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Evaluation of Capacitor Lifetime Based on EMI and Switch Characteristics

Doran, John Patrick, II
http://orcid.org/0000-0002-2729-4569
http://rave.ohiolink.edu/etdc/view?acc_num=miami156149425240045

Abstract Details

2019, Master of Science, Miami University, Computational Science and Engineering.
Aircraft electrical components are often misdiagnosed leading to high maintenance and upkeep costs. One potential method of increasing the accuracy of diagnostics is to use the system’s Electromagnetic Interference (EMI) to evaluate the systems condition. One of the least reliable components in electrical systems is capacitors. DC link capacitors are used as load-balancing energy storage devices used to mitigate voltage spikes and current surges subjecting them to significant stress. A model of a 3-phase inverter is analyzed to establish the impact of a capacitor’s age on its EMI. With the push for higher power in aircraft systems, the use of Wide BandGap (WBG) has increased. WBG devices are being used due their small size, greater thermal conductivity and efficiency. WBG devices offer higher switching frequencies, which can decrease the size of needed passive filtering components, thus saving in system size and cost. The faster voltage and current transients of WBG devices cause higher order harmonics in the system which may impact passive component lifetimes. Cuk and SEPIC converters utilizing both Si and SiC devices are used to evaluate the impact that WBG technology could cause in the aging of metalized film capacitors.
Mark Scott (Advisor)
Donald Ucci (Committee Member)
David Hartup (Committee Member)
82 p.
Electrical Engineering
Capacitor Lifetime; EMI; WBG; Diagnostics; Cuk; SEPIC;

Recommended Citations

Citations

  • Doran, II, J. P. (2019). Evaluation of Capacitor Lifetime Based on EMI and Switch Characteristics [Master's thesis, Miami University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=miami156149425240045

    APA Style (7th edition)

  • Doran, II, John. Evaluation of Capacitor Lifetime Based on EMI and Switch Characteristics . 2019. Miami University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=miami156149425240045.

    MLA Style (8th edition)

  • Doran, II, John. "Evaluation of Capacitor Lifetime Based on EMI and Switch Characteristics ." Master's thesis, Miami University, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=miami156149425240045

    Chicago Manual of Style (17th edition)

miami156149425240045
540
© 2019, some rights reserved.Creative Commons License Evaluation of Capacitor Lifetime Based on EMI and Switch Characteristics by John Patrick Doran II is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License. Based on a work at etd.ohiolink.edu.
This open access ETD is published by Miami University and OhioLINK.