It may be equal to actually being weak !!
Here’s a great article.. Another reason to trust in yourself… read the quote..
“Many of these countries who are moving away from the dollar no longer view America as a stable and reliable force on the world economic stage and they are seeking alternatives as a hedge against a severe future decline in the dollar’s value.”
As this President’s supporters argue the point, the world reacts. Another direct withdraw from your savings?
GB
gas inverter generators are interesting, however for offgrid my thinking is to take what we can learn from them and apply them in a more open architecture scheme.
using my system as an example, and realizing it is not perfect and may not be even useful of others.
i use the changfa s195, and set the speed to 1800rpm (for reasons unimportant to this discussion). it drives two reapplied 110-555jho prestolite leece/neville alternators which started out life as 12volt native, and have been retasked to 24volt nominal operation. the result is a 3 step charging regime controlled by a marine regulator with a nominal output of 5.75kwatt DC (200 amps x 28.8vdc), and a peak output of 7.49kwatts (260 amps x 28.8vdc). the alternator efficiency is quite respectable at a touch over 80% .
i use a microcontroller system to do autostart, monitoring, shutdown, load management and a few other things, it computes the the generation capacity needed and sets the engine rpm to best address that level of need. i use two steps, 1200 and 1800rpm .
this generator system is used to both charge a battery bank and also provide additional DC power to the inverter system.
the end results are interesting in that i can provide for low load conditions with the batteries with a fair efficiency, actually much higher efficiency than if i provided for that level of power from what would be effectively too large a generator.
the generator only runs when the controller calculates that the load is sufficient to keep the generator operating within a predetermined window of maximum efficiency at either 1200 or 1800rpm
the system allows me to
1. limit generator run time
2. reduce noise
3. operate at or near peak efficiency
4. provide power efficiently over a wide range of loads
5. provide power at well under 2% thd
6. provide power at dead on 60hz
7. provide power at very tight voltage regulation.
8. and because of my inverters surge capacity and the batteries
ability to provide very heavy short term current capability, the system can provide easily twice the surge capacity of the genset on its own, and do it without voltage,hz droop or undue distortion.
9. best of all the unit burns less fuel per kwatt/hr electrical delivered to the load, than a similar unit running over a more or less continuous basis to provide for the same loads.
harvest and use the waste heat and you have a very competitive cogen system, that can compete favorably with what the big boys offer.
as previously stated, there are certainly other ways of doing an inverter generator, however i think for offgrid use, we need to include the battery bank and inverter system into the scheme. going further if we want to be responsible citizens and also reduce the cost of operation we ought to also recover and use the waste heat.
bob g