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Odd behaviour from Growatt inverter
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<blockquote data-quote="Bobsta" data-source="post: 540072" data-attributes="member: 36108"><p>I'm struggling to get my head around why it's necessary. I implemented an Emporia energy monitor recently which provides per-second monitoring of all circuits in the house. Using it I can see what goes one when the sun goes down and the Growatt inverter decides to stop delivering power from the battery - in fact it's not a binary switch-off at all... but quite a set of electrical acrobatics:</p><p></p><p></p><p>Here it is supplying power to meet the house's load up until just after 4.48pm when it drops down (and therefore we start pulling from the grid):[ATTACH=full]14867[/ATTACH]</p><p>... it carries on like this for a few minutes and then its output starts ramping up and down:</p><p>[ATTACH=full]14868[/ATTACH]</p><p>... this then turns into a more regular cycle:</p><p>[ATTACH=full]14869[/ATTACH]</p><p>.. until it then predominantly goes back to supply the full load but with consistent dips in output that need to be filled by the grid:</p><p>[ATTACH=full]14870[/ATTACH]</p><p></p><p>As I say, I find this a bit annoying but if it's as-designed and a built-in feature then I'm OK living with it. I'd just like to ensure it's not a fault and abnormal. If it were "normal" I'd expect more people to notice it and talk about it.</p><p></p><p><span style="color: rgb(147, 101, 184)">Split from hi-jacked post.</span></p></blockquote><p></p>
[QUOTE="Bobsta, post: 540072, member: 36108"] I'm struggling to get my head around why it's necessary. I implemented an Emporia energy monitor recently which provides per-second monitoring of all circuits in the house. Using it I can see what goes one when the sun goes down and the Growatt inverter decides to stop delivering power from the battery - in fact it's not a binary switch-off at all... but quite a set of electrical acrobatics: Here it is supplying power to meet the house's load up until just after 4.48pm when it drops down (and therefore we start pulling from the grid):[ATTACH type="full" alt="1675099983071.png"]14867[/ATTACH] ... it carries on like this for a few minutes and then its output starts ramping up and down: [ATTACH type="full" alt="1675100259931.png"]14868[/ATTACH] ... this then turns into a more regular cycle: [ATTACH type="full" alt="1675100356909.png"]14869[/ATTACH] .. until it then predominantly goes back to supply the full load but with consistent dips in output that need to be filled by the grid: [ATTACH type="full" alt="1675100421361.png"]14870[/ATTACH] As I say, I find this a bit annoying but if it's as-designed and a built-in feature then I'm OK living with it. I'd just like to ensure it's not a fault and abnormal. If it were "normal" I'd expect more people to notice it and talk about it. [COLOR=rgb(147, 101, 184)]Split from hi-jacked post.[/COLOR] [/QUOTE]
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Odd behaviour from Growatt inverter
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