In recent years, with the rapid development of electric and electronic
technology, the All-Electric Aircraft (AEA) concept has attracted more and
more attention, which only utilizes the electric power instead of conventional
hydraulic and pneumatic power to supply all the airframe systems. To meet the
power requirements under various flight stages and operating conditions, the
AEA approach has resulted in the current aircraft electrical power generation
capacity up to 1.6 MW. To satisfy the power quality and stability requirements,
the advanced power electronic interfaces and more efficient power distribution
systems must be investigated. Moreover, with the purpose of taking the full
advantages of available electrical power, novel dynamic power distribution
management research and design for an AEA must be carried out.
The main objective of this thesis is to investigate and develop a methodology
of more efficient power distribution management with the purpose of
minimizing the rated power generating capacity and the mass of the electrical
power system (EPS) including the power generation system and the power
distribution system in an AEA. It is important to analyse and compare the
subsistent electrical power distribution management approaches in current
aircraft. Therefore the electrical power systems of A320 and B777, especially
the power management system, will be discussed in this thesis.
Most importantly the baseline aircraft, the Flying Crane is the outcome of the
group design project. The whole project began in March 2008, and ended in
September 2010, including three stages: conceptual design, preliminary
design and detailed design. The dynamic power distribution management
research is based on the power distribution system of the Flying Crane.
The main task of the investigation is to analyse and manage the power usage
among and inside typical airframe systems by using dynamic power
distribution management method. The characteristics and operation process of
these systems will be investigated in detail and thoroughly. By using the
method of dynamic power distribution management, all the electrical
consumers and sub-systems powered by electricity are managed effectively.
The performance of an aircraft can be improved by reducing the peak load
requirement on board. Furthermore, the electrical system architecture,
distributed power distribution system and the dynamic power distribution
management system for AEA are presented. Finally, the mass of the whole
electrical power system is estimated and analysed carefully.
| Identifer | oai:union.ndltd.org:CRANFIELD1/oai:dspace.lib.cranfield.ac.uk:1826/6285 |
| Date | 01 1900 |
| Creators | Xia, Xiuxian |
| Contributors | Lawson, C. P. |
| Publisher | Cranfield University |
| Source Sets | CRANFIELD1 |
| Language | English |
| Detected Language | English |
| Type | Thesis or dissertation, Masters, MSc by Research |
| Rights | © Cranfield University, 2011. All rights reserved. No part of this publication may be reproduced without the written permission of the copyright holder. |
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