Dual-Frequency Wireless Power Transfer System Based on Asymmetric Phase-shift Following Control

The output power supply adjustment of two loads can be realized by the single-inverter dual-frequency wireless power transfer system at a low cost. This paper presents a dual-frequency wireless power transfer system based on following control of asymmetric phase-shift. The asymmetric phase-shift output consists of wide pulse width $\boldsymbol{m}$ and narrow pulse width $\boldsymbol{n}$. The output of the two channels can be adjusted by adjusting m and n. The system can convert the target value of voltage and current into the inverter asymmetric phase shift angle, and the output voltage can be controlled by closed loop. In this paper, an experimental device based on asymmetric phase-shift following control for switching output voltage target value $10 \mathrm{~V}-5 \mathrm{~V}-10 \mathrm{~V}$ is constructed. The experimental results show that the asymmetric phase-shift angle following control dual-frequency wireless power transfer system can control the output voltage to the target value, and the output current is followed by parameter calculation.