Točivé magnetické pole (speciální případy)

The video teaches us the basic mechanisms of forming a circular rotating magnetic field, which was one of the important inventions of Nikola Tesla. It will demonstrate the decomposition of the pulsating magnetic field into two counter-rotating fields with half the amplitude. Next, the video shows what happens in the machine with non-harmonic (power supply from the inverter) and non-symmetrical (network imbalance) power supply. The theory is supported by an experiment performed on an induction motor powered by two phases. This frequent single-phasing fault helps us practically demonstrate and theoretically analyze the motor fault running and starting. Additional simulations will then allow us to observe the magnetic field inside the machine during these unusual states. Content in points: The principle of the formation of a rotating magnetic field Rotating magnetic field with non-harmonic supply (the content of time harmonics) Rotating magnetic field in the event of a fault (disbalance) of the network Pulsating magnetic field (connection to a single-phase induction motor) Commented experiment with an induction motor