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Electronics 2018, 7(9), 187; https://doi.org/10.3390/electronics7090187

Decentralized Power Management for Electrical Power Systems in More Electric Aircrafts

1
School of Electrical Engineering, Chungbuk National University, Cheongju 28644, Korea
2
Electronic Robot Engineering, Busan University of Foreign Studies, Busan 46234, Korea
3
Department of Electrical Engineering, Hanyang University, Seoul 04763, Korea
*
Author to whom correspondence should be addressed.
Received: 17 July 2018 / Revised: 24 August 2018 / Accepted: 7 September 2018 / Published: 10 September 2018
(This article belongs to the Special Issue Renewable Electric Energy Systems)
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Abstract

In order to implement reliable and flexible power management among energy sources, a decentralized power management approach for electrical power systems (EPSs) in the more electric aircraft (MEA) is studied. Considering the increased use of electrical power for various functions, the performance of MEA would be determined by the design and operation of the EPS. By using a virtual impedance that includes both a resistive term and an inductive term, autonomous power sharing is realized. Because of the frequency dependence in the virtual impedance, different power sharing ratios between steady state and transient state can be considered. Not only the operation of various power sources is coordinated without supervision of a centralized controller, but also the operation profile of each source can be adjusted to meet output characteristics of each source. To demonstrate the effectiveness of the proposed approach, a series of simulations that consider various virtual impedance configurations were conducted. The proposed approach contributes to a higher level of operational flexibility, while enabling reliable and cost-effective management of MEAs. View Full-Text
Keywords: DC micro-grid; virtual impedance; virtual inductance; more electric aircraft DC micro-grid; virtual impedance; virtual inductance; more electric aircraft
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Kim, M.; Lee, S.G.; Bae, S. Decentralized Power Management for Electrical Power Systems in More Electric Aircrafts. Electronics 2018, 7, 187.

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