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Solar pv batteries distance to CU
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<blockquote data-quote="revor" data-source="post: 519095" data-attributes="member: 23254"><p>Don't think it has anything to do with limitation as it is up to 6Kwp although never is that, was putting up to 4.7 yesterday. It can generate up to over 6 on occasion but on a prolonged sunny day as the inverter does more work and gets closer to 60 deg c throttles back and will settle around 5.5 generated and will do that happily all day. The impression I am getting is that this issue has cropped up recently otherwise think would have noticed it sooner but could have been there from start. Most of the summer have hardly used the battery fully just the top end. As we have had duller days often only generating 0.3 to 0.8 Kw solar the battery has got used more to the point of empty. All summer not had that situation, at end of day, often much sooner was 100% full. Now it is starting from a much lower point close to 1% on some days the last week or so and does not get to 100% . At about 80% it can be 60+ volts then it start discharging and charging working its way up but in recent days not got to 100%. Shorter cloudier days. Yesterday got up to 94 and 60.2 ended up at 19.45hrs 92% and 59V. This morning ended up at 52% 54.2V. Promises to be very sunny today so will see what happens. I am struggling to see the relationship between SOC and V but in the last couple of week have seen the highest and lowest V since been up and running. 61v at 86% and 51.8V at 24% I am wondering if a contribution is that the battery has not been used enough and now it is catch up time. </p></blockquote><p></p>
[QUOTE="revor, post: 519095, member: 23254"] Don't think it has anything to do with limitation as it is up to 6Kwp although never is that, was putting up to 4.7 yesterday. It can generate up to over 6 on occasion but on a prolonged sunny day as the inverter does more work and gets closer to 60 deg c throttles back and will settle around 5.5 generated and will do that happily all day. The impression I am getting is that this issue has cropped up recently otherwise think would have noticed it sooner but could have been there from start. Most of the summer have hardly used the battery fully just the top end. As we have had duller days often only generating 0.3 to 0.8 Kw solar the battery has got used more to the point of empty. All summer not had that situation, at end of day, often much sooner was 100% full. Now it is starting from a much lower point close to 1% on some days the last week or so and does not get to 100% . At about 80% it can be 60+ volts then it start discharging and charging working its way up but in recent days not got to 100%. Shorter cloudier days. Yesterday got up to 94 and 60.2 ended up at 19.45hrs 92% and 59V. This morning ended up at 52% 54.2V. Promises to be very sunny today so will see what happens. I am struggling to see the relationship between SOC and V but in the last couple of week have seen the highest and lowest V since been up and running. 61v at 86% and 51.8V at 24% I am wondering if a contribution is that the battery has not been used enough and now it is catch up time. [/QUOTE]
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