Error: "Each physical network must be connected to exactly one Solver Configuration block. There is no Solver Configuration block connected to Physical Network with the follow

Dear Support Team,

I am currently developing a hybrid green hydrogen production process simulation in MATLAB R2025a and have encountered a persistent technical issue that requires your expertise.

Error Description:The system consistently generates the following error message: "Each physical network must be connected to exactly one Solver Configuration block. There is no Solver Configuration block connected to Physical Network."

Project Details:I am working with a hybrid renewable energy system incorporating both solar and wind power sources. The simulation consists of a main system with dedicated subsystems for solar and wind components.

Documentation Provided:I have attached three screenshots that illustrate:

1. The main system architecture
2. The solar subsystem configuration
3. The wind subsystem configuration

Objective:I would like to successfully execute the simulation and analyze the performance characteristics of the hybrid system with both wind and solar panels operating simultaneously.

Request:Could you please provide guidance on resolving this Solver Configuration block error to enable proper system operation?

Thank you for your assistance. I look forward to your response.

Answer 1

[Sabin]

Each physical network must have only one solver configuration block. Best practice is to put it at top level. From the diagrams you have a Solver configuration in the Solar Array subsystem and another one in the DC Generator subsystem, but these two systems are connected via domain or PS lines. Removing one solver configurations from the two subsystems will remove the root cause of the error.

If by design, you want to have different solver configurations you have to break the physical network and have only pure Simulink signals between the independent networks (Network Couplers can help).