How does a slip ring motor transform its voltage?

Slip ring motors mainly transform voltage through brushes and collector rings. The brushes are fixed on the rotor shaft and contact the slip ring to connect the rotor circuit to the outside. Collector rings and external rheostat can increase the external resistance of the rotor circuit and increase the resistance at starting, thereby increasing the starting torque. Under normal operating conditions, the through hole slip ring with flange contact each other through the automatic circuit of the metal collar. When the motor is started, the brushes are automatically lifted from the collector ring to avoid friction loss and wear.

Slip ring motor, also known as three-phase wound rotor AC asynchronous motor, its main feature is to connect resistors or reactors in series in the motor rotor circuit to reduce the starting current and increase the starting torque and power factor, thereby effectively Improve the starting performance of the motor. The main function of the slip ring is to connect the electrical components of the rotating body and transmit energy and signals, so as to realize the wire connection during 360-degree rotation and avoid the problem of wire entanglement.


The voltage transformation of slip ring motors needs to be adjusted according to specific application requirements and equipment characteristics. The voltage can usually be adjusted by changing the input voltage to the motor or using a transformer. For example, if the rated voltage of the motor is 220V and the required input voltage is 110V, then a step-down transformer can be used to reduce the input voltage to 110V. At the same time, it is also necessary to ensure that the load of the motor is within a certain range to ensure the normal operation and efficiency of the motor.

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How does a slip ring motor transform its voltage?
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  20-11-2023

  Slip ring motors mainly transform voltage through brushes and collector rings. The brushes are fixed on the rotor shaft and contact the slip ring to connect the

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