The efficiency of an electric generator seems to peak at 75% of max power and drops off strongly under 25%. As the power output drops the power factor also gets worse. Utility companies will charge more for the electricity, for example, for motors that have poor power factors because it costs more. Capacitors are used to correct this, among other mean depending on generator type.
If the duty cycle is for 25kw power generation while on the grid, and 1-3 kw while off the grid, with peaks (for starting motors and such) reaching 3-10 kw, what type of electric generator should one use to cover the range? If two generators are used with one in the 1-3 range and another optimized for 25kw, how can peak short duration loads be dealt with? Is there a one generator option, or will it take 2-3 different generators all driven by the same prime mover at different gear ratios or some sort?
The prime mover to drive the generators is a new engine that has a level BSFC curve from 1-35kw and can be effective across the duty cycle range. All of the electric generators I know of, however, cannot do the range. The cost for electricity in the 1-3 kw range therefore doubles or triples over the cost at 25kw when the generator is optimized at 25kw. Herein is the key to home power generation. We have half the key in the right prime mover, the other half is in the electric generator.
Is there any company or inventor out there who has the electric generator required to cover the range? An Asynchronous generator will not work for situations where it is greater than 1/3 the total power generation. Is this something that needs to be invented, or does it exist? I am looking for consultants to figure this out. Comments please.
Efficiency of an Electric Generator
Generator-Power
