Affiliations: [a] Faculty of Information Science and Electrical
Engineering, Kyushu University, Fukuoka, Japan | [b] National Traffic Safety and Environment Laboratory,
Tokyo, Japan
Correspondence:
[*]
Corresponding author: Nobuo Fujii, Faculty of Information
Science and Electrical Engineering, Kyushu University, 744 Motooka, Nishi-ku,
Fukuoka, 819-0395, Japan. Tel.: +81 92 802 3694; E-mail: [email protected]
Abstract: The characteristics in the linear induction motor (LIM) mode of new
wireless energy transmission device are cleared analytically. The apparatus
operates as two types of LIM with propulsion force or a linear transformer
without thrust. One type of the LIM is a secondary current controlled wound
type of LIM with primary winding on ground and the other is the LIM with
reaction plate on ground. The paper shows the characteristics of the wound type
of LIM in power running and has the onboard power transmission function even in
the power running. The two-dimensional finite element method (FEM) is used for
the analysis. As a result, it is cleared that the model designed for urban
transit has high efficiency and high input power factor respectively more than
0.9 for the optimal control.
Keywords: Linear motor, LIM, linear transformer, wireless, energy transmission, non-contact power collection, light rail vehicle, FEM
