How can affect the ripple in the amount of vibrations in one DC Motor
How can affect the ripple in the amount of vibrations in one DC Motor
(OP)
Hello all
Really I have two questions, first is pro and cons of use today new DC motor feeded with an old converter(20 years) and how can affect the ripple in the amount of vibrations in a DC Motor.
TRhanks for the Inputs
Regards
Carlos
Really I have two questions, first is pro and cons of use today new DC motor feeded with an old converter(20 years) and how can affect the ripple in the amount of vibrations in a DC Motor.
TRhanks for the Inputs
Regards
Carlos





RE: How can affect the ripple in the amount of vibrations in one DC Motor
There is one possible difference between old and new rectifiers, the new digital ones usually have a better gating pulse symmetry and that reduces the possible amount of low frequency ripple in the DC current. The amount of 300 or 360 Hz ripple remains the same.
New DC motors usually have better data than old ones. Efficiency is better, overcurrent capability is better. They tolerate overspeed better and commutation is 'darker'. I speak mostly about the ones I have used lately (the ABB DMI motors), but I imagine that other suppliers also have improved their machines.
Gunnar Englund
www.gke.org
--------------------------------------
100 % recycled posting: Electrons, ideas, finger-tips have been used over and over again...