Summary of Cómo Funcionan los Motores Eléctricos - Motores de Inducción de CA Trifásicos Motor de CA

00:00:00 - 00:10:00

The video discusses how electric motors work, with a focus on induction motors. It explains how alternating current flows through the phases of the motor, and how this creates a rotating magnetic field. The video also shows how to connect a 3-phase power source to the machine's terminals.

• 00:00:00 This is an electric motor, one of the most important devices invented. These motors are used in all parts of the world, from drinking water that we drink to elevators and machinery in nuclear power plants. In this video, we will see the function of one of them and learn in detail its structure. The motor of induction has a similar appearance to this converts electric energy into mechanical energy which we can use to propel bombs, ventilation pumps, compresors, gears etc. Almost all the parts inside the main casing are found in the front. We find the axis that rotates and to which we can connect things like bombs, gears and poles to make them work in the rear. The fan is connected to the axis, so it always rotates when the motor is working. The motor of induction can produce a lot of heat when it is in operation, so the fan to cool it down is connected to it. If the motor of induction gets too hot, its electric insulation will melt, leading to a circuit malfunction and the motor will be destroyed. The wings on the side of the casing help to increase the surface area and that's why they are important. They allow us to eliminate unwanted heat. The axis is supported by some rotary gears that are found inside
• 00:05:00 The video discusses how induction motors work, focusing on the principles of alternating current and magnetic fields. It explains how two coils of wire create a rotating magnetic field that can induce current in a second coil nearby. Two coils can be connected together to create a stronger field, and a closed circuit of wire inside the large magnetic field can create a current. When we pass current through a cable, fields both push and pull against each other, causing the machine to rotate. The rotor and stator are made of rotating coils, and the rotor only rotates until it aligns with the stator coils. Once it does, the current will stop because the fields will no longer be pushing and pulling against each other. The rotor and stator coils are always slightly out of alignment, so the machine will continually spin in the same direction, but never reach a complete alignment. The distribution of the magnetic field between the coils helps to distribute the current evenly, preventing the machine from aliging and stopping. Finally, the video shows how to connect a 3-phase power source to the machine's terminals to make it work. First, we connect the terminals for phase 1- the rotor. Then we connect the terminals for phase 2- the stator. Finally, we connect the terminals
• 00:10:00 This video explains how electric motors work, with emphasis on induction motors. We see that when alternating current (AC) is provided through the phases, electricity flows from phase to phase, because the AC current direction reverses in each phase. This is why we see the terminals connected in different configurations in the motor's casing, because this allows us to easily connect the terminals and allow the electricity to flow between the phases in a regulated manner. Another way to connect the terminals is using the star configuration, in which the terminals w2 or 2 and v2 are connected in one side. This gives us an equivalent connection in the star configuration. When we pass the electricity through the phases, we see that the electrons share between the terminals of the bases, due to their design differences. The amount of current flowing in the configuration in star and in triangle is different, and we will see some calculations to demonstrate this. The difference between the configurations in star and in triangle is called the motor's phase difference and is measured in degrees. If we have an induction motor with a voltage supply of 400 volts, this means that we can measure the voltage between the phases with a multimeter, and we would get a reading of 400 volts. We call this a voltage line-to-line