Two‐Dimensional Omnidirectional IPT for Robots

The IPTS for mobile robots, which has a single wire layer of easily fabricable power floor structure and an evenly displaced multi pick‐up structure for receiving uniform power, is explained. Due to its simple structure, a wide area power floor of 3.15 m
²
(1.5 m×2.1 m) could be fabricated as a prototype. Three pick‐ups with an evenly displaced angle and space are adopted where the limited bottom area of the free‐moving mobile robot is considered. The size and position of each pick‐up are appropriately selected for the given subwinding size of the power floor and magnetic pole arrangement. Experiments for the prototype show that the proposed multiple pick‐up structure lowers the spatial output power variation and that enough output power of 10 W can be obtained for the mobile robots.This chapter is based on the paper by C. Park, S. Lee, G.‐H. Cho, S.‐Y. Choi, and C.T. Rim, “Two‐dimensional inductive power transfer system for mobile robots using evenly displaced multiple pick‐ups,”
IEEE Trans. on Industry Applications
, vol. 50, no. 1, pp. 558–565, January–February 2014.