Make a Monophase AC Motor Run: 3 Speeds Fan w/ Digital Logic

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SUMMARY

The discussion centers on operating a monophase induction motor from a fan, specifically a 3-speed fan with digital logic. The user, Phellippe, lacks experience with AC mains powered devices and seeks guidance on wiring and starting the motor from speed 0. The motor's rotor resembles a squirrel cage rotor, indicating its type. Community members suggest reconnecting the motor to its original controller to assess its torque and performance.

PREREQUISITES
  • Understanding of monophase induction motors
  • Basic knowledge of AC mains electrical systems
  • Familiarity with motor control techniques
  • Experience with electrical machinery concepts
NEXT STEPS
  • Research wiring configurations for monophase induction motors
  • Learn about motor controllers and their functionalities
  • Investigate torque characteristics of squirrel cage rotors
  • Explore safety protocols for working with AC mains powered devices
USEFUL FOR

Individuals interested in electrical engineering, hobbyists working with motors, and anyone looking to understand the operation of monophase induction motors in fan applications.

Phellippe Marques
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Hey, everyone,

I got this motor from my fan, I am trying to run it but there are a few more wires that I was expecting. Can someone please give me some light? What are all those wires and how to make ir run.

PS: 3 speeds fan w/ digital logic on the top (taken off)
IMG_9966.JPG
 
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Phellippe Marques said:
Hey, everyone,

I got this motor from my fan, I am trying to run it but there are a few more wires that I was expecting. Can someone please give me some light? What are all those wires and how to make ir run.

PS: 3 speeds fan w/ digital logic on the top (taken off)View attachment 196788
Hi Phellippe,

How much experience do you have working with AC Mains powered devices and motors? What are you hoping to do with this motor?
 
Hey, Thanks for your reply.
I don't have any experience with motors, I just have an idea about how it works, I've already done Electrical Machinery 1 and 2.
But I really don't know how to make it start from speed 0. I opened the stator and I guess its an monophase induction motor because the rotor looks like a squirrel cage rotor.
What I am planing to do? I am not sure yet, first i need to see it working to check how powerful it is
 
Hi Phellippe,

Is it possible to hook the motor back up to its original controller? Set it on high speed and it will develop all the torque it's capable of (not much). Then you can tell if it will have enough for whatever projects you have in mind. But if you can't hook it back up to the controller, post a reply and I'll try to figure something else out. Most of those motors like that are pretty similar and I'm familiar with them.
 
Phellippe Marques said:
Hey, Thanks for your reply.
I don't have any experience with motors, I just have an idea about how it works, I've already done Electrical Machinery 1 and 2.
But I really don't know how to make it start from speed 0. I opened the stator and I guess its an monophase induction motor because the rotor looks like a squirrel cage rotor.
What I am planing to do? I am not sure yet, first i need to see it working to check how powerful it is
In general, we don't like inexperienced folks working with AC Mains projects. I need to close this thread, sorry. Perhaps @Jack of some trades can help you via PMs.
 

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