Why i am facing this problem while running my solar array model?Please help me out. Thankyou

Nonlinear solver:failed to converge,residual norm too large..

Answer 1

[Walter Roberson]

Over some portion of the range of variables that you permitted, your equations are steep enough that double precision numbers are not sufficient to be able to find a reasonably smooth linear approximation between adjacent representable numbers. For example, x^10 is unreasonably large by the point of x = 40

• there might be a problem in the equations
• you might have to restrict the range of variables
• you might need to adjust the options to permit a larger tolerance
• you might have to switch to the symbolic toolbox.