Implementation of the irregular pulse density modulation‐controlled wireless power transfer system for constant current and constant voltage output

Abstract

SummaryIn this paper, irregular 32 pulse density modulation (PDM)‐controlled wireless power transfer (WPT) system is proposed for constant current (CC) and constant voltage (CV) outputs. The proposed WPT system has a load independent ZPA frequency characteristic with CC and CV outputs. Thus, soft switching conditions are achieved for both CC and CV outputs. An experimental prototype was prepared to validate the effectiveness of the proposed irregular 32 PDM‐controlled WPT system. WPT coil design parameters are presented and analyzed with lateral and rotational misalignment conditions in ANSYS. The experiments were determined as 3 A for CC output and 200 V for CV output. The maximum efficiency of the proposed system is measured (95.34%) at aligned coils with 100 mm air gap. In addition, the efficiency results are presented and evaluated by performing experimental studies under both lateral and rotational misalignment conditions.

ClosedLoop Control of Pulse-Density-Modulated Wireless Power Transfer with Fast MEPT

“…These strategies represent promising avenues for enhancing the efficiency of WPT systems and overcoming the current limitations of this technology. For example, an irregular 32 pulse density modulation (PDM)controlled wireless power transfer (WPT) system is proposed for constant current (CC) and constant voltage (CV) outputs [16]. Furthermore, a feedforward power compensation method based on pulse density modulation (PDM) was proposed is a more streamlined and efficient WPT system that can handle both power and data transmission with a high reliability and minimal additional hardware requirements [26].…”