Inclined slots (skewed slots) in the stator are mainly used to improve the electromagnetic performance and operating characteristics of the motor. Specific uses include:
1. Reduce vibration and noise
In induction motors, the chute design can effectively disperse the pulsating torque generated by the harmonic magnetic field, thereby reducing the vibration and noise levels when the motor is running.
2. Reduce torque ripple
In permanent magnet motors or synchronous motors, the stator ramp design helps to evenly distribute magnetic flux and reduce torque ripples caused by magnetic pole alignment and cogging, thereby improving the smoothness and stability of motor operation. efficiency.
3. Suppress harmonic losses
In straight slot motors, the harmonic magnetic field generated by the stator winding will cause additional eddy current losses on the rotor bar. The chute design can reduce these additional losses by changing the relationship between the magnetic field and the relative position of the conductor bar, so that the combined potential of certain harmonics on the rotor is close to zero.
4. Improve motor performance
Chute technology can also help optimize the overall performance of the motor, such as enhancing starting performance, improving power factor, and improving speed range.
5. Summary
the stator chute design is a structural optimization measure that regulates the electromagnetic field distribution inside the motor to achieve the purpose of improving motor efficiency, reducing mechanical stress, reducing noise and improving overall operating quality.
