The study of dynamic characteristics of an electric drive of centrifugal pump with taking into account tooth harmonics of induction motor

Abstract

Asynchronous drives of centrifugal pumps are the most widely used types of electric drives applied in the industry and construction. The article researches dynamic characteristics of the induction motor — a centrifugal pump system composed of a set of interrelated and interacting subsystems of different physical nature. For study of the dynamics of the asynchronous electric drive, a mathematical model is proposed, which takes into account the tooth-harmonic electric motor and hydraulic pump load parameters. The article presents the results of numerical experiment: dynamic characteristics of the current, and electromagnetic torque, angular speed of the rotor, pump pressure and flow. The authors used methods of operational calculus of electric and electric machine parameters and the theory of centrifugal vane machines. The following software is used: MatLab/Simulink.