Of the structure and principle of the brushless motor
a, what is the brushless motor
the body of the brushless dc motor by the motor and drive. Brushless motor is a kind of typical mechatronics product. Because of the control of the brushless dc motor is running, so don't like the synchronous motor frequency conversion brushless motor, such as the rotor and starting winding brushless motor does not produce oscillation and load step mutation. Brushless motor, low-power brushless dc motor, permanent magnet brushless motor high now rare earth ndfeb magnetic energy product (Ndfeb)The use of materials. As a result, the volume of rare earth permanent magnet brushless motor to reduce the frame size than with the capacity of three-phase asynchronous motor.
2, brushless motor structure analysis
the structure of the brushless motor, brushless motors and brushless motor, brushless motor rotor and stator brushless motor brushless motor structure is just the opposite; Brushless motor rotor is connected to the coil winding brushless motor and power output shaft, and the permanent magnet brushless motor stator rotor magnet; Is the permanent magnet brushless motor, connected to the shell output shaft, brushless motor stator winding coil, brushless motor brushless motor reverse electric alternating magnetic field choice, brushless motor brushless motor (Brushless motor)。
3, the operation principle of brushless motor
simple brushless motor, brushless motor by changing the input of the frequency of the alternating current waveform and waveform brushless motor stator winding, brushless motor winding coil in the magnetic field around the form around the motor, brushless motor rotation axis, geometry driving magnetic field of permanent magnet rotor rotating motor, brushless dc motor to turn up, dongguan quantity, performance and the flux of the magnetic field intensity, the input voltage of motor brushless motor, brushless dc motor and brushless motor control performance has much to do, because the input is a dc brushless motor brushless direct current motor, now need to be electronic governor point of brushless dc motor, also needs to receive signals from the control of the remote control, brushless motor control motor speed, meet the needs of the brushless motor used. Brushless motor, brushless motor structure is simple, using decision physical or brushless electronic governor performance brushless motor, brushless motor, there is no need to have good overall control of the electronic speed motor control program design, circuit design, complex process, so the price of the brushless motor is much higher than a brush motor.