Brushless dc motor as a kind of synchronous motor, the rotor speed is the speed of the stator rotating magnetic field and the influence of the number of the rotor. Brushless dc motor has both ac motor has simple structure, reliable operation, convenient maintenance and so on a series of advantages, and dc motor running with high efficiency, speed control performance is good, and many other advantages. Brushless dc motor is the most important part of the control of its structure, its driver can control the rotor to maintain at a certain speed, more stable performance. Brushless dc motor is a kind of small power motor using electronic commutation. Brushless dc motor is widely used in modern production equipment, instruments and meters, computer peripheral equipment and household appliances.
so what are the brushless dc motor performance advantages?
1, high efficiency;
the general efficiency of the brushless dc motor can reach more than 96%, and the efficiency of the traditional dc motor is in commonly 75%; High efficiency, high energy conversion, the electrical energy is converted into motor rotational mechanical energy is high, direct expression is energy-saving, dongguan model aircraft brushless motor than traditional energy saving more than 20%, if it is a long running motor, brushless dc motor using a year can save electricity costs by an electric motor, the long-term use of higher cost performance, although the brushless dc motor start when buying price higher than conventional motor, energy-saving effect is very obvious.
2, long service life;
generally have a tradition of brush motor, because of the wear of carbon brush, after a period of time has to be replaced, frequent maintenance, and brushless dc motor, the service life of 20000 hours or more commonly, under normal working conditions, the use of more than five years, basic not damaged, so the life of the brushless dc motor is 5 times of the traditional motor.
3, low noise;
brushless dc motor with simple structure, the parts precision fitted to install and run more smooth, and run under 50 db voice, many of the medical equipment for silent performance of brushless dc motor adopts brushless dc motor. Need to replace the traditional motor carbon brush, cannot do sealing, carbon brush wear and friction caused by noise, noise generally in more than 60 db, unable to meet the requirements of needs Gao Jingyin equipment.
dc brushless motor has low speed, high torque, intelligent control and so on can communication control performance, more and more get the welcome of equipment manufacturers, with the popularity of consumers for intelligent application, brushless dc motor is bound to get more extensive application.
