Awesome. Thank you! BTW. If anybody has issues with measuring Voc, make sure the DC sweep upper limit does include I(V1) actually reaching zero. So, Better use 0.65V, not 0.6V, in this example.
If I have 2 Voltage sources like V1 and I want to show both voltages on x-axiss, how do I have to manage this? LTSpice always puts the second V-source on y-axis.
This just has to do with the way you connect the resistor and how the current is defined (which terminal the current is going in and which one out). If you want to chage the sign, you can rotate the resistor 180 degrees.
In order to extract power from the solar cell, the diode needs to be forward biased. In this case, the cathode is connected to ground as there are no other nodes in this simple circuit that can be placed at a lower potential than the anode. Also, a ground node always needs to be defined in a circuit simulator for it to find a solution. In general though, you just need to make sure that the cathode is at a lower potential with respect to the anode to extract power from the solar cell.
Ivan explained it at time 1:58; So he's saying, if there is a current flowing through the resistor from right to left, we would have forward bias at the diode in all cases.
thank you for your explanation. i want to draw an electric circuit for a pv module consist of 72 cells.(6*12). by 3 bypass diodes. would you have any idea for this circuit? i would wondering if you could help me. thnks alot
If you want to model shading on a single solar cell, you need to "split" the cell into sections each with a short circuit current proportional to the area of the sub-cell. All the subsections are then connected in parallel. So, lets say you want to split the cell into 4 equal sections, each sub-cell would have a current source that is 1/4 of the total short circuit current if it was not shaded. Shading is then modelled by changing the amount of current on each section to represent the intensity of light arriving to the cells (the current is proportional to the light intensity). You would see that the total current is simply the sum of the current of each section of cell. To model shading in a string of a solar panel, solar cells are connected in series and each cell has a current source in parallel representing the short circuit current. If the solar panel is shaded, then each solar cell will have a short circuit current proportional to the light intensity. In this case, and assuming the shunt resistance is negligible, the lowest current in the string would determine the current for the whole string.
Great tutorial on modelling a SC And using LT Spice.
Awesome. Thank you!
BTW. If anybody has issues with measuring Voc, make sure the DC sweep upper limit does include I(V1) actually reaching zero. So, Better use 0.65V, not 0.6V, in this example.
Very useful, just what I was looking for
Thank you for this. Just what I'm interested in to model two different panels in parallel & series and see the combined response.
Excellent!! Thanks!
If I have 2 Voltage sources like V1 and I want to show both voltages on x-axiss, how do I have to manage this? LTSpice always puts the second V-source on y-axis.
AMAZING!!!!
how if the the circuit ha e two pv and install by paralelling other
why there is mins sign on I(R1) =-3A
This just has to do with the way you connect the resistor and how the current is defined (which terminal the current is going in and which one out). If you want to chage the sign, you can rotate the resistor 180 degrees.
thanks for your scientific and usefull video. please explain the reason that you added ground in cathode diode?
In order to extract power from the solar cell, the diode needs to be forward biased. In this case, the cathode is connected to ground as there are no other nodes in this simple circuit that can be placed at a lower potential than the anode. Also, a ground node always needs to be defined in a circuit simulator for it to find a solution. In general though, you just need to make sure that the cathode is at a lower potential with respect to the anode to extract power from the solar cell.
Ivan explained it at time 1:58; So he's saying, if there is a current flowing through the resistor from right to left, we would have forward bias at the diode in all cases.
thank you for your explanation. i want to draw an electric circuit for a pv module consist of 72 cells.(6*12). by 3 bypass diodes. would you have any idea for this circuit? i would wondering if you could help me. thnks alot
can u plz help out me I want to draw graph current vs voltage but unfortunately my simulation always shows me time vs current wht can I do
@@TechnologywithNidaR Seem like you are doing a transient analysis rather and DC sweep.
How can you model shading?
If you want to model shading on a single solar cell, you need to "split" the cell into sections each with a short circuit current proportional to the area of the sub-cell. All the subsections are then connected in parallel. So, lets say you want to split the cell into 4 equal sections, each sub-cell would have a current source that is 1/4 of the total short circuit current if it was not shaded. Shading is then modelled by changing the amount of current on each section to represent the intensity of light arriving to the cells (the current is proportional to the light intensity). You would see that the total current is simply the sum of the current of each section of cell. To model shading in a string of a solar panel, solar cells are connected in series and each cell has a current source in parallel representing the short circuit current. If the solar panel is shaded, then each solar cell will have a short circuit current proportional to the light intensity. In this case, and assuming the shunt resistance is negligible, the lowest current in the string would determine the current for the whole string.