variable frequency drive

Frequency-controlled electric drives are used in various industrial sectors due to the simplicity and reliability of the electric machine design, as well as the ability to provide the required control characteristics. This paper presents a mathematical model of a frequency-controlled electric drive with voltage source inverter developed by the Average Voltage in the Integration Step (AVIS) method and confirms its adequacy.

The paper discusses the cargo anti-sway method based on the induction motor torque control using modern variable frequency drives. The main equations relating the tractive force and the cargo sway angle, on the basis of which the motor torque control law is formulated for zero cargo sway at the end of accelerating and braking, are written.