Guys:
Thanks for your reply. We are investigating hall-sensor tirggering and magnet ring effects.
There seems to be cumulative error which may be the cause of surging. Do not know for sure.
I will get back with results soon.
Thanks
Rakesh
We have a 3-Phase brushless inverted motor. The rotor is 10.5" in diameter and 2" in length.
The rotor is made of COLD ROLLED DEEP DRAWN LOW CARBON ALLOY 1008/1010 STEEL PER ASTM A-A1008A/A109, 16 GAUGE ( .059").
This has 20 poles - 10 pole pairs. The max spped of the motor is about 500 rpm...
We have a 3-Phase brushless inverted motor. The rotor is 10.5" in diameter and 2" in length.
The rotor is made of COLD ROLLED DEEP DRAWN LOW CARBON ALLOY 1008/1010 STEEL PER ASTM A-A1008A/A109, 16 GAUGE ( .059").
This has 20 poles - 10 pole pairs. The max spped of the motor is about 500 rpm...