An Antimisalignment Wireless Voltage Source for Industrial Robots Applying Voltage-Doubler Rectifier

One of the difficulties in achieving completely unmanned and automated industrial robots is realizing the unmanned and automated charging process, which can be solved by wireless power transfer (WPT). In this paper, a wireless voltage source for industrial robots using all-direction antimisalignment coupled coils and voltage-doubler rectifier is proposed. When industrial robots dock to charge, the misalignment of the transmitter coil and the receiver coil occurs to destabilize the mutual inductance and output voltage. The alldirection antimisalignment coupled coils maintain the mutual inductance stable at the cost of lower coupling coefficient. Lower coupling coefficient leads meeting output voltage requirement to tough. Thus, the voltage-doubler rectifier is introduced to solve the problem of insufficient voltage output capacity. Finally, the antimisalignment property and the voltage output capacity of a 120-V output wireless voltage source are both validated by simulation results.