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brushless motor

Date:2018-4-2 17:04:13    Visits:   
The stator winding of motor is made up of three phase symmetrical star connection, which is very similar to three-phase asynchronous motor. The rotor of the motor is magnetized with magnetized permanent magnets. In order to detect the polarity of the motor rotor, a position sensor is installed in the motor. The driver is composed of power electronic devices and integrated circuits. Its function is to accept the starting, stopping and braking signals of the motor to control the starting, stopping and braking of the motor, accepting the position sensor signal and the positive and reverse signal to control the switching of each power pipe of the inverter bridge and producing the continuous torque; accept the speed instruction and the speed feedback signal for control and adjustment. Speed; provide protection and display and so on.

In the last thirty years, the research on the variable frequency speed control of asynchronous motor is in the final analysis to find the method to control the torque of asynchronous motor. The rare earth permanent magnet brushless DC motor will show advantages in the speed control field with its characteristics of wide speed regulation, small volume, high efficiency and low steady-state speed error.

Brushless DC motor (brushless DC motor) has the characteristics of DC brushes and is also a device of frequency change, so it is also called DC frequency conversion. The international general term is BLDC. Brushless DC motor operation efficiency, low speed torque, speed accuracy are better than any control technology inverter, so it is worth the industry's attention.

The development time of brushless motor in China is very short, but with the maturity and perfection of technology, it has been developing rapidly. It has been widely used in many fields, such as aircraft models, medical instruments, household appliances, electric vehicles and other fields, and has formed a large scale industrial chain in Shenzhen, Changsha, Shanghai and other places. Such as Shenzhen Weiye motor, Changsha Koda and a number of professional manufacturers, continue to promote the development of technology in technology. In recent years, brushless motor has become a fast developing power in the field of modeling. Because of the production and price, brushless motor used in the middle and high grade aviation model in the past few years, because of the rapid development of machining technology, the production cost of brushless motor has fallen a lot. At present, it is entering all levels of the model field, from electric remote control car to electric remote control ship to electric model aircraft.
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