all home built solar system

Author	Message
Warpspeed Guru Joined: 09/08/2007 Location: Australia Posts: 4406	Posted: 09:16pm 13 Jan 2022       Its much easier to sync to the grid, in fact grid tie inverters work exactly that way. A small generator is going to be a real problem, because unless its one of the newer "inverter generator" type, the engine rpm varies with load. As soon as you apply a load, the thing slows down. The rpm/frequency and voltage will be up and down and all over the place, and an inverter has zero chance of keeping up with it. If you need a generator to boost low solar in winter, much better to use it to charge the battery for a few hours as needed. Either that, or plug some or all loads straight into the generator direct. Same with mixing wind, hydro, solar, or whatever.   Much easier to do all your power combining at dc using a few diodes.