Induction Motor vs. General Motor
The motor can be turned on "in reverse" and is called an induction motor, also known as an "asynchronous motor". This means that the rotor of the motor is placed in a rotating magnetic field, and under the effect of the rotating field, rotating torque is obtained, and thus the rotor of the motor rotates.
The motor rotor is a rotatable electrical conductor, generally mostly in the form of a squirrel cage. The motor stator is the non-rotating part of the motor with the specific task of creating a rotating magnetic field. The rotating magnetic field is not accomplished by mechanical means. It is simply a cyclic transformation of the magnetic poles by passing alternating current through several pairs of electromagnets so that it is equivalent to a rotating magnetic field. Such motors do not have brushes or collector rings like DC motors, and there are single-phase motors and three-phase motors according to the type of AC power commonly used.
If there is a current through the circuit, it will be around the general compass of the magnetic needle that will be deflected. Faraday from this inspiration thinks if the magnet is fixed, the coil is likely to move. According to such a concept, he successfully created a simple device. In the device, where there is current through the line, the line will be around a piece of magnet constantly rotating.
The induction motor and general motor-specific differences are the following three aspects.
- Induction motor refers to the induction running type motor. It uses an auxiliary coil and capacitor in starting and running. Its structure is simple, high reliability, and efficiency is also quite large. General motors are often used for frequent forward and reverse applications. 2.
- The induction motor can run continuously, and the motor speed will change as the load increases. It is suitable for applications that do not require speed control. There are two types of induction motors: single-phase induction motors and three-phase induction motors. Ordinary motors, can run instantaneously in forward and reverse. With a simple braking device, it can rotate forward and reverse in a short period of time. The stator coil is designed with the same primary and secondary coils, so that it has the same characteristics in forward and reverse operation.
- In induction operation, torque is generated in the direction opposite to the direction of rotation, so it is impossible to change direction in a short period of time. In order to improve the instantaneous reversibility of forward and reverse in a short period of time, the starting torque is increased in general motors. In order to prevent over-running, a simple damping device is used to replace some maintenance forces. The stopping time prevents over-running, and the instantaneous capability is very good.