What is the difference between a brushless ac motor and a brushless dc motor?
The difference between brushless and brush is commonly used for dc motors. The ac motor does not have a brush and no brush.
, dc motor has direct current, ac motor is alternating current; 2, dc motors need to be replaced by brush and brushless. The brushless dc motor is replaced by a commutator, and the brushless motor is replaced by the logic of the circuit. Three, ac motor is divided into three phase ac motor (split: synchronous and asynchronous), single phase ac motor. 4, the difference between ac induction motor and synchronous motor rotor asynchronous motor is a magnetic material (usually for copper, aluminum), the rotor is a permanent magnet synchronous motor (or the equivalent of the permanent magnet).
Single-phase ac motors and dc motors: the difference between rotor and stator single-phase dc motor is a permanent magnet (or equivalent of a permanent magnet, namely: fixed polarity does not change), and the single phase ac motor rotor is a magnet, also do not need electricity normally (cage). If a single phase ac is connected to a brushless dc machine, no power transfer is required. Other: no brush, brush the difference: the brushless motor is a special kind of dc motor, it USES built-in sensors electronic commutation on the method of the electronic commutator, brushless motor is mainly in order to eliminate the wear and tear of the brush, and brush contact generated noise. A brushless motor, coil and the commutator rotating, magnetic steel and carbon brush don't turn, is the direction of the coil current changes with the motor rotation phase switcher and brush. A brush motor has a carbon brush, a brushless motor without a carbon brush
Our company's no brush ac motor is the largest in the country. There is no much difference in composition, for maintenance and low maintenance requirements, stator winding heat dissipation is more convenient, moment of inertia is small, easy to improve the quickness of bellows coupling system, suitable for high speed large torque working condition, with the power of a relatively small volume and weight.
