Abstract
The aluminum electrolytic capacitor (AEC) plays a key role in power electronic converter, but it is the most vulnerable component in the DC-DC converter. Throughout its short lifespan, the equivalent series resistance (ESR) will increase with the AEC aging. Therefore, it is important to monitor the ESR for ensuring the normal operation of a DC-DC converter. For a boost converter operating on discontinuous conduction mode and continuous conduction mode, an online noninvasive ESR estimation method was proposed in this paper. Based on the expression derivation of the output voltage, the ESR can be estimated by sampling the output ripple voltage at three specific moments. The proposed method is a noninvasive method, which does not require the current sensors. This method can be used in the discontinuous conduction mode and critical conduction mode. The simulation results verify the effectiveness of the proposed method.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.