Máquinas eléctricas rotativas parte 3B

About this video

• Video Title: Máquinas eléctricas rotativas parte 3B
• Channel: Rodolfo Guas
• Speakers: Rodolfo Guas
• Duration: 00:14:08

Overview

This video, the second part of a series on rotating electrical machines, explains the operating principles of these devices. It visually demonstrates how magnetic fields interact with conductors to generate force and induce voltage, covering both direct and alternating current scenarios, as well as different types of windings in DC machines and the behavior of three-phase motors.

Key takeaways

• Magnetic Field Interaction: The video illustrates how a magnetic field (North to South) interacting with a conductor carrying current generates a force, causing the conductor or coil to move.
• Voltage Induction: When a conductor cuts lines of magnetic flux, a voltage is induced. The magnitude and polarity of this voltage depend on the speed of movement and the rate at which flux lines are cut.
• AC vs. DC Generation: The presentation differentiates between the sinusoidal waveform generated in AC systems and the more constant output in DC systems, explaining how multiple windings smooth the output.
• Types of Windings: Two main types of windings in DC machines are discussed: the undulatory (series) and the multiple (complex) winding, with visual explanations of their connections.
• Three-Phase Motors: The video briefly introduces the concept of three-phase motors, showing their input/output relationships and the generation of three different voltages, with a graphical representation of vector movement.