Disable MPPT when using module level power electronics?

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Disable MPPT when using module level power electronics?

Postby Mike Curran on Tue Jul 08, 2014 9:34 am

I have some shading issues on my array and am considering installing DC optimizers on the modules. The current (Aug-Sep 2014) issue of Home Power has an article on MLPE's. The article says "The optimizers’ MPPT may not co-exist with a string inverter’s MPPT, in which case the string inverter MPPT should be disabled." Can the MPPT function on my MX60 be disabled, and if so, how? I see in the manual there's a "U_Pick%" mode, but this doesn't seem to shut off MPPT completely, if I understand it correctly. If I'm unable to shut off the MX60's MPPT function, does this mean power optimizers are not a good fit for my system? Thanks in advance!
Mike Curran
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My RE system: Outback:
- 8 (2x4) Evergreen 180's into one MX60
- 6 (2×3) ALEO S79-300's into one FM80
- 2 grid-tied GVFX3524's classic stacked for 120/240VAC
- 12 Surrette/Rolls 2V x 1766Ah
- Hub10.3, Mate3, FNDC, RTS, OpticsRE. Tigo Energy ES maximizers on each PV module.

Westinghouse Solar:
- 30 (2x15) 235W panels with Enphase M215 microinverters, grid-tied.

Re: Disable MPPT when using module level power electronics?

Postby klundquist on Tue Jul 08, 2014 12:52 pm

I do not have direct experience however I've spoken to people who have used both Tigo and Solaredge optimizers with the MX60. As far as I know everything worked great. I do not think they disabled the MPPT ability of the MX60. You can turn off the Auto Sweep if necessary. Follow the Micro Hydro instructions on page 54 of the MX60 manual http://legacy.outbackpower.com/pdf/manu ... v_mppt.pdf . When in doubt I suggest you contact the manufacturer of the DC optimizer product.
Kurt Lundquist
Alpha Energy Systems Engineer
http://www.alpha.com/solar
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Re: Disable MPPT when using module level power electronics?

Postby Mike Curran on Wed Jul 09, 2014 9:00 am

Thanks!!!
Mike Curran
OutBack Guru
 
Posts: 370
Joined: Sat Aug 28, 2004 6:28 pm
Location: Chagrin Falls, Ohio
My RE system: Outback:
- 8 (2x4) Evergreen 180's into one MX60
- 6 (2×3) ALEO S79-300's into one FM80
- 2 grid-tied GVFX3524's classic stacked for 120/240VAC
- 12 Surrette/Rolls 2V x 1766Ah
- Hub10.3, Mate3, FNDC, RTS, OpticsRE. Tigo Energy ES maximizers on each PV module.

Westinghouse Solar:
- 30 (2x15) 235W panels with Enphase M215 microinverters, grid-tied.

Re: Disable MPPT when using module level power electronics?

Postby cyrax on Sun May 07, 2017 4:56 pm

klundquist wrote:I do not have direct experience however I've spoken to people who have used both Tigo and Solaredge optimizers with the MX60. As far as I know everything worked great. I do not think they disabled the MPPT ability of the MX60. You can turn off the Auto Sweep if necessary. Follow the Micro Hydro instructions on page 54 of the MX60 manual http://legacy.outbackpower.com/pdf/manu ... v_mppt.pdf . When in doubt I suggest you contact the manufacturer of the DC optimizer product.



Hi klundquist,

I am about to install the tigo optimizers to my system. I have shade issues and my output is low. please what do you suggest?
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Re: Disable MPPT when using module level power electronics?

Postby Mike Curran on Sun May 07, 2017 5:11 pm

Cyrax, do it! You will see an improvement in output.
Mike Curran
OutBack Guru
 
Posts: 370
Joined: Sat Aug 28, 2004 6:28 pm
Location: Chagrin Falls, Ohio
My RE system: Outback:
- 8 (2x4) Evergreen 180's into one MX60
- 6 (2×3) ALEO S79-300's into one FM80
- 2 grid-tied GVFX3524's classic stacked for 120/240VAC
- 12 Surrette/Rolls 2V x 1766Ah
- Hub10.3, Mate3, FNDC, RTS, OpticsRE. Tigo Energy ES maximizers on each PV module.

Westinghouse Solar:
- 30 (2x15) 235W panels with Enphase M215 microinverters, grid-tied.


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