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Basic knowledge about the motor(2)

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Basic knowledge about the motor(2)
Latest company news about Basic knowledge about the motor(2)


5. In a DC motor, the components of a single-stack winding are connected in series by one on top of the other. Whether single-wave or single-stack winding, the commutator segments connect all the components to form a single closed loop.


6. Asynchronous motors are also called induction motors because the rotor current of asynchronous motors is generated by electromagnetic induction.


7. When the asynchronous motor is stepped down, the starting torque is reduced, and the starting torque is reduced in proportion to the square of the starting current of the winding.


8. When the amplitude and frequency of the primary side voltage are constant, the saturation degree of the transformer's core is basically constant, and the excitation reactance is also basically unchanged.


9. The short-circuit characteristic of the synchronous generator is a straight line. When the three-phase symmetrical short circuit occurs, the magnetic circuit is unsaturated; when the three-phase symmetrical steady-state short circuit, the short circuit is a purely demagnetized direct-axis component.

 

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Pub Time : 2019-04-24 08:54:05 >> News list
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