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Energies 2017, 10(11), 1739; doi:10.3390/en10111739

Stability Analysis of Aircraft Power Systems Based on a Unified Large Signal Model

1
Key Laboratory of Smart Grid of Ministry of Education, Tianjin University, Tianjin 300072, China
2
Department of Power Consumption, China Electric Power Research Institute, Beijing 100192, China
3
Department of Electrical Engineering, Northeast Electric Power University, Jilin 132012, China
4
China Energy Equipment CO., LTD. 2, Beijing 100044, China
*
Author to whom correspondence should be addressed.
Received: 5 September 2017 / Revised: 25 September 2017 / Accepted: 26 October 2017 / Published: 30 October 2017
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Abstract

Complex power electronic conversion devices, most of which have high transmission performance, are important power conversion units in modern aircraft power systems. However, these devices can also affect the stability of the aircraft power system more and more prominent due to their dynamic and nonlinear characteristics. To analyze the stability of aircraft power systems in a simple, accurate and comprehensive way, this paper develops a unified large signal model of aircraft power systems. In this paper, first the Lyapunov linearization method and the mixed potential theory are employed to analyze small signal and large signal stability, respectively, and then a unified stability criterion is proposed to estimate small and large signal stability problems. Simulation results show that the unified large signal model of aircraft power systems presented in this paper can be used to analyze the stability problem of aircraft power systems in an accurate and comprehensive way. Furthermore, with simplicity, universality and structural uniformity, the unified large signal model lays a good foundation for the optimal design of aircraft power systems. View Full-Text
Keywords: aircraft power system; unified large signal model; small signal stability; large signal stability; Lyapunov linearization method; mixed potential theory aircraft power system; unified large signal model; small signal stability; large signal stability; Lyapunov linearization method; mixed potential theory
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Che, Y.; Xu, J.; Shi, K.; Liu, H.; Chen, W.; Yu, D. Stability Analysis of Aircraft Power Systems Based on a Unified Large Signal Model. Energies 2017, 10, 1739.

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