About the knowledge of three-phase asynchronous motor, but how do you know the speed regulation? Today, we will introduce seven speed control methods for you. First, the pole-changing logarithmic speed control method: This speed-adjusting method is t...
Fourth, the winding type motor rotor string resistance speed control method: the wound-type asynchronous motor rotor is inserted into the additional resistor, so that the slip of the motor is increased, and the motor runs at a lower speed. The greate...
Sixth, electromagnetic speed control motor speed control method: electromagnetic speed control motor is composed of cage motor, electromagnetic slip clutch and DC excitation power supply (controller). The DC excitation power supply has a small power,...
Motor braking is a common problem encountered in motor control. Generally, motor braking can occur in two different situations. First, in order to achieve rapid stopping, the rotating direction of the rotating magnetic field and the direction of rota...
1. When the weight of the crane drops, the rotor of the motor is manually operated under the gravity of the weight, and the speed of the rotor may exceed the synchronous speed. At this time, the motor is in the regenerative braking state. At this tim...
Second, energy consumption braking: A direct current is applied to the stator windings to produce a fixed magnetic field. At this time, the rotor cuts the magnetic lines of force in the direction of rotation, thereby generating a braking torque. Sinc...
Regenerative braking: Regenerative braking differs from both braking methods described above. Regenerative braking is only one working condition of the motor under special circumstances, and the above two are a method artificially applied to the moto...
In life, when we encounter a bad motor, we want to disassemble, how to do it? Let the motor manufacturer tell you below. (1) First remove the external wiring of the motor and mark it. For example, for the asynchronous motor, the marking corres...
