What is the definition and working principle of the motor commutator
The motor commutator is a current commutator composed of commutator, mica, V-shaped insulating ring, pressure ring and fasteners on the DC rotor. The commutator, commonly known as the commutator. It is a component of the DC permanent magnet series excitation motor in order to allow the motor to continue to rotate. The commutator includes: mechanical commutator, semi-plastic commutator, full plastic commutator. The principle is that when a current is passed, it will be rotated by attraction and repulsion under the action of a permanent magnet. When it turns to balance with the magnet, the originally energized line corresponds to the contact piece on the commutator. The brushes are separated, and the brushes are connected to the corresponding contact pieces that correspond to the set of driving forces. In this way, the DC motor rotates. If there is no effect of the commutator, the motor can only be locked within half a turn, and can only be used as an electric brake.
Generally speaking, DC motors only have commutators. The commutator is an important part of the DC motor. It converts the DC current passing through the brush into an alternating current in the winding or converts the alternating electromotive force in the winding into a DC electromotive force on the brush end. In addition, it should be understood that the structure of the motor commutator is a component on the DC permanent magnet string excitation in order to allow the electric idea to continue to roll down. Structurally, the commutator is composed of several contact pieces in a circle, which are connected to each contact on the rotor. The two electrodes connected outside are called brushes, and only two of them are in contact. The principle of the commutator is that when the coil passes the current, it will roll through the attraction and repulsion force under the action of the permanent magnet. When it turns to balance with the magnet, the originally energized line is more corresponding to the commutator. The contact piece is separated from the brush, and the brush is connected to the contact piece corresponding to the set of coils that generate the driving force. In this way, the DC idea is turned.