2022-07-07 14:03:51
Can the motor run without a commutator?bldc motor controller ， The answer is definitely not. A brushless DC motor driver can perform the function of an electronic commutator. Compared with brushed motors, it is more convenient to control and maintenance-free. Brushless DC motors are mainly divided into three control methods
1. Square wave control. Using Hall sensor or sensorless estimation methods, a square wave is obtained to control the position of the rotor of the motor, and the motor outputs a force in a specific direction at each commutation position. In this control mode, the phase current waveform of the motor is close to a square wave, so it is called square wave control.
2. Sine wave control, using space vector pulse width modulation wave to output three-phase sine wave voltage, the corresponding current is also sine wave current.
3. FOC control can realize voltage vector control and indirectly control current, but cannot control current direction.
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