Sunday, March 13, 2011

RE: [Electric Boats] Inverter Duty versus Standard Duty Generators

 

Yes…and you can purchase "tri-fuel kits" or configure/assemble your own similar configurations that allow either or all of propane, natural gas and gas firing.

See this YouTube video or search the above term: http://www.youtube.com/watch?v=MNaGW5SOPas

-mt

 

From: electricboats@yahoogroups.com [mailto:electricboats@yahoogroups.com] On Behalf Of greenpjs04
Sent: Sunday, March 13, 2011 10:15 AM
To: electricboats@yahoogroups.com
Subject: Re: [Electric Boats] Inverter Duty versus Standard Duty Generators

 

 

I suppose this is a little off topic, but can the Honda generators run from natural gas? I am thinking about buying one for home use (that's the off-topic part), but am concerned about stale gasoline. Can they be adapted for natural gas use? (How about LP gas? - that would get it back on topic.)

Pat

--- In electricboats@yahoogroups.com, "Myles Twete" <matwete@...> wrote:
>
> Great comments and questions Kevin…I haven’t looked at the AC output myself, but would like to understand it better.
>
> You touched on it, but it helps to point out that what really distinguishes the Honda and other similar quiet inverter gensets is their decoupling motor speed with output waveform. By generating a high voltage and efficiently converting to and maintaining a HVDC bus, then following up with an inverter output stage, these generators don’t have to run the motor at constant speed to maintain 60hz output. AS you correctly pointed out, many AC loads are quite tolerant of some waveform distortion and so that’s not the selling factor for these inverter generators as much as the quietness and efficiency. However, they go together---seeking quietness, there was a desire to slow down the motor under low load---and to do that, they justified splitting the electrical generation portion from the AC conversion portion---and at that point, devoid of any need for AC output to track a motor’s speed, the creation of a very clean AC waveform is easy with electronics and adds another selling point. I would guess that these inverters use a 10-bit reference for the AC waveform (0.5v max stepsize), but probably even a 256-bit reference would offer “clean” power (4v max stepsize).
>
>
>
> -mt
>

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