Defining safe operating voltages for aerospace electrical systems

I. Cotton, A. Nelms, M. Husband

    Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

    Abstract

    Increased electrical power demands are being experienced on the new generation of aircraft due to an increased reliance on electrical technology such as air conditioning, de-icing systems and electrical flight control actuation. Sustaining the transmission of hundreds of kilowatts of electrical power at low voltages, typical around 115V, is not feasible owing to the penalties incurred due to high cable weights and issues relating to voltage drop. The use of higher voltages would reduce system weight but comes with a penalty in the increased likelihood of electrical discharge within the power system. This paper details studies of systems used to transmit power in aircraft. The studies examine the voltages at which systems could be used without the existence of partial discharge. This is done from a theoretical standpoint but is based on the results of tests of typical insulation systems. These tests have been carried out in an environmental chamber that can simulate an aircraft at altitude. It is shown that an increase to ever higher voltages does not lead to a continuous reduction in the power transfer to weight ratio of cabling systems. The optimum voltage is shown to depend on a number of factors. ©2007 IEEE.
    Original languageEnglish
    Title of host publication2007 Electrical Insulation Conference and Electrical Manufacturing Expo, EEIC 2007|Electr. Insul. Conf. Electr. Manuf. Expo, EEIC
    Pages67-71
    Number of pages4
    DOIs
    Publication statusPublished - 2007
    Event2007 Electrical Insulation Conference and Electrical Manufacturing Expo, EEIC 2007 - Nashville, TN
    Duration: 1 Jul 2007 → …

    Conference

    Conference2007 Electrical Insulation Conference and Electrical Manufacturing Expo, EEIC 2007
    CityNashville, TN
    Period1/07/07 → …

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