Timeline for What would happen if you connect a solar panel to a buck-boost converter?
Current License: CC BY-SA 3.0
12 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jan 6, 2022 at 18:42 | answer | added | renewsolar | timeline score: 0 | |
| Jul 10, 2020 at 15:00 | history | tweeted | twitter.com/StackElectronix/status/1281604101986496513 | ||
| Jul 9, 2020 at 7:09 | answer | added | user257206 | timeline score: 3 | |
| Dec 8, 2015 at 11:40 | comment | added | Russell McMahon♦ | Cheap and simple is easy with the above method. Monitor Vin and adjust BB to maintain Vin at optimum point. You can adjust this to find best value for your panel. If you can measure Iin or Iout easily you can increase Itarget slightly as Iin or out oincreases to get closer to true MPPT point. Some manufacturers (eg LT) make ICs that work like this for solar use. | |
| Dec 8, 2015 at 11:37 | comment | added | Russell McMahon♦ | ... semi optimum value and control the BB so Vin is maintained at this voltage. Typically Voptimum ~= 80% x Voc so here = 7.2 x 80% = 5.76V = 5.8V. So BB is set to monitor Vin so that it remains at about 5.8V . This is close enough to optimum load for the panel in such cases. | |
| Dec 8, 2015 at 11:35 | comment | added | Pat | @RussellMcMahon My goal is effectively to put a battery as the load (R on the diagram). I know a MPPT would be the best solution but I'm wondering what would happen if I made it cheap and simple. | |
| Dec 8, 2015 at 10:47 | comment | added | Russell McMahon♦ | It's a good question but incomplete. A BB converter is usually controlled and NOT operated open-loop. Usually you set Vout and Vin looks after itself. In this case the nature of the load is crucial. If the 5v is a battery or includes a large capacitor this will affect the ability of the BB to alter Vout substantially in one cycle so will affect how it behaves. In this scenario if the output is a battery a common solution is to maximise energy transfer and the BB is run in MPPT (maximum power point tracking) mode. A simple pseudo MPPT method that works quite well is to choose Vpanel at some ... | |
| Dec 8, 2015 at 9:17 | comment | added | Pat | yes, the solar panel is connected directly to the converter | |
| Dec 8, 2015 at 7:45 | answer | added | jwsc | timeline score: 2 | |
| Dec 8, 2015 at 7:28 | comment | added | jwsc | I think I am not fully understanding this. Do you connect the solar panel to the input of the buck/boost? | |
| Dec 8, 2015 at 7:09 | history | edited | Pat | CC BY-SA 3.0 |
Change to a buck boost converter
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| Dec 8, 2015 at 6:53 | history | asked | Pat | CC BY-SA 3.0 |