Adding more panels

Thom
Thom Solar Expert Posts: 196 ✭✭✭
in Off Grid Solar & Battery Systems #1
thinking of adding panels using a Brat charge controler. Would like another 200w . Would this work ok with my existing system? Could I EQ with both controllers?. Is this a dump plan ? My system is listed below

thanks Thom
Off grid since 1984. 430w of panel, 300w suresine , 4 gc batteries 12v system, Rogue mpt3024 charge controller , air breeze windmill, Mikita 2400w generator . Added 2@ 100w panel with a midnight brat 
· Share on Twitter

Comments

  • BB.
    BB. Super Moderators, Administrators Posts: 33,613 admin
    #2
    What is the Vmp of the 200 Watts of solar you want to add? Is this a 200 watt panel with Vmp~30 volts or a pair of ~100 Watt panels with Vmp~100 Volts? For a 12 volt system and PWM Brat, you would need Vmp~18 volt panels.

    For equalization, you probably only need to put the Rogue in Equalization mode... You only need around 5% rate of charge to equalize and your 430 Watt array should be enough.

    -Bill
    Near San Francisco California: 3.5kWatt Grid Tied Solar power system+small backup genset
    · Share on Twitter
  • Thom
    Thom Solar Expert Posts: 196 ✭✭✭
    #3
    Yes I'm thinking 100w 18v panels . Could I use both to Eq ? 
    Off grid since 1984. 430w of panel, 300w suresine , 4 gc batteries 12v system, Rogue mpt3024 charge controller , air breeze windmill, Mikita 2400w generator . Added 2@ 100w panel with a midnight brat 
    · Share on Twitter

Categories