View Single Post
Old 10-07-2014, 11:39 PM   #1175 (permalink)
MPaulHolmes
PaulH
 
MPaulHolmes's Avatar
 
Join Date: Feb 2008
Location: Maricopa, AZ (sort of. Actually outside of town)
Posts: 3,832

Michael's Electric Beetle - '71 Volkswagen Superbeetle 500000
Thanks: 1,368
Thanked 1,202 Times in 765 Posts
The books way of doing it was to run the motor unloaded for one test, and then locked rotor for another test. From those two tests, you deduce like 15 different things. One of those is the rotor resistance (like number 15 in that train wreck process.). We still need the rotor inductance. Then the time constant is L/R.
__________________
kits and boards
  Reply With Quote