Wireless power transfer coil design for transmitter and receiver LCC compensation based on time-weighted average efficiency
The impact of changing inner diameter of wireless power transfer (WPT) coils on coupling coefficient is studied and it is demonstrated that at a certain outer and inner coil diameter, turn space variation has minor effect on the coupling coefficient. Next, two compensations networks that offer constant output voltage and zero voltage switching for WPT are presented. Eventually, by defining a time-weighted average transfer efficiency (TWATE), and based on measured values of resistance and inductance of a WPT prototype and experimental charging curve of a Li-ion battery, a design procedure for both compensation networks is proposed. The proposed design leads to high TWATE as well as low material usage.
Publication Source (Journal or Book title)
Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC
Bozorgi, A., & Farasat, M. (2019). Wireless power transfer coil design for transmitter and receiver LCC compensation based on time-weighted average efficiency. Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC, 2019-March, 3100-3106. https://doi.org/10.1109/APEC.2019.8722045