Timeline for Why don’t illuminated series connected (photo-)diodes bias each other?
Current License: CC BY-SA 4.0
11 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Oct 29, 2020 at 12:46 | comment | added | AskingBecauseIHaveQuestions | But what about shunt resistances that lead to reverse currents (i.e. reverse biasing, I assume) ? Won't all other cells then have the same reverse current? | |
| Oct 27, 2020 at 8:24 | comment | added | boyfarrell | The current voltage curve of each solar cell is known. The current following in each solar cell is known. So the voltage across each solar cell is also known. The cells which “produce too much” current will be slightly forward biased, as this reduced the current that flows. | |
| Oct 26, 2020 at 21:53 | comment | added | AskingBecauseIHaveQuestions | Ah, okay, I understand what you mean! I guess that also follows from the Kirchhoff laws (although referring to continuity equation would have been more clear to me). So one shaded cell will "slow down" all others? That is really interesting!! I never thought about it this way!! My next question (in case I understood you correctly so far): You demonstrated that the voltage has been "added". So does this mean that illuminated adjacent cells forward bias each other? Is there a second way to explain this (different from pointing to general expectations about voltages in series circuits)? | |
| Oct 26, 2020 at 21:51 | comment | added | boyfarrell | I mean that charge cannot accumulate so current flowing through all solar cells must be the same. | |
| Oct 26, 2020 at 21:39 | comment | added | AskingBecauseIHaveQuestions | The Kirchhoff law is about currents entering and leaving a node, not about currents in series. Or do you mean that this can be derived from the law that voltages in a loop add up to zero? | |
| Oct 26, 2020 at 21:37 | vote | accept | AskingBecauseIHaveQuestions | ||
| Oct 26, 2020 at 20:41 | comment | added | boyfarrell | Probably because it's a term used in solar literature. But it's just based on Kirchoff's law en.wikipedia.org/wiki/Kirchhoff%27s_circuit_laws | |
| Oct 26, 2020 at 20:30 | comment | added | AskingBecauseIHaveQuestions | Thanks for your effort in modeling the problem! I try to understand your answer step by step. One thing I wonder: Why, when I search for "current matching constraint", do I only find papers related on tandem solar cells? | |
| Oct 18, 2020 at 14:20 | history | edited | boyfarrell | CC BY-SA 4.0 |
deleted 1 character in body
|
| Oct 18, 2020 at 14:10 | history | edited | boyfarrell | CC BY-SA 4.0 |
deleted 1 character in body
|
| Oct 18, 2020 at 13:09 | history | answered | boyfarrell | CC BY-SA 4.0 |