From around 32 mins into the video Mr Babcock talks about something very important, the coil's "resistance to change in current" and his solution "zero stating the inductor" This is, put simply, pulsing the coil and collecting the inductive kickback in a capacitor until the coil is discharged so that you always start from a de-energized state in the coil. I have been doing this for some years now but still don't get the desired current I want. This could be because of two reasons as I see it...
1) I am using commutators to provide the pulse and as the motor increases in speed the frequency changes. There does seem to be sweet spots in frequency but at these frequencies my motor does not have significant power as the speed is either too low or too high causing the motor to drop speed dramatically under load taking it off the sweet spot. This is suggesting that I do not have the right inductance for this mechanical setup.
2) I am expecting too much power from the size of motor I am using.
My motor is a 220v 2Kw universal motor but I am driving it with considerably lower voltage.
Any thoughts on this guys?
1) I am using commutators to provide the pulse and as the motor increases in speed the frequency changes. There does seem to be sweet spots in frequency but at these frequencies my motor does not have significant power as the speed is either too low or too high causing the motor to drop speed dramatically under load taking it off the sweet spot. This is suggesting that I do not have the right inductance for this mechanical setup.
2) I am expecting too much power from the size of motor I am using.
My motor is a 220v 2Kw universal motor but I am driving it with considerably lower voltage.
Any thoughts on this guys?
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