Practical considerations in the design of multiphase pick-ups for contactless power transfer systems

Contactless power transfer systems are receiving newfound attention, although current commercial systems can only tolerate limited movement of the receiver relative to the track (transmitter). A new multi-phase (Quadrature) pick-up has previously been presented to extend the allowable movement. This paper presents a high power prototype of the quadrature pick-up based on a commercial pick-up design for AGV systems. Practical aspects of the design are covered, such as producing a consistent power output with lateral movement, and maintaining vertical clearance between the pick-up and the track.