Performance of Class-E inverters under non-resistive loads

Jeyamanoharan, Dominic (2022) Performance of Class-E inverters under non-resistive loads. Masters thesis, Memorial University of Newfoundland.

[img] [English] PDF - Accepted Version
Available under License - The author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission.

Download (2MB)


Class-E inverters are popularly used in high frequency wireless power transmission because of their compact design and high efficiency. The inverter consists of resonant elements and a transistor, typically a wide band gap device that is toggled to provide an alternating current signal to the load. Although being a highly efficient and flexible converter, most analysis for this inverter assumes resistive loading. In the presence of non-resistive loading, the performance of the inverter can be negatively impacted. This work investigates the performance of the load-independent Class-E and Class-E push-pull inverters under non-resistive loads. Several solutions are proposed to mitigate or prevent the associated performance degradations. Although the proposed solutions are flexible at working with any applications, the target application for this work is a capacitive coupled wireless power transfer system. It is shown that a suitable matching network or reactive power compensation can maintain highly efficient Class-E inverter performance even under non-ideal loading conditions.

Item Type: Thesis (Masters)
Item ID: 15444
Additional Information: Includes bibliographical references (pages 67-71).
Keywords: Class-E, inverter, impedance matching, variable impedance matching, wireless power transmission, resonant capacitive coupling
Department(s): Engineering and Applied Science, Faculty of
Date: May 2022
Date Type: Submission
Digital Object Identifier (DOI):
Library of Congress Subject Heading: Wireless power transmission; Electric inverters; Impedance matching; Electric circuit analysis.

Actions (login required)

View Item View Item


Downloads per month over the past year

View more statistics