Electrical Machines - Basic vocational knowledge (Institut für Berufliche Entwicklung, 144 p.): 1. General information about electrical machines: 1.1. Definition of terms

Electrical Machines - Basic vocational knowledge (Institut für Berufliche Entwicklung, 144 p.)

1. General information about electrical machines

		1.1. Definition of terms
		1.2. Types of electrical machines
		1.3. Operations of electrical machines
		1.4. System of rotating electrical machines (generators, motors, converters)
		1.5. System of stationary electrical machines (transformers)

1.1. Definition of terms

An electrical machine converts energy from one category into another. Thereby at least one energy category features as electric power.

Survey 1 - Energy transformation of electrical machines

Mechanical system (prime mover)	®	Generator	®	Electrical system (mains)
Mechanical system	¬	Motor	¬	Electrical system (mains)
Electrical system (mains)	®	Rotating converter and transformer	®	Electrical system (mains)

Irrespective of manifold features, for instance the external shapes of the electrical machines, they all comprise two electric circuits which have been coupled through a magnetic circuit.

An electrical machine is an energy converter in which two electric circuits have been coupled by means of a magnetic circuit.