Anyone done a DC pool pumping system?

solar_dave
solar_dave Solar Expert Posts: 2,397 ✭✭✭✭
in General Solar Power Topics #1
I am interested in removing my grid tie pool pumping system and adding a DC direct drive like the Lorentz system with a boost controlled and DC pump.

As a side question has anyone done a well pump direct off solar bypassing batteries...  I would think a large storage tank could benefit from daylight pumping direct from solar.
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  • BB.
    BB. Super Moderators, Administrators Posts: 33,439 admin
    edited March 2017 #2
    Looks like the PS2 controller (system) should interface directly from solar array to their DC pumps nicely.

    https://partnernet.lorentz.de/pdf/lorentz_ps2_product-brochure_en.pdf

    The other way... Look for VFD controllers that take Solar PV input directly. And a pump+3 phase motor... Might be a bit cheaper (more research on your side).

    -Bill

    Near San Francisco California: 3.5kWatt Grid Tied Solar power system+small backup genset
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  • solar_dave
    solar_dave Solar Expert Posts: 2,397 ✭✭✭✭
    #3
    Yeah I have been looking for such a beast in the 2-3 HP range AC.  I think the problem is the buck boost required to start the motor at low input and the variability for the solar input.
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