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The status quo of brushless DC motors in the industry
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- Time of issue:2021-08-09 15:42
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The status quo of brushless DC motors in the industry
- Categories:News
- Author:
- Origin:
- Time of issue:2021-08-09 15:42
- Views:
The brushless DC motor maintains the excellent control characteristics of the brushed DC motor, and the electromagnetic structure is the same as the brushed DC motor, but its armature winding is placed on the stator, and the permanent magnet is placed on the rotor. The armature winding of the brushless DC motor is like the winding of the AC motor. It adopts a multi-phase form and is connected to the DC power supply through the driver. The stator uses a position sensor to achieve electronic commutation instead of the brushes and commutators of the brush motor. Successive energization generates current, which interacts with the main magnetic field of the rotor pole to generate torque.
Therefore, in advanced industrial countries, the brush DC motors in the industrial automation field have been gradually replaced by brushless DC motors. Nowadays, in the equipment imported from abroad, it is rarely seen that the brushed DC motor is used as the execution motor system. Related companies in these countries (such as the United States, Britain, Japan, Germany, etc.) no longer mass-produce brushed DC motors for servo drives.
In industrial applications, brushless DC motors have obvious advantages in terms of speed, controllability, reliability, small size, light weight, energy saving, efficiency, environmental tolerance and economy. In recent years, with the continuous improvement of the performance-to-price ratio of rare earth permanent magnet materials and power electronic devices, brushless DC motors have become more and more widely used in industry as medium and small power high-performance speed-regulating motors and servo motors.
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