Curriculum subject

Electrical Drives

Subject
Subject code	TRT050
Subject name	Electrical Drives
Credit points	2 CP
Grading method	Grade prelim

Curriculum subject
Curriculum	2004 RA
Study year	0
Semester	Spring semester
Subject type	Mandatory

Subject loads
Lecture	8
Practice	8

General description
General description of the electrical drive, development history. Electrical drive as the element of an automatics control system and as a control object of the system. Alternative current, three-phase alternative current, rotating magnetic field. Classification of electrical motors, work regimes, warming. Electromechanical conversion. Direct current machine. Three- and single phase asynchronous motor. Contactor control of electrical motors. Soft start of the asynchronous motor, drives with frequency control.

General aim
- to provide basic knowledge about three-phase alternative current; - to provide knowledge about the physical basics of the work of electrical motors, their construction; - to describe the electrical drive as an automatic control system of an electrical motor, - to give a survey and knowledge about the control problems, control devices and usage of electrical motors.

Aim
The student: - knows the properties of three-phase alternative current and can compute three-phase electrical schemes; - knows the physical basics of the work of electrical motors, can choose motors, depending on the field of usage; - knows the control tasks and control possibilities of electrical motors, can compile contactor control schemes.

Form description
Lectures, tests (homework), laboratory works, written examination paper.

Literature
1. R.Lahtmets. Elektrotehnika I. Alalisvool. Tallinn.2002. 2. R.Lahtmets. Elektrotehnika II. Vahelduvvool. Tallinn.2002. 3. T.Lehtla. Elektriajamid. Tallinn. 2008, 201 lk; 4. J.Võrk. Automaatika alused. Tallinn, 2008, 83 lk 5. http://sise.ttu.ee/eta/Ope.htm , edasi vali: AME AME3120 vastavalt küsimuse sisule.

Current rounds
None