The stator winding of the brushless DC motor is made of three-phase symmetrical star connection method, and is very similar to that of the three-phase asynchronous brushless DC motor. The rotor of the brushless DC motor which has a stick magnetizing the permanent magnet, for detecting polarity of Brushless DC motor rotor, a position sensor is arranged in the brushless DC motor in. Drive from power electronic devices and integrated circuits, its function is: accept the brushless DC motor start stop brake signal, to control the brushless DC motor to start, stop and brake; accept the position sensor signals and positive signal is used to control the inverter, the power of the on-off, continuous torque accept instructions and speed; speed feedback signal used to control and adjust the speed to provide protection and display and so on.
In the last three decades, the research on the variable frequency speed control of asynchronous brushless DC motor is the method to control the torque of asynchronous brushless DC motor. The rare earth permanent magnet brushless DC brushless DC motor is bound by its wide speed, Small size, high efficiency and steady-state speed error is small in the field of speed control advantages.
Brushless DC motor not only has the characteristics of DC brush motor, but also the frequency change device, it is also known as DC inverter, the international common term for the BLDC. Brushless DC motor operating efficiency, low-speed torque, speed accuracy than any control technology even better than the inverter, it is worth the industry's attention.
Brushless http://www.motor-machinery.com/product/BLDC-stator-winder.htmlDC motor in China's development time is short, but with the technology has become increasingly sophisticated and perfect has been rapid development. Has been widely used in many fields, such as model aircraft, medical equipment, household appliances, electric vehicles, and has begun to take shape in Shenzhen, Changsha, Shanghai and other industrial chain. Motor manufacturers in the professional production technology continue to promote the development of the industry. In recent years, brushless DC motor in the field of rapid development in the model of a driving force. Due to production and price reasons, in the past few years the use of brushless DC motors in the high-end aviation model, now due to the rapid development of machining technology, brushless DC motor production costs decline, it is entering the field of various models Level, from the electric remote control car to the electric remote control ship and then to the electric model aircraft and everywhere.
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Emily