Educational guide 2021_22
Escola de Enxeñaría Industrial
Grado en Ingeniería en Tecnologías Industriales
  Electrical machines
Topic Sub-topic
UNIT I: INTRODUCTION TO THE ELECTRICAL MACHINES I-1 Electromagnetic and electro-mechanic fundamental laws. General behaviour notes: Physical arrangement of the electrical machines. Types of machines. Losses. Energy balance. Efficiency. Heating. Cooling.
Rated power. Insulation types. Degrees of mechanical protection and construction types. Nameplate.
I-2 Usual construction: Magnetic poles. Windings.
I-3 M.M.F’s and E.M.F’s inside the machine: Fields generated with concentrated and distributed windings. Rotating magnetic field. Winding factor
UNIT II: INDUCTION MOTORS (ASYNCHRONOUS) II-1 Three-phase induction machine
Construction characteristics. Operating principles. Electrical equivalent circuit. Powers and torques. Electrical tests. Energy balance and efficiency. T-s curve. Operation modes. Starting methods and speed control.

AC motor protection and control switchgear.

II-2 Single-phase induction motor
Construction characteristics. Operating principles. Electrical equivalent circuit. Starting methods.
Construction characteristics. Operating principles. Armature reaction. Salient poles and cylindrical rotor machines. Electrical equivalent circuit. Stand-alone and grid-connected behaviours. Synchronous motor: Characteristics and uses.
UNIT IV: D.C. MOTORS. SPECIAL MACHINES IV-1 Classic D.C. motor: Construction characteristics. Operating principles. Excitation systems. Armature reaction. Commutation. Speed control. Nameplate information.

IV-2 Special machines: BLDC, Stepper Motors.
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