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How to Invert a Single-Phase Motor
In order to reverse the three-phase motor, it is only necessary to replace any two of the three power lines of the three-phase motor. What if you want to invert a single-phase motor? There are three main types of single-phase motors, which are described below. 1. Capacitor-operated single-phase motor. This type of motor actually uses a capacitor to split "single-phase" AC power into "two-phase" AC power with a phase close to 90 degrees, which causes the motor to generate a rotating magnetic field. Therefore, by changing the head and tail of any of the two phase windings, the rotation direction of the magnetic field can be changed, so that the rotation of the motor can also be changed. 2. Phase-initiated single-phase motor. The secondary winding in this type of motor is only connected to the electrical equipment during the start-up process, so it is also called the start-up winding. During the start-up process, a rotating magnetic field is generated like a capacitor-operated motor under the combined action of the starting winding and the working winding, so that the motor starts to rotate. After the start winding is de-energized, the alternating pulsation magnetic field generated by the working winding continues to maintain continuous rotation of the motor in the same direction. Therefore, we want to change the direction of rotation of this kind of motor, and its processing method is the same as the capacitor operation mode motor. 3, shaded pole single-phase motor. The stator of this type of motor is laminated with a silicon steel sheet having a "convex pole" having a protruding shape, and the main winding is wound on the salient pole. One side of each pole is provided with a small slot, and the secondary winding is embedded - a short-circuited copper ring, often referred to as a "shaded pole". This type of motor relies on its structural characteristics to create a "rotating magnetic field" that causes the rotor to start. If you want to change the direction of the motor, you need to remove the stator upper pole iron core, turn the direction and then into, that is, cover the pole from one side to the other, the rotation of the motor and the original direction of rotation in contrast.