Design and modeling of tubular double excitation windings linear switched reluctance motor

A novel tubular double excitation winding linear switched reluctance motor is presented in this paper. It helps to increase the electromagnetic force of the linear switched reluctance motor. And it takes the same operating principle of conventional switched reluctance linear motor, so it is easy to control. The concept design and operating principle are presented. The electromagnetic force is formulated analytically based on equivalent magnetic circuits, and the result is validated by numerical analysis. It shows that the machine can achieve high thrust force compared with conventional linear switched reluctance machines. In addition, it helps to apply sensorless technology into this machine.