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Re: ASRSG question

Original poster: "Gerald  Reynolds" <gerryreynolds@xxxxxxxxxxxxx>

David.

One idea that crossed my mind is that your 1/4 inch electrode gap may be part of the problem.
At 3500rpm and 8 electodes, you will have 467 pps. I dont know what size of Cap you are using but maybe at 467pps, the cap cant be charged high enough to break across a 1/4 in gap. Does it run at a lower rpm. Try 240pps. I would not go down to 120 pps with an ARSG since the phase may accidently linger at zero cross over and this could cause an uncontrolled voltage rise if any of the ferromagnetics start to saturate. If you electrically connect all rotor electrodes together, you will be able to go to two static electrodes and reduce the total gap distance to 1/8 inch.

What is the PIG ballasted at and what is your Cp value?

Gerry R.


Original poster: "David Rieben" <drieben@xxxxxxxxxxxxxxx>


No, I'm using 8 rotary electrodes driven on a 11 1/2" diameter
x 1/2" electrical grade fiberglass disc. The motor is a variable
speed 0 - 130 VDC, 2.5 HP treadmill duty motor that is rated
at 3500 rpm.