I’m sightseeing nyc today and found this motor
FAQ:
1) Where can learn more about batteries? http://j35.us/DIYlithiumBatteryBook
2) Where can I buy Lithium Batteries https://j35.us/Lithium-July
3) Where Can I buy Solar Panels? Flexible - http://j35.us/136wFlexSolarPanl
Glass - http://j35.us/100w-100-solar
DIY - http://j35.us/DIY-Solar-cells
4) Where can I buy a Battery Management System? http://j35.us/Batrium
5) What motor does your VW bus use? http://j35.us/HPEVS-AC51-Motor
6) What parts do you use on your Samba? https://j35.us/eSambaProj
7) What is the best fuse wire? I only use 1/8w resistor legs http://j35.us/ResistorLegs
8) Why not use Supercapacitors?
A. Batteries work better at this time, caps are rare and expensive devices that are very good at doing things not needed for storage systems typically.
FAQ:
1) Where can learn more about batteries? http://j35.us/DIYlithiumBatteryBook
2) Where can I buy Lithium Batteries https://j35.us/Lithium-July
3) Where Can I buy Solar Panels? Flexible - http://j35.us/136wFlexSolarPanl
Glass - http://j35.us/100w-100-solar
DIY - http://j35.us/DIY-Solar-cells
4) Where can I buy a Battery Management System? http://j35.us/Batrium
5) What motor does your VW bus use? http://j35.us/HPEVS-AC51-Motor
6) What parts do you use on your Samba? https://j35.us/eSambaProj
7) What is the best fuse wire? I only use 1/8w resistor legs http://j35.us/ResistorLegs
8) Why not use Supercapacitors?
A. Batteries work better at this time, caps are rare and expensive devices that are very good at doing things not needed for storage systems typically.
Before the 90s almost all elevators used dc motors due to the ease of operation, (acceleration and deceleration)
La armadura está en rotor, es CD corriente directa, de hecho se parece mucho a los motores de locomotoras de los 70s y 80s, saludos desde Mexico
Nice to see that even more people are interested in large electric motors.
It would be dc. Because AC is not as controllable as DC.
There is not enough left of the motor to relly tell the difference it could just be the rotor of a DC traction motor the wire is green indicating copper sulfate for lack of just saying the copper is rusty or. Coroded but I don't see any commuter for which the brush as are or just a simple armature where the cast iron case broke off in the impact of the twin tower collapsing ..it looks to me like a three phase a.c. motor with the cast iron case shattered on impact because there is no commuter on the shaft but dc motors were very common in ainchent years. one thing I can confirm is a ugly Coroded basket of copper in there ..
to start slowly in an AC motor 1.) likely there is small DC motor attached to it to start the electromagnetic field rotation and or it had several capacitors in it that let loose slightly out of phase before AC current was applied to the motor or B.) The current to the motor was regulated at the start at a lower flow so that the EMF starts to rotate slow and then speeds up as the elevator is on its way to full current. a programmed variable frequency drive could have also accomplished this but I don't know if they were a thing back them probably not.
that is just a rotor, not a motor.
Talk about hybrid motor is ac motor with syncrons , example( weg w22 magnet) i see only but is good?
I used to work on a diesel electric drilling rig
And they used two big dc motors like that with variable speed and so so powerfull
My guess it would be ac since they stoped supplying dc early 1900s consult a certified electrican for certain
Baground music name
Song name
That is the armature from a gear-less DC elevator motor. The cables for the elevator wrapped around the one side and the commutator (missing the copper bars) was on the other side. It was most likely a 500VDC armature. This damage is not from the tower collapse! The cause of failure looks to be from when the car fell, the centrifugal force threw the copper out of the slots and commutator bars were also thrown out. All that is left of the commutator is the V-Ring assembly (two angled pieces connected with through bolts). The motor did not spin very fast during normal operation, maybe less than 900 RPM but during the elevators free fall who knows but VERY fast maybe 3000 + RPM.
I was on the fence on this one. I looked like a DC rotor, but it might have been from a wound-rotor induction motor. I did not see evidence of a DC commutator or AC slip rings either. Google has other images that show this, or a sister rotor, still inside the stator. The stator is very clearly a DC stator with field poles. I used to repair motors for GE. I have seen a LOT of broken motors.
how can I calculate how much torque I need to tow over 15,000 pounds?