Synchronous motor for motor running. As the synchronous motor field current can be adjusted to make it run under power factor in the advance, will help to improve the grid power factor, therefore, large equipment, such as large fans, pumps, ball mills, compressors, rolling mills, etc., used Synchronous motor drive. Large-scale equipment using low-speed synchronous motor when the advantage is particularly prominent. In addition, the synchronous motor speed completely determined by the power frequency. Certain frequency, the motor speed also certain that it does not change with the load while. This feature in some of the transmission system, in particular multi-machine synchronous speed drive system and precision speed control system stability is important. Synchronous motor operating stability is relatively high. Synchronous motor is usually run in the overexcited state, its overload capacity than the corresponding large induction motors. Induction motor torque and voltage proportional to the square, while the Synchronous motor torque depends on voltage and current of electrical excitation within the electromotive force generated by the product, that is, one side only with the voltage proportional to. When the grid voltage suddenly dropped to about 80% of rated value, the induction motor torque is often reduced to about 64%, and because with a fixed load and stop running; the Synchronous motor torque has dropped much, you can also force excitation to ensure stable operation of the motor.

Synchronous Motor

Synchronous Motor

Synchronous Motor