DC Motor Test Help
DC Motor Test Help
(OP)
Hello friends;
I must prove that our DC motor (1.2kW @ 6000rpm) provides the needed torque depends on the rotational speed. For this reason; a torque should be applied by another DC or AC motor, while measuring the rotational torque.
Firstly, in this application should I use AC or DC motor?
Could I use servo motor+driver? (I think there occurs an error in driver, even so I want to ask...)
Could a brake motor operate while accelerating?
Thanks for replies...
I must prove that our DC motor (1.2kW @ 6000rpm) provides the needed torque depends on the rotational speed. For this reason; a torque should be applied by another DC or AC motor, while measuring the rotational torque.
Firstly, in this application should I use AC or DC motor?
Could I use servo motor+driver? (I think there occurs an error in driver, even so I want to ask...)
Could a brake motor operate while accelerating?
Thanks for replies...





RE: DC Motor Test Help
It would make more economic sense to take your motor to a motor test shop and use their dynamometer.
----------------------------------
If we learn from our mistakes I'm getting a great education!
RE: DC Motor Test Help
USE AT YOUR OWN RISK!!
http://my
Bill
--------------------
"Why not the best?"
Jimmy Carter
RE: DC Motor Test Help
----------------------------------
If we learn from our mistakes I'm getting a great education!
RE: DC Motor Test Help
The North American standard is Air applied, spring released.
Scotty's suggestion is valid, but if the brake you find is North American pattern, just go with it.
Bill
--------------------
"Why not the best?"
Jimmy Carter
RE: DC Motor Test Help
But I should measure the torque simultaneously and certificate the results. Could I adjust the load torque for this brake system with 2 or 3Nm precision?
Also I've searched for some dynamometer test stands as ScottyUK told. I've found magtrol dynamometers. It exceeds the load torque need for the system, but motor could handle this torque. So I could prove that motor power is adequate.
Secondly a torque measurement system, and a physical brake system as you mentioned (truck brake etc.) can be considered. But in this case I should convert this system to a close loop system. It will take more and more time. And time is limited.
What do you think, which method is suitable?
RE: DC Motor Test Help
RE: DC Motor Test Help
----------------------------------
If we learn from our mistakes I'm getting a great education!
RE: DC Motor Test Help
For testing and burning in their drives, they used two AC motors, one 1800 RPM and the other 1200 RPM coupled together to provide a load for the AC drive (the drive was connected to the 1800 RPM motor).
This provided a load for the drive and regenerated some of the otherwise wasted energy back into the system. It worked very well. 6000 RPM might be a bit tricky though...
As for measuring your load, the Autogard folks make a coupling that transmits its torque to a receiver.
http:/
Or just buy a small Eddy Current Dynamometer.