Educational bench: self-controlled synchronous machine

This article deals with the presentation of an experimental bench dedicated to the teaching of electromechanical systems during undergraduate curriculum. This bench permits to explain the main principles of an elementary synchronous motor by a practical approach of the physical phenomena. At first, students start to describe theoretically the motor based on the fundamental electromagnetic relations and concretise their calculations by a progressive realization of their coil windings and finally the electromechanical characterization of the motor. The educational approach is done in order to bring students to face with essential questions about machines and electrical drives.