On the Influence of the Parasitic Capacitance of a Bridge Rectifier on Series-Resonant Capacitive Wireless Power Transfer Systems

Amler A, Weitz N, März M (2022)

Publication Type: Conference contribution

Publication year: 2022

Publisher: Institute of Electrical and Electronics Engineers Inc.

Conference Proceedings Title: 2022 IEEE Energy Conversion Congress and Exposition, ECCE 2022

Event location: Detroit, MI US

ISBN: 9781728193878

DOI: 10.1109/ECCE50734.2022.9947527

Abstract

Capacitive wireless power transfer systems often rely on high frequency power converters and incorporate a resonant coupling link. The input capacitance of a bridge rectifier alters the overall power transfer of a capacitive power transfer system with a series-resonant transfer link. In this field, most analytic converter models are based on a representation of the rectifier as an equivalent resistance, thus neglecting the parasitic properties and the switching behavior of the rectifier. In this paper, studies on said issue are conducted by using a complex power and a time-domain approach. It is shown that through an extension of the capacitance at the rectifier input the transferred power can be increased. An optimal value for the rectifier input capacitance exists, thus maximizing the power. The rectifier capacitance creates an additional degree of freedom in the converter design, influences the soft switching behavior of the inverter, and may be used to improve robustness against a variation of the link capacitance.

Authors with CRIS profile

Adrian Amler Lehrstuhl für Leistungselektronik Nikolai Weitz Lehrstuhl für Leistungselektronik Martin März Lehrstuhl für Leistungselektronik

How to cite

APA:

Amler, A., Weitz, N., & März, M. (2022). On the Influence of the Parasitic Capacitance of a Bridge Rectifier on Series-Resonant Capacitive Wireless Power Transfer Systems. In 2022 IEEE Energy Conversion Congress and Exposition, ECCE 2022. Detroit, MI, US: Institute of Electrical and Electronics Engineers Inc..

MLA:

Amler, Adrian, Nikolai Weitz, and Martin März. "On the Influence of the Parasitic Capacitance of a Bridge Rectifier on Series-Resonant Capacitive Wireless Power Transfer Systems." Proceedings of the 2022 IEEE Energy Conversion Congress and Exposition, ECCE 2022, Detroit, MI Institute of Electrical and Electronics Engineers Inc., 2022.

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