Single-phase motors are usually divided into single-phase resistance starting asynchronous motors, single-phase capacitor starting asynchronous motors, single-phase capacitor running asynchronous motors, and single-phase capacitor starting and running asynchronous motors according to the characteristics of the starting and running modes of the motor. , There are five types of single-phase shaded-pole asynchronous motors.
Single-phase motor operation: The first is that the centrifugal switch is not connected to the starting circuit. The starting windings and capacitors not only function during starting, but also during operation, which can improve the power factor and efficiency of single-phase motors. The running performance is better than that of capacitor starter motors.
The capacitance of the capacitor connected to the starting winding of the capacitor running motor is mainly determined according to the operating performance requirements, which is smaller than that determined according to the starting performance requirements. Therefore, the starting performance of this motor is not as good as that of the capacitor starting motor.
The capacitor running motor does not need to start the switch, so the structure is relatively simple and the price is relatively cheap. It is mainly used in electric fans, air conditioner fan motors, washing machines and other motors.
The second is to connect the centrifugal switch in the starting circuit. This connection method is generally used in places with large and unstable loads such as air compressors, cutting machines, and woodworking machine tools.
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