Inspec keywords: machine control; induction motors; invertors; vibration control; air gaps; torque control

Other keywords: inverter-fed large induction motors; direct online starting value; constant air-gap flux; hazardous shaft torque oscillations; slip frequency control scheme; large motor system; pulsating torsional torque; torsional vibration control; natural torsional frequency; motor line current; torque pulsations; motor starting current; constant air gap flux scheme; torsional toque problem; motor inverter; torsional torque oscillations; starting period

Subjects: Control of electric power systems; Power convertors and power supplies to apparatus; Asynchronous machines; Mechanical variables control