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The Advantages and Commutation of Permanent Magnet DC Speed Reducing Motor

May 08, 2018

In the process of working, permanent magnet DC speed reducing motor is mainly effective in the alternating electromotive force induced in its armature coil. In operation, the permanent magnet DC speed reduction motor mainly depends on the commutation function of the commutator and the brush. It can be changed from the brush end to the principle of direct current emf.

The direction of the force of the conductor of the permanent magnet DC speed reducing motor is mainly determined by the left-hand rule during the operation, and the pair of electromagnetic forces will directly form a moment on the armature during use. This torque is called the electromagnetic torque in the rotary motor, and the direction of the torque is counterclockwise, in an attempt to rotate the armature counterclockwise.

Advantages of Permanent Magnet DC Speed Reducing Motor

Permanent-magnet DC geared motors have a fast response and a relatively large starting torque to a certain degree. During operation, they have the performance to provide rated torque from zero speed to rated speed. When the operation is performed, the DC motor needs to generate DC motors. Constant torque performance under rated load, then the armature magnetic field and the rotor magnetic field must be maintained at 90 °, which will require carbon brush and commutator.

The carbon brush and the integral flow of the permanent magnet DC speed reducing motor effectively generate sparks during the rotation of the motor. In operation, the carbon powder will not only cause damage to its components, but also its use when it is used. It will also be limited, its AC motor does not have its carbon brush and commutator, maintenance-free, sturdy and widely used, but the characteristics to achieve the equivalent of DC motor performance must be achieved using sophisticated control technology.

The current development of semiconductors is very rapid. In the course of use, the switching frequency of power components is much faster, and the performance of the drive motor is improved. The speed of the microprocessor is also getting faster and faster. It is possible to place the AC motor control in a rotating two-axis orthogonal coordinate system, and properly control the AC motor's current component in two axes to achieve similar DC motor control and the DC motor equivalent. performance.