Micro DC motor In the process of long-term use, there will be some loss phenomenon, and these loss phenomenon will continue to affect the motor itself. We will analyze it from the following four angles: 1. The basic iron loss in stator and rotor core of micro DC motor is mainly produced when the main magnetic field changes in the core; 2. Additional or stray losses in the core during no-load operation. It mainly refers to the surface loss caused by the stator and rotor slotting caused by the harmonic magnetic field, the surface loss caused by slotting in the opposite side teeth and the pulse vibration loss caused by the motor rotation; 3. Electrical loss. Micro DC motor refers to the loss caused by working current in winding copper or aluminum, including contact loss of brush on steering gear or collector ring; 4. Additional or stray loss under load. This is due to the leakage magnetic field caused by the working current of stator or rotor, including harmonic magnetic field, various losses caused in stator and rotor windings, close to the core and structural parts. To sum up, the internal loss of micro DC motor is basically caused by the above reasons. Therefore, in order to effectively reduce the loss degree of motor, maintenance can be mainly carried out in these four aspects, so that the maintenance effect will be better.
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