Journal
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
Volume 68, Issue 10, Pages 10107-10117Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TIE.2020.3026265
Keywords
Capacitors; Monitoring; Inductors; Buck converters; Sensors; Electrolytes; Resistance; Aluminum electrolytic capacitor (AEC); buck converter; equivalent series resistance (ESR); monitoring scheme; voltage ripple
Categories
Funding
- Key Realm R&D Program of Guangdong Province [2018B010142001]
- National Key Research and Development Program of China [2018YFB0407503]
- Planned Science and Technology of Guangdong Province, China [2017B090901068, 2017B090908004]
Ask authors/readers for more resources
A monitoring method of capacitor's ESR for buck converters is proposed in this study, which can monitor the target parameter by sampling output ripple voltage without the need for a current sensor. Experimental results validate the effectiveness of the method.
Aluminum electrolytic capacitors are widely used in switching mode power supply as smoothing capacitor, but they are the weakest among power components in dc-dc converter. It is very important to monitor its electrical parameters, mainly the equivalent series resistance (ESR). A monitoring method of capacitor's ESR for buck converters is proposed in this article. Based on the calculation model of ESR, the target parameter is monitored by sampling output ripple voltage. The proposed method needs no current sensor. Whether the circuit is in continuous conduction mode or discontinuous conduction mode, it is convenient to monitor the capacitor. Implementation of the monitoring system is presented. The experimental results validate the effectiveness of the method.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available
Share Paper
