3HNA017678-001同步电机原装-电子快手网资讯-电子快手网

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Reflect the relationship between the capacity of inverter and the total output power of motor. If the output power of the motor is constant, the capacity of the inverter connected to the control windings will be greatly reduced, and the influence of the inverter on the power grid will be reduced. As a special motor, the design of brushless doubly-fed machine (BDFM) is quite different from the traditional wen-liu motor. The number of pole pairs determines the speed of the motor, so the number of pole pairs of power windings and control windings can be selected reasonably according to the speed requirement. When the double-fed operation, the relationship between the motor speed and the pole logarithm is called the synchronous speed of the motor. According to the working principle of the motor, the winding with more pairs of Poles is usually chosen as the main winding to bear most of the power of the motor, and the winding with less pairs of Poles is used to bear the excitation power. In order to avoid the asymmetrical magnetic pull and electromagnetic noise caused by the magnetic fields with two different pole pairs coexisting in the same motor. The rotor of brushless doubly-fed machine (BDFM) is designed with different pairs of stator primary and secondary windings. The effect of the "pole-to-log converter" directly affects the performance of BDFM. Compared with the high-voltage inverter system, the brushless doubly-fed machine can be used as a common asynchronous motor when the inverter fails, which is very important for those occasions where no shutdown is allowed. But the brushless doubly-fed machine also has the limitation, when the design needs according to the concrete request synthesis consideration. If the speed is increased, the volume of the motor will be greatly increased and the manufacture will be more difficult.

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