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Motor's of the electrical kind

Tallboyshort

All right everybody, my name is Eric Penny you can call me tall boy short. I like to say thank you for adding me to this community rather having me in this community.

I am looking to ask a question about electric motors today what electric motor can have full power, lose its source power, regain that source power and regain full RPM without slowing down to a stop? 

For instance like a bathroom fan you can turn on and off the switch multiple times and the motor will stay relatively at full RPM. But other motors that have capacitance starts and electrical stops do not allow for this to happen.

  • Is there something I can change in the capacitance or the electrical stops to make it like a fan blower.
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  • Motors encompass a very large realm. I'm guessing you arent interested in dc motors, synchronous motors, 3 phase motors , etc,  just ordinary 1 phase induction motors? 

    The reason a blower keeps spinning without power is its relatively large mechanical inertia compared to the frictional losses.

    Pretty much all motors will keeping spinning without power as long as there is no torque being consumed by a load, or bearing friction. They will synch right back to a load dependent  full rpm when power is restored.

    The motors with a capacitor start is for giving the motor a direction to spin when power is applied. The cap switches out after xxx rpm. 

    Likely if you have a motor that goes to zero speed before restarting, a controller is making that decision, or it's got a hefty load or brake stopping it. 

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  • Motors encompass a very large realm. I'm guessing you arent interested in dc motors, synchronous motors, 3 phase motors , etc,  just ordinary 1 phase induction motors? 

    The reason a blower keeps spinning without power is its relatively large mechanical inertia compared to the frictional losses.

    Pretty much all motors will keeping spinning without power as long as there is no torque being consumed by a load, or bearing friction. They will synch right back to a load dependent  full rpm when power is restored.

    The motors with a capacitor start is for giving the motor a direction to spin when power is applied. The cap switches out after xxx rpm. 

    Likely if you have a motor that goes to zero speed before restarting, a controller is making that decision, or it's got a hefty load or brake stopping it. 

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