Thread: Discussion New hyperion motors??
View Single Post
Old Jan 17, 2012, 07:52 PM
Ron van Sommeren is offline
Find More Posts by Ron van Sommeren
homo ludens modellisticus
Ron van Sommeren's Avatar
Netherlands, GE, Nijmegen
Joined Feb 2001
12,038 Posts
Quote:
Originally Posted by DavidN View Post
Current kills is correct and comes from the secondary power equation P=IČ x R.
This is derived from P = I x V
So if I keep current constant but increase voltage. It will still burn up the motor as it is the waste heat that does it....
Nope, it won't burn, losses in the copperwire will remain the same, as per the first equation you gave. Just more power to the prop due to higher rpm.

However, hysteris losses in the stator go up linearly with rpm ('=' voltage) and eddy current losses in the stator go up squared with rpm. At high rpm thinner (currently 0,2mm is standard) and better quality steel statorlaminations must be used.


Vriendelijke groeten Ron
Ron van Sommeren is offline Find More Posts by Ron van Sommeren
Last edited by Ron van Sommeren; Jan 17, 2012 at 08:01 PM.
Reply With Quote