IMPROVEMENT OF DYNAMIC REGIMES CRANE ELECTRIC ELECTROMECHANICAL SYSTEMS WITH INDUCTION MOTOR DRIVE

A method of oscillations reducing of hoist mechanism electromechanical systems by choice of mechanical characteristics hardness is proposed. A method of reducing of hardness to the optimum in the system of converter ? induction motor by corresponding reduction in voltage without changing the frequency was considered. The results of simulation mode of pick up of load − the most severe for the hoist are presented. Comparison of dynamic characteristics of this mode at work on the natural and optimal characteristics was considered: overshoot, logarithmic damping decrement and the coefficient of dynamic.