Research on MC-WPT System with Wide Input Voltage Range

摘要

Magnetic coupling wireless power transfer (MC-WPT) technology is used in various applications. This paper proposes MC-WPT system with a wide input voltage range for electric vehicles (EV) wireless charging. Firstly, researches the characteristics of LCC-S resonant network with parasitic parameters by establishing mutual inductance model and loss model, and carries out the loss calculation and efficiency analysis of each segment in the system. Then, the theoretical value of the system adaptive input voltage range is calculated by assuming a constant system output voltage and a high transmission efficiency. Finally, by establishing an experimental platform, the adaptability of the system to a wide range of input voltage is successfully verified, which provides a reference for the design of such MC- WPT system in the future.