Don't forget to consider external radios can control your system should they be set to the same freq. Hard wired is best for important systems. To make a more secure system, you could use a circle type antenna to reduce this risk.
The system you describe is much like the eco trottle on the i series of Honda quiet generators. Honda uses a stepper motor that controls the throttle. The system monitors the capacitor voltage on the DC bus that is used to power the system's inverter.
You could use a low voltage sensor to start the engine as well, but where are you going to set it's voltage? A demand from the motor lowers the voltage, thus kicking in the generator, even when you would rather not have it kick in. This would also make setting a voltage for full charge difficult without monitoring charge and demand.
Such monitors are available but it seems the effort would be to avoid using one.
What may be needed is a two mode system that will monitor the voltage level in two operating modes using the on switch to activate the mode in use.
Kevin
http://simplyrv.
For RV information
--- On Tue, 6/2/09, William Grace <jwsys@iconz.
From: William Grace <jwsys@iconz.
Subject: [Electric Boats] Re:Charging Question
To: electricboats@
Date: Tuesday, June 2, 2009, 3:05 PM
Hi Colin
I have been pondering the same question for some time. It occurs to
me that it would not be too difficult to arrange a small servo system
set to monitor the battery voltage and to connect to a model control
servo motor. The servo motor would be connected to the throttle
linkage on an IC engine driving a PM generator. The system would be
arranged to apply more throttle if the battery voltage falls below 14
volts and to reduce power above that figure. It is simple from an
electronics point of view. Has anyone tried this or similar?
Cheers
Bill Grace
Wellington
New Zealand
[Non-text portions of this message have been removed]
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