Research on Passive Control Strategy of AGV Wireless Power Transfer System

Automated guided vehicle (AGV) is widely used in automated and intelligent logistics management system. However, the traditional AGV charging method needs long charging time and has fixed charging position that is inflexible, which shortens the effective working time of AGV and increases the working cost. In order to solve these problems, an AGV wireless power transfer (WPT) system is designed in this paper. At the temporary parking points of AGV, intermittent pulse charging is proposed to realize 24-hour operation. Then the PI-PBC passive control strategy is proposed to reduce the regulation time of the system and increase the effective charging time within each docking time, so as to transfer more power. Finally, a 1.5kw WPT simulation model of AGV system is established in PLECS. Compared with the traditional PI control strategy, the output voltage of the PI-PBC control strategy has no steady-state error, and its dynamic performance is much better than that of the PI control strategy.