Hi All,
I scrounged up an old forklift charger. It works, but the regulation isn't quite what I want. It floats up to 15.1V when it starts ramping down to about 30 amps. It doesn't have any regulator circuitry, just transformer, diodes and caps. How the heck does this thing regulate? I'm guessing it has to do with the transformer core, but can anyone shed a little light on how it works?
I was wondering if I could use SSRs to regulate the output? I use a scheme like this on my buddys hydronic floor heating. He has a backup electric flash heater, and what we do is PWM a SSR that is connected to the second element in the heater. Now, I know that with an inductive load, I may generate some spikes. These are zero crossing SSRs though, so would I really make any more noise? If the SSR route will work, should I PWM both legs (I'm running it on 220V from a generator) or just one?
I'd rather not control the DC side, 100 amps is a lot of juice to switch.
Thanks!
Jonathan