Views: 160 Author: Site Editor Publish Time: 2021-11-23 Origin: Site
Induction copper rotor motor refers to a motor that uses electromagnetic induction between the rotor and stator in motor to induce current in the rotor to achieve electromechanical energy conversion. Induction motors are generally used as rotor electric motors. The two basic types of rotor motors ac used in industry are synchronous motors and induction motors.
A synchronous AC motor is an alternator whose rotor speed is the same as that of the stator's rotating magnetic field. The proflute silica gel rotor is rotating, and the two ends of the installed rotor field winding coil are connected with two slip rings insulated from each other. The outside sends DC power to the field winding through the brush pressed on the slip ring. When the desiccant rotor field winding is energized, it will generate a magnetic field, with N pole and S pole. The rotor rotates and cuts the lines of magnetic force to generate an induced electric potential.
Induction outer rotor motors, also known as "asynchronous motors", are the most commonly used motors in industrial machinery, such as pumps, conveyors, and blowers. They also work with electromagnetic fields, but are classified by the number of "phases". Phase refers to the amount of independent current that activates the coils located around the rotor motor stator.
1. Frequency of AC power
The frequency of alternating current in daily life is generally 50 Hz or 60 Hz, while the frequency of alternating current involved in radio technology is generally larger, reaching kilohertz (KHz) or even one million hertz (MHz). The frequency of alternating current refers to the number of periodic changes per unit time, the unit is Hertz, and the cycle is inversely related.
2. Number of coils constituting the stator
With the support of national policies and the adjustment of industrial policies, low-voltage and high-current motors are becoming more and more common. The stator coils of low-voltage and high-current motors usually use multiple enameled wires wound in parallel.
3. Motor load
When the load of the asynchronous stator rotor motor increases, the motor speed decreases, the slip ratio increases, the rotor induced electric potential increases, and the rotor current increases. The magnetic field formed by the rotor current increases the reduction effect of the air gap flux. In order to keep the air gap flux constant, the stator current will increase by itself. This is the same as the principle of the increase of the primary current caused by the increase of the secondary current of the transformer. In order to adjust the speed of an AC induction motor, the frequency of the AC power source must be changed.
