Why am I getting an error using PV array block with P+O MPPT and boost converter in simulink? (algebraic loop error)

7 次查看（过去 30 天）
AmyH29
AmyH29 2018-3-15
评论： Guo Ludeng Guo 2020-9-4
I'm trying to create a simulink model using the built in PV array connected to a P+O MPPT method which feeds the duty cycle into a boost converter. When running this error comes up:
Simulink cannot solve the algebraic loop containing 'PV_final_1/PV Array1/Diode Rsh/Product5' at time 0.00014 using the LineSearch-based algorithm due to one of the following reasons: the model is ill-defined i.e., the system equations do not have a solution; or the nonlinear equation solver failed to converge due to numerical issues.
Error doesn't always come up, only with certain setting in the PV array.
I have included photos of the whole model, and the MPPT method.

请先登录，再回答此问题。

回答（2 个）

Seyma Biskin
Seyma Biskin 2018-4-28
Hello, Have you solved this problem. I am using Incremental Conductance MPPT method and using PWM signal output to feed the dc-dc boost converter and getting this error:
An error occurred while running the simulation and the simulation was terminated Caused by: Simulink cannot solve the algebraic loop containing 'micro_grid_last/PV Array/Diode Rsh/Product5' at time 0.028926999999999998 using the TrustRegion-based algorithm due to one of the following reasons: the model is ill-defined i.e., the system equations do not have a solution; or the nonlinear equation solver failed to converge due to numerical issues. To rule out solver convergence as the cause of this error, either a) switch to LineSearch-based algorithm using set_param('micro_grid_last','AlgebraicLoopSolver','LineSearch') b) reducing the VariableStepDiscrete solver RelTol parameter so that the solver takes smaller time steps. If the error persists in spite of the above changes, then the model is likely ill-defined and requires modification.
Almost same with yours. I will be grateful if you can share any info that can help to solve this frustrating problem. Thank you in advance.
sdas sda
sdas sda 2018-10-19
Hello,sir. Have you solved this problem.I met the same problem in Pv simulink. I will be grateful if you can share any info that can help to solve this. Thank you in advance. I hope you solve this problem.sir

社区

更多回答在  Power Electronics Control

类别

在 Help Center 和 File Exchange 中查找有关 Simulink 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by