Induction motor driven active roller transfer for belt conveyor systems

This paper concerns a transfer system which is capable of moving products on conductive rollers which are driven by linear induction motors. The system is placed in between transport belts and minimizes dead spots when products are transferred from one belt to the other. The operation principle of the transfer is analyzed by 2-D finite element analyses. A design with a triple-layer, short-pitch winding is presented that minimizes manufacturing costs. The performance has been verified by measurements on a prototype.