Highly Efficient Dual-Side Wireless Power Transfer: Implementation of Synchronization and Wireless Communication

MSc defense of Hitesh Dialani

This thesis proposes a practical solution for efficient dual-side wireless power transfer (WPT) by using an active rectifier with MOSFETs instead of a diode rectifier. The approach employs a dual active bridge topology with dual-side control to achieve optimal load tracking. Synchronization between the generated current and the active rectifier is established using a printed circuit board (PCB) with zero current crossing detection (ZCCD). Seamless wireless communication between the primary and secondary sides is ensured by transmitting the new duty cycle from the secondary side to the primary side using an nRF24L01+ wifi module. Validation includes remote control of an external LED connected to the receiver side from a distance of approximately 5m, and mathematical modeling is used to optimize power delivery and mitigate high-frequency noise.