Wireless Power Transfer System with Optimal Dead-Time Tracking Class-D Power Amplifier

Abstract

This paper presents a cross-connected (CC) wireless power transceiver (WPT) with an optimal dead-time controller (ODTC). The ODTC is designed to achieve zero-voltage-switching (ZVS) in a class-D power amplifier, reducing switching losses. This reduction in switching losses directly contributes to improved overall system efficiency. Furthermore, the proposed controller can quickly and accurately adjust the dead-time, responding effectively to any variations or changes in the system. This adjustment capability not only ensures high efficiency but also safe operation. The simulation results demonstrate the ODTC's ability to control the dead-time effectively.