Speed control of Induction motor.
Speed control of Induction motor.
(OP)
Hi,
Would like anyone out there who could provide me
a circuit on to increase the rpm of the following
motor,
Brand name : Oriental Motors 6W, 230V, 50HZ, REV:120RPM.
I believe the speed can be controlled by changing
the frequency. I am operating this motor at 230VAC
50 HZ, and I am quite confident that if I add a frequency
converting circuit to the motor, speed control can be
effected.
Appreciate your inputs on this issue.
Thanks





RE: Speed control of Induction motor.
However, as you decrease frequency, you should also decrease voltage proportionately to avoid increasing volts/hz (causes core overheating),
Increasing speed may require increasing voltage (may be risky if more than 20% increase) to avoid stall, and also may pose mechanical challenges to the motor and/or load. (centrifigual force is proportional to speed-squared).
Also, if your source produces harmonics or voltage spikes, those may be damaging to the motor (filtering may be required).
RE: Speed control of Induction motor.
Thank you for your valuble inputs. I would appreciate
if you could send in some circuits or appropriate websites
that deals in this subject.
Thanks
Chandran.
RE: Speed control of Induction motor.
RE: Speed control of Induction motor.
There's a copyright notice in front, but it is available for downloading for the time being.
http://nema.org/engineering/icsstandards/acadjustable.pdf
RE: Speed control of Induction motor.
Thanks for your help
Chandra