A4 Conference proceedings

Output Stage Capacitor Aging Detection of Grid Connected Isolating DC-DC Converter

Publication Details
Authors: Hannonen Janne, Honkanen Jari, Ström Juha-Pekka, Kärkkäinen Tommi, Korhonen Juhamatti, Silventoinen Pertti, Räisänen Samuli, Sankala Arto
Publication year: 2017
Language: English
Related Journal or Series Information: European Conference On Power Electronics And Applications
Title of parent publication: 2017 19th European Conference on Power Electronics and Applications (EPE'17 ECCE Europe)
Journal acronym: EPE-ECCE Europe
Start page: 1
End page: 8
Number of pages: 8
ISBN: 978-1-5386-0530-1
eISBN: 978-90-75815-27-6
ISSN: 2325-0313
JUFO-Level of this publication: 1
Open Access: Not an Open Access publication


Reliability is one of the key features that is sought after in converter design. Electrolytic capacitors are the most common capacitor type in switching mode power supplies to be used as a DC bus energy storage. However, electrolytic capacitors are known to degrade due to aging. This paper introduces a capacitance degradation detection method for a step-down DC-DC converter that is based on introducing a voltage transient to the output voltage. The method is based on analyzing the voltage step response. The method was verified to be feasible with experimental tests with a grid connected step-down DC-DC converter.

LUT Focus Areas

Last updated on 2018-19-10 at 07:55