Diode rectification of multiphase synchronous generators for aircraft applications

Steven Jordan, Judith Apsley

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

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    Increased electrical loading on aircraft power systems has led to interest in DC electrical networks for aircraft applications. This paper investigates a wound-field synchronous generator and uncontrolled diode rectifier as the DC source and analyses the power quality of the AC and DC sides of the rectifier. The paper gives expressions for voltage and current distortion for a multiphase generator as a function of the number of phases. For a star-connected machine, the power quality on the AC side is shown to deteriorate rapidly as the phase number increases, resulting in increased losses and a higher rating requirement. A delta connection provides better utilisation of the generator; however, at the expense of the fault tolerance. Mathematical models for the multiphase system are developed and the analysis is supported by simulation results; verified through laboratory testing. © 2011 IEEE.
    Original languageEnglish
    Title of host publicationIEEE Energy Conversion Congress and Exposition: Energy Conversion Innovation for a Clean Energy Future, ECCE 2011, Proceedings|IEEE Energy Conver. Congr. Expo.: Energy Conv. Innov. Clean Energy Future, ECCE, Proc.
    Place of PublicationUSA
    Number of pages7
    ISBN (Print)9781457705427
    Publication statusPublished - 2011
    Event3rd Annual IEEE Energy Conversion Congress and Exposition, ECCE 2011 - Phoenix, AZ
    Duration: 1 Jul 2011 → …


    Conference3rd Annual IEEE Energy Conversion Congress and Exposition, ECCE 2011
    CityPhoenix, AZ
    Period1/07/11 → …


    • AC-side; Aircraft applications; Aircraft power systems; Current distortion; DC electrical; DC side; DC sources; Delta connection; Diode rectifier; Electrical loading; Laboratory testing; Multi phase systems; Multi-phase synchronous generator; Phase number; AC generator motors; Aircraft; Computer simulation; DC power transmission; Energy conversion; Fault tolerance; Mathematical models; Synchronous generators; Electric rectifiers


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