Hewitt, D., Green, J., Davidson, J. et al. (2 more authors) (2016) Meaurement of Electrical Parameters of Electrolytic Capacitors Using Real-World Drive Waveforms for State-of-Health Determination. In: 9th International Workshop on Impedance Spectroscopy. 9th International Workshop on Impedance Spectroscopy, 26-28 Sep 2016, Chemnitz, Germany. International Workshop on Impedance Spectroscopy .
Abstract
Electrolytic capacitors form an important part of most drive systems. Consequently a method of determining the state-of-health of these capacitors without having to remove them from the system would be of value. In this paper a method of achieving this is proposed. This is achieved by measuring the current through and the voltage across the dc link capacitor within a brushless dc motor drive; from these values the impedance spectrum is calculated. From these measurements the capacitance and resistance values of the capacitor are calculated. This technique forms a useful prognostic tool for power electronic drive systems where changes to these electrical parameters are a good indicator of the state-of-health of the capacitor. Real-world results taken from an experimental system demonstrate that increases in capacitor resistance can be clearly observed.
Metadata
Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2016 International Workshop on Impedance Spectroscopy | ||||
Keywords: | capacitors; Drives; Brushless machines; Prognostics and health | ||||
Dates: |
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Institution: | The University of Sheffield | ||||
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Electronic and Electrical Engineering (Sheffield) | ||||
Funding Information: |
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Depositing User: | Symplectic Sheffield | ||||
Date Deposited: | 06 Sep 2016 10:16 | ||||
Last Modified: | 25 May 2023 09:49 | ||||
Status: | Published | ||||
Publisher: | International Workshop on Impedance Spectroscopy | ||||
Refereed: | Yes |