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Comparative Study of Inverter Topologies to Improve WPT Efficiency for Left Ventricular Assist Device

    Authors

    1 Department of Electrical and Electronic Techniques, College of engineering, University of Kerbala

    2 Department of Electrical and Electronic Techniques, College of engineering, University of Kerbala and college of Information Technology Engineering, Al-Zahraa University for Women.

,

Document Type : Research Article
10.63463/kjes.1201

Abstract

A comparative analysis of the performance of various types of inverters is presented in this paper to improve the operational efficiency of a wireless power transfer (WPT) system that is specifically designed for left ventricular assist devices (LVADs).  Minimizing total harmonic distortion (THD) of the inverter's output can enhance the quality of the AC signal supplied to the WPT system and improve system efficacy. Three inverter topologies were designed: the H-bridge inverter, the multilayer inverter, and the Class-E inverter, at different distances of 30 mm, 50 mm, and 60 mm. Using the Class-E inverter in the WPT system achieves 63.3% overall performance with a THD of 2% at a distance of 60 mm, as indicated by the simulation results. While using the multilayer inverter exhibited moderate performance, reaching 50% efficiency and 24.5% THD, the H-bridge inverter accomplished 45% efficiency and 49.19% THD. The efficiency and quality of the transmitted power are improved by using the Class-E inverter in the WPT system compared to alternative varieties. Consequently, a Class E inverter can provide superior performance for particular types of wireless power transfer systems, particularly in biomedical applications.

Keywords

References
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Kerbala Journal for Engineering Sciences
Volume 5, Issue 4
December 2025
Pages 162-175
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