The single-phase induction motor operates under the same principles as its polyphase counterpart with one key distinction – the rotating magnetic field produced by the stator only exists once the running rotations per minute (rpm) is reached. This motor type requires an initial starter mechanism as it does not offer a starting torque. Here are some of the various designations:
Крывыя крутоўнага моманту розных аднафазных асінхронных рухавікоў
Маторы з зацененым полюсам
Shaded-pole motors only have one main winding and no start winding. This unique configuration changes the magnetic field in relation to the rotor, creating starting torque. These motors are often used in fans and small appliances.
Split-Phase (Induction Start Engine)
Split-phase motors feature two types of stator windings. The “start” windings are positioned 90 degrees to the “run” windings and shift the stator’s magnetic field, inducing the starting torque. These motors are commonly used in small grinders, fans, and blowers.
Кандэнсатарныя пускавыя рухавікі
Capacitor-start motors are a staple in industrial applications. This modified split-phase motor includes a capacitor in series with the start winding to provide a start boost. They are found in small conveyors, large blowers, pumps, and single phase induction motor direct-drives.
Рухавікі з пастаянным падзелам кандэнсатара (PSC).
The PSC motors utilize identical main and auxiliary windings with a capacitor to provide starting torque. These motors are the most reliable single-phase motors as they do not require a centrifugal starting switch. They are typically used in fans and pumps in HVAC and refrigeration industries.
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Часта задаюць пытанні
1. What applications are suitable for a shaded-pole motor?
Shaded-pole motors are typically used in fans and small appliances due to their unique configuration that creates starting torque.
2. How does a capacitor-start motor operate?
A capacitor-start motor is a modified split-phase motor that includes a capacitor in series with the start winding to provide a start boost.
3. Why are Permanent-Split-Capacitor (PSC) motors considered the most reliable?
PSC motors are considered the most reliable single-phase motors as they do not require a centrifugal starting switch, reducing potential points of failure.