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Electric EZGO Electric EZ GO Marathon, Medalist, TXT and RXV. |
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06-12-2019, 06:20 AM | #11 |
Not Yet Wild
Join Date: Sep 2014
Location: Western NC mountains
Posts: 72
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Re: Solar Panel Charging
Bob,
Did you use a charge controller for your solar roof? If so, what type. Thanks, Jack |
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06-12-2019, 02:54 PM | #12 | |
Getting Wild
Join Date: Jan 2019
Location: South Florida
Posts: 123
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Re: Solar Panel Charging
Quote:
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06-13-2019, 05:06 AM | #13 |
Gone Insane
Join Date: Oct 2015
Location: TN/NC/GA Tri-state area
Posts: 3,952
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Re: Solar Panel Charging
The charge controller was a simple PWM type, but it was not really of much use for charging. If you can match the arrays MPP voltage to the battery packs nominal voltage, the OCV (Open Circuit Voltage) tapers charge current off all on its own. The primaru use of the charge controller was its load output control. It would turn off a relay on the charge controller when battery voltage reached 50% SoC. It had a potentiometer for setting that cutoff SoC. I had bought a collision damaged solar powered road sign trailer from auction for a couple hundred $, and that charge controller came with that trailer. It would disconnect the pack. I added a toggle switch that allowed me to connect the solar array to the drive solenoid. I could cruise at about 5 to 7 MPH in full sun with the batteries disengaged. I used that to creep back home a time or two so I could let it charge back up while I did something else. Otherwise I would fish while it charged right where I was.
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