based on generalized state space averaging. Through state matrix analysis using Fourier coefficients as state variables, the Realize accurate small-disturbance stability determination of 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, that is, replace the mechanical, hydraulic and pneumatically driven loads directly driven by the engine with electric drives load. The concept of "More Electric Aircraft" thus proposed has become the mainstream trend in the development of the aircraft industry. With the development and maturity of more electric aircraf...

Claims

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