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Generator power to battery storage, is it possible?

What can I use transfer power from my generator to a battery bank, in this way i can store the excess energy from the generator for later use?

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You can do it by a UPS like system, but do you think, that you will pay less for it.
Your generator produces power and uses fuel proportional to the output power.
The efficiency of the generator at half or low load is less, than on full, but that of the UPS and the battery is much much less than this.

Posted on Jul 20, 2010

  • parlapanov Jul 21, 2010

    If you rate this solution as useless, you don't need to ask some one, do what you have decided!

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Can't find the transfer switch, and could it go bad. Shore power and generator power works to the main panel box, but won't charge coach batteries


although it is possible to do separately most times the transfer switch is internal to the inverter , and the fact you mention that inverter is not charging batteries tells me your fault lay in the inverter all or part of it is not working , look at it carefully these have sometimes two reset breakers on there cases

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It is possibly a transfer switch issue, not the generator control board. Have an electrican kill utility power, let it start and run, then disconnect the sensing wires in the ATS. If it stops problem is ATS

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Where are the exciting field wire fuses located


Try putting 12 volts DC across the commutator coils at the brushes, sometimes the generator looses it's magnetic field and this could possibly restore it but make sure it is a low current not a car storage battery.

Good luck,

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We have a cyber power UPS unit # 425VA connected to our garage rollup doors at my building. Whenever we do the monthly generator transfer testing, the unit needs to be reset so that the doors will operate...


Steve,

Sounds like the batteries in that UPS aren't supporting the draw for the amount of time that the transfer is happening... How long is the transfer to generator? Is that UPS tied to the generator? If not, you should consider doing that, in most cases UPS's work in the interim (between power off and generator on). You might also want to consider a bigger UPS if neither of those options is possible.

Depending on how often you do these 'tests' you may also want to test the batteries in the UPS to see if they need to be replaced.

If you need UPS, Surge, or Power Related help don't hesitate to contact me!
Daniel • daniel@psihq.com • Power & Systems Innovations • 800.260.2259 • www.psihq.com

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My onan emerald 1 genset is not transfering charge to the battery


Assuming your generator has the battery charger option?
Measure the battery voltage at the battery lead in the generator, without the unit running, or the motorhome ignition on. It should read approx 12V after the unit has been sitting a while. Then start the generator, it should rise to approx 13.8 with a good battery. If it does not then the stator windings and charge rectifier in the generator should be checked. If the voltage is 13.8 approx with the generator then you problem lies further upstream, and possibly with an isolation solenoid. If you generator does not have a battery charge winding/option then charging comes from the line voltage via a motorhomes inverter, check the inverter.

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Helloi bought a new TR2424-230-50 inverter and 2 X 12V batteries connected. When charging with my 5KVA generator the generator frequency is very unstable and the amps (a/c) drawn is upto 10A. Is there a...


Frequency is a function of generator RPM. Slower the engine, lower the frequency. Faster the engine, higher then frequency.

Look at your generator first, it should be able to maintain this load without problems - check your governor.

You can try plugging in a lamp directly into the generator so that it won't see a pure inductive (input to inverter) load, but will also see the resistive load from the lamp.

Power Draw of 10Amps is going to be what it is, unless you change the AMP Hour capacity of your battery bank that is connected. Be careful though, as this will not only reduce the charging current (and amount of load present on the generator), but it may also affect how the inverter operates with heavy loads, and may cause the charging profile to go into bulk and float modes prematurely.

Are you feeding your generator into the inverter via the transfer switch, or are you plugging the coach power cord into the generator? The former would force all the AC loads to be switched by the inverter, the latter allows all ac loads to be powered, even those that you may not know about / realize (water heater loads are a big one) and eat up generator capacity.

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Same problem, generator kicked in after power outage,


At the point the transfer switchis suppose to transfer put a dc volt meter across terminals 23 and 194 in the transfer if you do not show 12VDC. Then you have a relay hanging upon the PCB board in the generator, need to replace board. If you are showing 12VDC and the switch is not transferring the problem is in the switch itself.

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Converting the power to genertor


You should not have to switch between battery and generator, unless you are trying to use an inverter as well. Batteries are 12vdc, typically run lighting, water pump, furnace, fridge controls. Generator powers ac, microwave, television, and anything else that plugs into a 120vac wall outlet. Inverter may also run select loads, and possibly dedicated wall outlets, but not AC, fridge, or microwave (usually).

Most RVs / Motorhomes now have automatic transfer switches that will switch between the generator, shorepower, and possibly an inverter. Your coach is made during an era of transition from manual transfer switch (in form of heavy duty electrical outlet near shore power cord) and the automatic transfer switch.

There is no specific place where a transfer switch or generator receptacle are mounted on an RV. There are no rules or regulations tha cover this as far as I know. Your RV may also have an EMS (Energy Management System) that will control the transfer switch as well. EMS panels are typically located above the refrigerator or above driver / passenger seats in overhead compartment.

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