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Ways of Dealing with Power Regeneration onto an Aircraft Electrical Power System Bus
- Aerospace Standard
- AIR6139
- Issued
Downloadable datasets available
Annotation ability available
Sector:
Issuing Committee:
Language:
English
Scope
This SAE Aerospace Information Report (AIR) considers the issue of power regeneration into the EPS of an aircraft. A series of options for dealing with this regenerative power are considered and arranged in categories. Advantages and disadvantages of each solution, including the existing solution, are included. Validated simulation results from representative Electrical Power systems are presented in order to demonstrate how some of the solutions may operate in practice and how power quality can be maintained during regeneration. The impact on changes to the electrical generation system are also highlighted in this AIR, as these changes may have an impact on the solution deployed and the wider impact on the design of engines and auxiliaries.
This AIR reviews concepts and excludes detailed discussions on power system design. These concepts relate to the More Electric Aircraft, cover both AC and DC systems and can be applied to both normal operating conditions or as fault mitigation.
Rationale
The technology move to More Electrical Aircraft power architectures has significantly increased the number of loads which may regenerate electrical energy as well as the overall magnitude of the power generated on aircraft. At the time of writing, electrical specifications for aircraft systems do not allow significant regeneration onto the electrical system. This specification has resulted in all the motor drives with regenerative loads employing a large resistor and associated cooling in order to dissipate the regenerated energy. These resistors have to be rated for worse case operation, resulting in the weight of the equipment being far from optimized.
Recommended Content
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Topic
Data Sets - Support Documents
| Title | Description | Download |
|---|---|---|
| TABLE 1 |
Issuing Committee
The scope of the AE-7 Aerospace Electrical Power and Equipment Committee is dedicated to developing standards and specifications relative to the generation and control, storage, conversion, distribution, load management and utilization of electric power for aerospace vehicles. The Committee also provides a forum for gathering and disseminating electrical power and technical equipment information between users and suppliers.
Reference
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