Rc Brushless Motor

- Feb 22, 2021-

The rc brushless motor is composed of the motor body and the driver. A typical electromechanical product. The stator windings of the motor are mostly made of three-phase symmetrical star connection. It is very similar to the three-phase asynchronous motor. The magnetized permanent magnet is stuck on the motor rotor. Detection of the motor rotor The position sensor driver installed in the polarity motor is composed of power electronics and integrated circuits. Its functions: receive the motor start, stop, and brake signals to control the motor start, stop and brake; receive the position sensor signal and the forward and reverse signals to control the reverse Each power tube of the variable bridge is switched on and off to generate continuous torque; it accepts speed commands and speed feedback signals to control and adjust the speed; provides protection and display, etc. Because the brushless DC motor is automatically controlled, it will be like a heavy load start under variable frequency speed regulation. The addition of a start winding to the synchronous motor-like rotor will also cause oscillation and out-of-step when the load changes suddenly. Small-capacity brushless DC motors often use high-energy product rare earth neodymium iron boron (Nd-Fe-B) materials, so rare earth permanent magnets are not The size of the brush motor is smaller than that of the three-phase asynchronous motor of the same capacity. In the past 30 years, the research on the variable frequency speed regulation of the asynchronous motor has finally found the method of controlling the torque of the asynchronous motor. The rare earth permanent magnet brushless DC motor must have wide speed regulation and small size. , High efficiency and small steady-state speed error, etc., showing advantages in the field of speed regulation


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