One of the most critical systems in any aerospace vehicle is the electrical power system (EPS). Comprising energy generation, energy storage, power distribution, and power management, EPS is relied upon by every major subsystem for proper operation. To meet the safety requirements of aeronautics and space systems – and provide for their reliability, maintainability, and supportability – advanced health management (HM) techniques for EPS are required. A detailed review of the major EPS component failure modes shows that power generation and energy storage components generally employ some basic HM techniques to estimate and manage remaining life. However, power management and distribution (PMAD) components and systems employ almost no on‐board HM techniques. A survey of current aerospace vehicles and platforms will show that power HM systems have employed simple performance and environmental monitoring to provide indications of possible component and subsystem failures, and used redundant components as a “safety net” when failures do occur. More advanced methods that detect fault locations in wiring are used for maintenance purposes and not as an on‐board safety system. To move beyond this, future power HM systems need to be “intelligent” and operate autonomously. This means that they need to be able to detect and isolate incipient faults, mitigate failures, or predict impending failures so that mitigating actions can be taken. The historical method of adding HM capabilities after a system has been developed leads to high cost for implementation, limited capabilities, and low reliability in operation. Future aerospace power systems need to incorporate HM capability early in the design cycle for maximum benefit.


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    Title :

    Electrical Power Health Management



    Published in:

    Publication date :

    2011-07-15


    Size :

    15 pages




    Type of media :

    Article/Chapter (Book)


    Type of material :

    Electronic Resource


    Language :

    English




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