Optimization basics

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    Curtis Community Moderator

    Hello Graham Rendell

    Thank you for your contribution to the Tigo Community!

    To learn a little more about Tigo Optimization, please go to: How does Optimization work?

    If you want personalized assistance selecting the right product for your system's needs, please reach out to our Sales Engineers. They will guide you in making the best design for maximum yield.

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    Graham Rendell

    Hi, I did have a look at  that link but it just goes on about thick and thin water pipes. Never mind.

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    Curtis Community Moderator

    Hello Graham Rendell

    Thank you for your reply. 

    The water pipes is an analogy that explains what is happening during optimization. 

    The basic concept is: Any resistance (from shade, imbalance, etc) keeps the current from flowing. If one PV Module is experiencing resistance, then the whole string is experiencing that resistance as well. Tigo Technology uses MPPT predictive technology, along with Voltage Bucking to reduce voltage slightly, and provide a larger amount of current to pass. This ensures that the flow from the entire string is unaffected by the shading of one panel. 

    Albeit a slightly different technology, this Wikipedia article explains the concept of Voltage Bucking.

    As for the question about third-party hybrid inverters: The Tigo TS4 Flex family of products will work with nearly any inverter. Since the MPPT is provided by the inverter, the Tigo MLPEs need to only moderate the current at the panel level. Good thing that they come prepared with MPPT predictive technology that allows them to anticipate the MPPT's settings and changes. 

    Once again, I do encourage you to reach out to our Sales Engineers. They will provide any materials you require for a better understanding of how this will affect the system you are building. 

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    Graham Rendell

    Thanks for the info. I think that with only five or six panels I need to be carefull the string voltage does not fall out of the range needed for the inverter to function. I guess the answer is to always try position the panels for minimum shading.

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    Curtis Community Moderator

    Yes, you are correct.

    The voltage can be an issue if the system is under-designed (near voltage minimum). However, keep in mind that the PV Modules are at max Voc, as soon as the sun comes up... it's just the current that becomes an issue, especially during times of peak irradiation. 

    Tigo's Sales Engineers can assist you with the design of your system and let you know what pitfalls to avoid. You should contact them and send them your most current design, for review. 

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