Hi,
I ran the latest FAST v8 in MATLAB/Simulink coupled with baseline generator-torque and pitch controllers based on the OC3-monopile model using ‘Test19.fst’ in the ‘CertTest’ folder as the primary input file. It ran successfully. Then I set ‘CompElast’ and ‘CompAero’ to 2 to test BeamDyn. I also changed AeroFile to ‘5MW_Baseline/NRELOffshrBsline5MW_OC3Monopile_AeroDyn15.dat’. But it fell and gave the error messages as follows:
“Error using Run_NREL_5MW_MONOPILE (line 22)
Error reported by S-function ‘FAST_SFunc’ in ‘NREL_5MW_MONOPILE/FAST Nonlinear Wind
Turbine/S-Function’:
FAST_Solution:FAST_AdvanceStates:BD_GA2:BD_DynamicSolutionGA2:Solution does not
converge after the maximum number of iterations
FAST_AdvanceStates:BD_GA2:BD_DynamicSolutionGA2:Solution does not converge after the
maximum number of iterations
FAST_AdvanceStates:BD_GA2:BD_DynamicSolutionGA2:Solution does not converge after the
maximum number of iterations”.
Then I increased ‘NRMax’ in ‘NRELOffshrBsline5MW_BeamDyn.dat’ to 10000. But there was no use for convergence and errors reported above still appeared.
I would like to know how I can deal with this problem, without increasing ‘stop_tol’ in ‘NRELOffshrBsline5MW_BeamDyn.dat’. Thank you.
Best wishes,
Xin