Effect of Structure Dimension on Characteristic Values of Double Excited Linear Parametric Motor

This paper describes improvements in the performance characteristics of linear parametric motors. Characteristic values such as the static thrust (Fs), static thrust to mass ratio (Fs/M) and static thrust to input power ratio (Fs/P1), were improved by adopting a double excited structure. More-over, the parameter values were increased by attaching shading coils at each magnetic pole.