Coil Position Control Technology in Magnetic Coupled Wireless Power Transmission

Abstract This article mainly studies the issue of power and efficiency fluctuations at receiving end caused by changes in relative positions transmitting coil a magnetic coupled radio energy transmission system. A circuit model was built to analyze logical relationship wireless system, optimal position two-coil system calculated. Simulation analysis experimental measurements were conducted obtain different distances. Based on microcontroller, closed-loop automatic control algorithm is designed for laser rangefinder stepping motor. When changes, can move with so that quickly stabilize point. The method used this achieve stable over 7 W when moves 0-100 cm along axis.