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Relative Low Performance of Domestic PV System
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<blockquote data-quote="Bob Smith" data-source="post: 537338" data-attributes="member: 35176"><p>Once you have done a bit more research you may be able to confirm that the issue is this. The minimum requirements for your inverter to start converting DC into AC.</p><p></p><p>Once it is confirmed the question is what can you do about it?</p><p></p><p>Here are my thoughts only:</p><p>1) How often does this is occurring? It could be that in the worst-case scenario you are only a few % below the limit and therefore most of the year you'll be fine. ie compare to a more optimal system you'll lose only a few % of generation.</p><p>Therefore, I would suggest there is nothing to do as what could be done to make improvements would not be cost-effective.</p><p></p><p>2) If indeed you do lose in generation and that level of loss is not acceptable for you. Do not think that optimizer like Tigo will help because you do not have a shading issue on some panel so with or without optimizer your inverter will still get not enough voltage to kick off</p><p>I can only think of micro-inverter. This makes each panel fully independent of each other. This will require a significant design change of your installation and will surely not be cost effective.</p></blockquote><p></p>
[QUOTE="Bob Smith, post: 537338, member: 35176"] Once you have done a bit more research you may be able to confirm that the issue is this. The minimum requirements for your inverter to start converting DC into AC. Once it is confirmed the question is what can you do about it? Here are my thoughts only: 1) How often does this is occurring? It could be that in the worst-case scenario you are only a few % below the limit and therefore most of the year you'll be fine. ie compare to a more optimal system you'll lose only a few % of generation. Therefore, I would suggest there is nothing to do as what could be done to make improvements would not be cost-effective. 2) If indeed you do lose in generation and that level of loss is not acceptable for you. Do not think that optimizer like Tigo will help because you do not have a shading issue on some panel so with or without optimizer your inverter will still get not enough voltage to kick off I can only think of micro-inverter. This makes each panel fully independent of each other. This will require a significant design change of your installation and will surely not be cost effective. [/QUOTE]
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Relative Low Performance of Domestic PV System
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