Hi friends - this is not really a new video, but without errors in english grammar and without an error in animation. Unfortunately all the comments are gone. You get this vid in 4k (UHD)
Very useful and simplified explanation of otherwise quite complicated process of the rotation magnetic field creation and management. Here is very well explained for not advanced users ( such as me).
this is the best video ever about motor capacitor.💯 i watched many video about this topic yet i didn't fully comprehend it. but i do now thanks to you guys 😇.
Although the primary reason for the capacitor is to provide a synthesized second AC source phase to provide the rotating field, a byproduct of the use of capacitor to create the phase shift is also an impedance transformation. This result is lower current and higher voltage on the auxiliary winding. Auxiliary windings often have more turns of wire of smaller wire gauge compared to run winding to optimize for the higher applied voltage / lower current. In the range of 125% the number of turns compared to run winding. This also means the video's statement of 2/3 the field strength in the auxiliary winding is not necessarily correct. The optimum run capacitor value varies in value a bit depending on motor mechanical load. Its value is usually selected for near maximum rated horsepower of motor. When auxiliary windings have more turns than run windings you should not swap run and start winding connections to reverse motor spin direction. Motor will not have same performance in reverse direction.
It´s correct for sure. If the centrifugal switch would disconnect the auxiliary winding, there would be no diffenrence made between run capacitor and start capacitor. Furthermore you need at least 2 windings to get to a RMF.
@@polhpolh64 There are frequency converters especially for single-phase AC motors. The use of a frequency converter for three-phase motors makes no sense here, since the connection for the N conductor is missing here.
Sorry for late reply. I didn't get a notification before but I just stumbled on this video again :) Matter of fact, I've a bunch of cheap single phase AC motors that are dual-speed. If I remember correctly from my prior research, the current goes through extra windings for the slower speed setting, e.g. 3 windings used for high speed, or 6 for low speed. Not 100% sure though.
Hi friends - this is not really a new video, but without errors in english grammar and without an error in animation. Unfortunately all the comments are gone. You get this vid in 4k (UHD)
Wow, this is one of the best videos I’ve ever seen on single phase induction motors!
This is an amazing video. I'm in my second semester to study electrical engineering and this is such a huge help. Thank you.
Excellent Video. Thank you. I really appreciate the improvements!
This channel is gold! Glad i stumbled upon it. Better late, than never.
Thanks
it's really very educational and informative video. thanks
Thanks
nice video on single phase motor
Exactly what i m looking for long.
You are the best. Thank you.
Great work
Thanks for this video😊
Superb explanation...i subscribed
Excellent Video.Thank u
Thks
Excellent explanation. I love this thank you so much
Thks also
Can you explain the high voltage across a motor capacitor
Very useful and simplified explanation of otherwise quite complicated process of the rotation magnetic field creation and management. Here is very well explained for not advanced users ( such as me).
Thks from learnchannel
this is the best video ever about motor capacitor.💯
i watched many video about this topic yet i didn't fully comprehend it.
but i do now thanks to you guys 😇.
Thanks
Thanks
Very intuterive
Have you a video explaining the high voltage across the capacitor. Maybe 1.5 times the supply voltage
Although the primary reason for the capacitor is to provide a synthesized second AC source phase to provide the rotating field, a byproduct of the use of capacitor to create the phase shift is also an impedance transformation. This result is lower current and higher voltage on the auxiliary winding.
Auxiliary windings often have more turns of wire of smaller wire gauge compared to run winding to optimize for the higher applied voltage / lower current. In the range of 125% the number of turns compared to run winding. This also means the video's statement of 2/3 the field strength in the auxiliary winding is not necessarily correct.
The optimum run capacitor value varies in value a bit depending on motor mechanical load. Its value is usually selected for near maximum rated horsepower of motor.
When auxiliary windings have more turns than run windings you should not swap run and start winding connections to reverse motor spin direction. Motor will not have same performance in reverse direction.
Good pronounciation v good video
I consider this vid of one of my best. Thks
Very educational information. Well done. How can I get intouch with your if I need some technical information?
Hi friend, via e-mail. Watch the information about my channwl
Is that the right circuit diagram for the capacitor start motor, i thought the centrifugal switch shud disconnect the aux winding
It´s correct for sure. If the centrifugal switch would disconnect the auxiliary winding, there would be no diffenrence made between run capacitor and start capacitor. Furthermore you need at least 2 windings to get to a RMF.
@@learnchannel-TV ahh ok, ty for clarification. I did not know it was capacitor run motor, i may have missed it while watching the video. Ty
what is the name of that motor model ?
So some motors don't have a starting capacitors? So how they start then?
They start and run with only one and the same capacitor. Disavantage: a low starting torque as shown in this vid.
Are you maybe referring to a shaded pole induction motor?
Hanzhen harnonic drive gear ,robot gear , joint gear reducer, over 30 years experience
good video but the wiring part was a bit lacking.
How can it have two speeds though?!
you cannot switsch between two speeds - the best solution would be a VFD if you want to control the speed.
Could i use a vfd on a single phase motor?
@@polhpolh64 There are frequency converters especially for single-phase AC motors.
The use of a frequency converter for three-phase motors makes no sense here, since the connection for the N conductor is missing here.
Sorry for late reply. I didn't get a notification before but I just stumbled on this video again :) Matter of fact, I've a bunch of cheap single phase AC motors that are dual-speed. If I remember correctly from my prior research, the current goes through extra windings for the slower speed setting, e.g. 3 windings used for high speed, or 6 for low speed. Not 100% sure though.
Statter
Stator