Misalignment Tolerant Inductive Power Transfer System for CC/CV Operation Using PWM Controlled Capacitor

International Journal of Electrical and Electronics Engineering

© 2026 by SSRG - IJEEE Journal

Volume 13 Issue 3

Year of Publication : 2026

Authors : Praveen Manoharan, Balaji Chandrasekar

10.14445/23488379/IJEEE-V13I3P108

How to Cite?

Praveen Manoharan, Balaji Chandrasekar, "Misalignment Tolerant Inductive Power Transfer System for CC/CV Operation Using PWM Controlled Capacitor," SSRG International Journal of Electrical and Electronics Engineering, vol. 13,  no. 3, pp. 95-112, 2026. Crossref, https://doi.org/10.14445/23488379/IJEEE-V13I3P108

Abstract:

In recent years, the Inductive Power Transfer (IPT) system has gained momentum in the electric vehicle and consumer electronics industry. The IPT output system is mainly affected by load variations, misalignment, and environmental factors. A novel approach is presented in this article to reduce the impact of those factors on Constant Voltage (CC)/Constant Current (CV) charging in the IPT system. The compensation capacitor in the Series-Series (SS) compensation is replaced by the Pulse Width Modulation Controlled Capacitor (PWMCC). PWMCC varies its capacitance in real-time to maintain the CC/CV operation regardless of misalignment, load changes, and aging. The MOSFET duty ratio is varied in the PWMCC to obtain the desired capacitance. With the simple SS compensation, the proposed IPT system operates under two different resonant conditions by maintaining fixed frequency operation for achieving CC/CV operation. In the simulation, the misalignment is realized by varying the mutual inductance. The simulation and experimental investigations have been carried out for a 500W system, and the results are presented to validate the theoretical analysis. Lastly, the proposed system is compared with similar works reported recently.

Keywords:

Inductive Power Transfer, Misalignment Tolerance, PWM Controlled Capacitor, Constant Current/Voltage Charging, Series-Series Compensation.

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