Solar Freaks

dear all

while simulating the model (available at http://ecee.colorado.edu/~ecen2060/matlab.html named pv_ array.mdl) it gives error "Trouble solving algebraic loop containing 'pv_array/PV1/Algebraic Constraint/Initial Guess' at time 0.3100000000000003. Stopping simulation. There may be a singularity in the solution. If the model is correct, try reducing the step size (either by reducing the fixed step size or by tightening the error tolerances).".

My modified panel values are Isc = 1.85A, Voc = 21.6, V at Pmax = 17.2V, I at Pmax = 1.75A.

can anyone help me in trouble shooting?

Thanks