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| tautech:
--- Quote from: Wrenches of Death on July 10, 2023, 04:02:17 am ---I've paralleled a pair of gasoline driven 5000 watt AC generators before, too. --- End quote --- :o With no regard to phasing ? :scared: |
| SoundTech-LG:
--- Quote from: Wrenches of Death on July 10, 2023, 04:02:17 am --- --- Quote from: tautech on July 10, 2023, 03:32:25 am --- Fine if you have 2 similarly capable welders however I never have. For a while I had a 180A, 300A and a 250A DC TIG however they all had different control circuitry of which I would never dare to run them in parallel. :scared: Now with just the big 400A on castors and a 180A MIG, 140A caddy and gas set there's not much I can't handle. TIG I don't really need. The big 400A was needed for the occasional heavy fab job however most of its work is just maintenance and repair. --- End quote --- No control circuitry in either of these. One is straight AC and one is and AC/DC machine. Easy to parallel when running AC. Lincoln engine driven SA-200 and 300 DC machines even easier to parallel. None of that phase stuff to have to pay attention to. :) I've paralleled a pair of gasoline driven 5000 watt AC generators before, too. You got me to thinking about all that heat. Somewhere around here I still have a pair of thick gauntlet style asbestos gloves. Most people today wouldn't even recognize them for what they are. I doubt you could even buy a pair if your life depended on it. WoD --- End quote --- https://www.ebay.com/itm/126008474979?hash=item1d56b0bd63:g:df0AAOSwAzNkn3it&amdata=enc%3AAQAIAAAAwNh26bYIlfCyMPcpMMkmEpvJXZLVaDauFN9up%2F1MntbTuEPzevnf3v7BV%2BfJ%2FidgNH8Zc04wvtOZDd%2Bi5ZMs61JJPNEeZ6TKFJB0GMWCsYyeB1mU8awthADWNqCNicAOIwuSNwC%2BslsJaSCGVbQ7jRk1tFXnJ5dNT16H5moTJVgevXvTIc4gyRz3En0P3EfJSyIsLxyxSTs97helb0JTt4rx9NAsQXVKUtiVfX%2BkRA50ZiIQpXp2DQJ6EjSphNqUxQ%3D%3D%7Ctkp%3ABk9SR7qYl-CnYg |
| Wrenches of Death:
--- Quote from: tautech on July 10, 2023, 04:13:32 am --- --- Quote from: Wrenches of Death on July 10, 2023, 04:02:17 am ---I've paralleled a pair of gasoline driven 5000 watt AC generators before, too. --- End quote --- :o With no regard to phasing ? :scared: --- End quote --- No, you have to pay attention to phasing with AC. WoD |
| tautech:
--- Quote from: Wrenches of Death on July 10, 2023, 04:24:28 am --- --- Quote from: tautech on July 10, 2023, 04:13:32 am --- --- Quote from: Wrenches of Death on July 10, 2023, 04:02:17 am ---I've paralleled a pair of gasoline driven 5000 watt AC generators before, too. --- End quote --- :o With no regard to phasing ? :scared: --- End quote --- No, you have to pay attention to phasing with AC. WoD --- End quote --- And rev matching too for them to properly share the load. |
| Wrenches of Death:
--- Quote from: tautech on July 10, 2023, 04:33:15 am --- And rev matching too for them to properly share the load. --- End quote --- Both need to be turning the same speed to match the frequency. Once they have synced, they will tend to stay that way. Same frequency, same speed, same rpm. Rotor current/voltage could be tinkered with to tweak the actual output voltage, but not speed. I did that some years back on my PTO driven genset. I changed the value of a couple of capacitors to lower the output voltage by five volts or so. I just had a thought. Since 60Hz is the standard here, most generators run at either 1800 or 3600 rpm. You guys have a 50Hz standard. I'm guessing that gensets there run at 1500 or 3000 rpm. It'll take a more engine to product the same number of watts at a lower speed. WoD |
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