Derivative of state '1' in block PV Array at time 0.0 is not finite error

im trying to charge a battery using a solar pv array and i keep getting the following error: An error occurred while running the simulation and the simulation was terminated

Caused by:

• Derivative of state '1' in block 'ChargingBatteryUsingSolarPVArray/PV Array/Diode Rsh/Transfer Fcn' at time 0.0 is not finite. The simulation will be stopped. There may be a singularity in the solution. If not, try reducing the step size (either by reducing the fixed step size or by tightening the error tolerances)

what am i not doing correctly?

Answer 1

[R]

Hi Nishant,

This error occurs when some operation in the model returns "Inf" or "NaN" output. To debug this error, open Configuration Parameters and navigate to Diagnostics > Data Validity. Set the diagnostic "Inf or NaN block output" to error. When you run your simulation, you will get the error as follows:

An error occurred while running the simulation and the simulation was terminated

Caused by:

Block 'BlockName' outputs 'NaN' for element x of output port x at major time step 0

Where 'BlockName' is the block in which the error is thrown.

This block either divides by 0 or outputs NaN, which creates an Inf which generates this error. Therefore, avoid division by zero in the logic and check operations for possible NaN outputs.

[Nishant]

Hey! thanks for the answer. Can you please pinpoint what exactly do i need to change in order to get the model to run correctly. Im trying to charge a battery through a solar pv arrray.

[R]

It's difficult to identify the specific issue based solely on the image. Could you please attach the Simulink model along with your response so that I can examine it more closely?

[Nishant]

heres the model

Answer 2

[Mirza]

I'm having the same problem as you while designing my MPPT, my solution was to add a small capacitor pararel to the + and - of the PV Panel, 0.00001 should be good. Try it and see if it works