Re: Solid state voltage regulator for a generator

Posted by Gerald J. on December 31, 2004 at 06:47:00 from (67.0.108.37):

In Reply to: Re: Solid state voltage regulator for a generator posted by Bob on December 30, 2004 at 19:16:39:

In the alternator, the rotor is the field. In the generator, the field is the stator. Works the same. Except the rectifiers in the alternator also do the cut out function while the rectifier in the generator (the commutator and brushes) doesn't do the cutout function. I found that the diode cutout was far superior to the relay cutout because at 6 volts it didn't take 10 amps reverse current to trip it out.

When I last posted, I forgot that I did a solid state regulator for the turbine generator and the Boone and Scenic Valley Chinese locomotive a couple years ago. That generator was rated to do 50 volts but they used up the world supply of 50 volt quartz lamps and now use 32 volt quartz lamps and my regulator keeps them working far longer than trying to regulate the voltage by steam pressure alone on the turbine.

For 6 volts my MOSFET would have to be logic rated and I might have problems turning it off from my chosen regulator IC.

The relay type voltage regulators were allowed to hold a 12 volt system between 12 and 15 volts, a 6 volt system between 6 and 7.5 volts. The battery is happiest at 14.2 volts or 7.1 volts and gives far better life so the solid state regulator that does that precision is far better for the battery (and the lights).

Gerald J.

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