Linear motion contactless power supply-a comparative study on topologies

In order to have a proper design of a contactless power transfer system, multiple parameters such as efficiency of power transmission, electromagnetic characteristics, manufacturability and simplicity as well as cost and reliability needs to be taken into consideration. In this paper different topologies of contactless power transfer systems for linear motion applications are analyzed and compared. Besides, some new structures are proposed and evaluated by finite element method showing improved performance for linear motion application.