Säädetyt sähkömoottorikäytöt (5 cr)

Objective

The students know the basics of the power electronics used in converters, e.g. structures and operating principles of commutated rectifiers and inverters. They know the components and devices of electric drives. They are able to size the components of constant and variable speed drives for various applications, such as pumps, blowers, conveyors and lines. They are familiar with the bus solutions used in the control. They know the most common protection and control methods. They are able to parameterise and set up electric drive devices and equipment. They know the latest techniques used in electric drives and are able to follow the development in this field.

TSASV – Competence in electric power systems
The student has the knowledge of electric motor drives.
The student is able to size components for constant speed and adjustable motor drives.
The student is familiar with the protection and control methods including programmable logics and bus solutions.

Content

Power electronic components, e.g. semiconductor devices used in converters
Structures and operating principles of line commutated rectifiers and inverters
Operation of self-commutated converters, e.g. inverters and switched-mode power supplies
Controlled ac and dc drives
Soft starters, intelligent motor starters
Basic structure and components of electric drives
Servos
Intelligent motor drives
Bus solutions
Sizing and selection of drives (pumps, blowers, conveyors, lines etc.)
Basics of the control methods of electric machines, e.g. direct torque control
Device parameters and set-ups

Materials

Handouts (pdf)

Completion alternatives

Exams 60 %, assignment 30 % and laboratory works 10 %

Student workload

-lectures 50 h -assignment 25 h -independent study 60 h Total 135 hours

Assessment criteria, satisfactory (1)

Adequate (1): The student identifies the basic knowledge and terminology but in the interpreting of the essential concepts the skills are still inadequate.

Satisfactory (2): The student is familiar with the basic knowledge and terminology but in the application of the essential concepts the skills are still inadequate.

Assessment criteria, good (3)

Good (3): The student:
- knows the components and devices of electric drives.
- is able to size the components of constant and variable speed drives for various applications, such as pumps, blowers, conveyors and lines.
- knows the most common protection and control methods.

Very good (4): The student masters the essential knowledge and can apply the knowledge.

Assessment criteria, excellent (5)

Excellent (5): The student masters the essential knowledge and can apply the knowledge acquired in a creative and innovative manner.

Qualifications

Basics in CAD
Basics in electrical design