Electrical Drives

Components of electrical drives. Past, present and future trends in drive systems. Stationary and transient states of electrical drives. Characteristics of electric motors, typical load torques. Moments of inertia of complex drive systems, accelerating torque. Electrical and mechanical transients, stability problem of drive system. Types of electric motors, their supplying, connection, selecting and cooling.

Electric motors in drive systems:

DC (commutator and brushless) machines. Induction (slip ring, squirrel cage, solid rotor) machines. Synchronous (field winding, permanent magnet, reluctance) machines. Principles of operation, speed-torque characteristics and possibilities of their modifications. Starting and breaking dynamics, classical and modern principles of speed and motion control. 4Q operation.

Methods for selecting the drive types. Sizing and dimensioning electric motors. Thermal conditions, cooling principles, standard and user defined duty types. 

Energy efficient motors and drive systems – technical and economical aspects, principles of energy savings. Electrical drives with increased reliability and fault tolerant operation. 

Student will be provided with the knowledge and procedures for design, optimization and maintenance of grid supplied and controlled electrical drives in industrial and traction systems. They will be able to choose and carry out energy efficient, reliable and cost effective electrical drives.

The lectures provide a theoretical background on discussed topics. A complete study material is available to the students.

Successful practical work on laboratory excercises, which take place in smaller groups, enables prior acquaintance of the students with computational and demo tasks.