Motor control from simple on, off, start, stop, to clamping, variable voltage, frequency conversion, vector, torque control, motor maintenance tools detailed introduction is nothing more than to make the motor more accurate positioning, more stable speed and more detailed torque changes. There are two common ways to control AC Induction Motor in motor maintenance:
a. One-time voltage control method: change the voltage of the stator coil, you can change the speed. For example, a fan for home use uses a switch to change the fan speed. Servo motor.
b. Frequency control method: the frequency of the mains is 60Hz, if the use of a microcontroller or digital signal processor, the operation of the rectifier component (MOSFET, IGBT), the power supply into a different frequency, that is, the AC motor speed can be changed. Ac induction motor frequency conversion, variable voltage control, the advantages are miniaturization, lightweight, low price, but the disadvantage is low energy conversion efficiency [easy to heat], electromagnetic interference strong [easy to produce noise], noise and vibration [high harmonic and mechanism resonance].
In order to solve the above problems, the academia and the industry are actively using DC motors and DC brushless motors to overcome them. Dc motor has good stability, quick response, and almost linear between the input and output, so that it can have good control performance, so it is widely used in high-precision control occasions. However, because the DC motor brush and commutator is a mechanical friction contact, it is easy to produce wear, spark and electrical noise, resulting in reduced reliability. The brushless DC motor replaces the commutating part of the DC motor (brush and commutator) with an electronic circuit, and retains the advantages of the DC motor, which can start and stop quickly; Speed is proportional to voltage; The torque is directly proportional to the current, suitable for high accuracy, high stability and high speed occasions. Its disadvantage is that it is limited by the material and volume of the permanent magnet, and the difficulty is relatively increased when the output of large horsepower is made.
For more questions about the generator set, please call the Beidou Power team. More than ten years of professional production and sales of power generation equipment experience, more professional engineer team to serve you, choose Beidou power is to choose rest assured, welcome on-site factory inspection.
Post time: Feb-08-2025