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Power System Characteristics for More Electric Aircraft
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English
Abstract
It should not be surprising that more electric aircraft must meet significantly more difficult electrical power system requirements than were considered when today’s power distribution systems were being developed. Electrical power, no longer a secondary system, will become a critical element of the primary flight control system. Functional reliability requirements will be extremely stringent and can only be met by controlling element redundancy within a distributed power system. Existing electrical systems were not developed to have both the power system and the control/sensing elements distributed and yet meet the requirements of lightning tolerance and high intensity radio frequency (HIRF).
In addition, the operation of electric actuators involves high transient loading and reverse energy flows. Such phenomena were also not anticipated when power quality was specified for either 270 VDC or 400 Hertz ac power systems. This paper will expand upon the issues and discuss some of the technologies involved in their resolution.
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Citation
Hansen, I., "Power System Characteristics for More Electric Aircraft," SAE Technical Paper 931406, 1993, https://doi.org/10.4271/931406.Also In
References
- EMI/EMC Considerations with respect to Distortion Requirements in Aircraft Electric Power Generating Systems Baker, D. E. SAE 901801
- Lightning Protection of Aircraft Fisher, F. A. Plumer, J. A., NASA Reference Publication 1008 October 1977
- Lightning Test Waveforms and Techniques for Aerospace Vehicles and Hardware SAE AE4L Committee Report June 20 1978 Blue Book
- Test Waveforms and Techniques for Assessing the Effects of Lightning Induced Transients SAE AE4L Committee Report December 15 1981 Yellow Book
- Protection of Aircraft Electrical/Electronic Systems Against the Indirect Effects of Lightning SAE AE4L Committee Report, Revision B January 1989 Orange Book) (Proposed FAA Advisory Circular)
- Certification of Aircraft Electrical/Electronic Systems for Operation in the High Intensity Radiated Fields (HIRF) Environment SAE AE4 Committee Report September 15 1992 Proposed FAA Advisory Circular