Electrical Machines
Transformers, DC machines, induction motors, synchronous machines and special motors — converting between electrical and mechanical energy.
Electrical machines use magnetic fields to convert energy. Motors turn electrical energy into mechanical motion; generators do the reverse; transformers change AC voltage levels. Electric motors account for a large share of all electricity used in industry.
Sub-topics (5)
Transformers
Construction, EMF equation, equivalent circuit, losses, efficiency and regulation.
DC Machines
Commutator machines that run as DC motors or generators — construction, EMF and torque equations.
Induction Motors
The workhorse of industry: a rotating field drags the rotor along with a little slip.
Synchronous Machines
Alternators and synchronous motors run at exactly synchronous speed, locked to the supply frequency.
Special Machines
Stepper motors, BLDC motors, servo motors and universal motors.
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