Abstract:This paper analyzes the working principle and performance index for the high-power wireless power transmission (WPT) system via magnetic coupling resonance (MCR). MCR-WPT system has longer transmission distance and higher transmission efficiency compared with inductively coupled power transfer (ICPT) to achieve high-power, long-distance, and high efficiency wireless charging of electric vehicle (EV). So, MCR-WPT has good application prospect and research value for EV field and can fully show the advantages of EV, such as wide distribution, clean and green for environment and so on. Moreover, detailed experimental tests for the transmission performance of the self-built MCR-WPT system experimental setup are done and its correctness and effective is verified.