Electric MachinesLaajuus (5 cr)

Objective

The students master the basic structures, operating principles and equivalent circuits of the most common industrial dc and ac motors. They are familiar with the operating characteristics and possible applications of the various motor types. They are able to interpret standard symbols describing the performance characteristics and structure of motors. They are familiar with the excitation systems used in generators and the protection methods of generators. They are familiar with the control circuits of electric motors and the components used in them. They know the basic transformer types and their operating principles and applications. They know the protection methods of transformers.

Content

Structure, operating principle and equivalent circuits of transformers, motors and generators
Instrument transformers, couplings of three-phase transformers
Operating characteristics and operating values of dc and ac motors
Excitation systems and protection of generators
Service and maintenance of electric machines
Standard symbols describing the performance characteristics and structure of an electric motor
Control circuits of electric motors and their components

Qualifications

Basic knowledge of electrical power engineering.

Assessment criteria, satisfactory (1)

Very good (4-5): The student masters the basic structures, operating principles, operating characteristics, protections and equivalent circuits of electric machines and is able to apply the knowledge and skills acquired e.g. when selecting devices and protection methods.
Good (3). The student masters the basic structures and operating principles of electric machines and understands their significance when selecting devices and protection methods.
Satisfactory (1-2): The student is familiar with the basic structures and operating principles of electric machines.