Operation of Electric Motor with Elastic Load

Abstract

Electromechanical system as object of research comprises two parts: electrical and mechanical. Converter of electric energy and control system compose an electrical part, all other linked between them moving masses form mechanical part. Several elements of mechanical parts, for example, shaft can be of finite stiffness and the total system can have kinematical clearance. According to this, electromechanics deals with one-mass, two-mass or several-mass mechanical part of a system. In the paper two-mass systems with the finite stiffness and non linearity of the shaft caused by kinematical clearance is considered. The structures of electromechanical system with finite stiffness of the shaft and clearance are presented, computer models of those systems are developed and simulation at different controlling inputs and different parameters of the systems is carried out. Two stages of the motor starting are considered: initial, while the deformation of elastic shaft or other chains takes part and the other end of shaft does not rotate yet, and work stage – when rotor starts to revolve. Ill. 8, bibl. 12 (in English; summaries in English, Russian and Lithuanian,).