MPPT with water turbines?

1 Posts

Mar 15, 2006 04:06 am

MPPT with water turbines?

SolarBoost's user manual says that it cannot be used with any sources that requires a shunt load.
So is there any MPPT charge controller that works with water turbines? or is there any other way to solve this problem?

Thanks

351 Posts

Mar 15, 2006 12:06 pm

Re: MPPT with water turbines?

MPPT works best on solar systems. When the battery charge is low (caused by several days of overcast) and you get a bright sunny day, it takes excess voltage and converts it to current.
Bulk charging of a battery can be done with 13 volts or so and the panel may be putting 19 volts. This gives you about 6 volts to convert.)

In a hydro system, your batteries should not be dropping that low, because your generator output is based on water flow, and that should be constant. (Solar varies with the sun) The generator should be voltage regulated, so there should be no excess voltage to convert.

If you put a MPPT controler in a hydro system, usually there would be zero net gain, and in many cases the generator and the MPPT controller would end up fighting each other, so there is a good chance that you would reduce the generator's output.

So, install per Mfg. instructions and forget the MPPT.

Oso

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