Assertion error in battery pack cooling system implementation
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I'm encountering an assertion error in my Simscape model related to the state of charge exceeding the maximum value of 1. The error occurs at time 1.200000 during simulation. I have a Pack1 subsystem with a ModuleAssembly1 block, and within it, there's a Module1 block where the assertion is triggered.
I've reviewed the code and calculations in the relevant Simscape source files (ParallelAssemblyType1.ssc and ModuleType1.ssc) around the mentioned line numbers (80-92 and 73-82, respectively). However, I haven't been able to identify the specific cause of the state of charge exceeding 1.
Could someone please provide guidance on how to troubleshoot and resolve this issue? I want to ensure that the state of charge remains within the valid range of 0 to 1 throughout the simulation.
Any suggestions or insights would be greatly appreciated. Thank you!
error message : At time 1.200000, one or more assertions are triggered. State of charge must be less than or equal to 1. The assertion comes from: Block path: PB_cell_balancing/Pack1/ModuleAssembly1/Module1 Assert location: o (location information is protected) o In between line: 80, column: 26 and line: 92, column: 52 in file: C:\Users\EL Fahem\MATLAB\Projects\+packBalancingExample\+ParallelAssemblies\ParallelAssemblyType1.ssc o In between line: 73, column: 39 and line: 82, column: 61 in file: C:\Users\EL Fahem\MATLAB\Projects\+packBalancingExample\+Modules\ModuleType1.ssc
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Javier Gazzarri
2023-7-16
Hello Ali,
Can you please check if you are using the same current sign convention we do in the block? In many cases I see this error when starting the simulation at full charge and loading the pack with a charging (positive) current. If so, please use a gain to switch the sign of your current so that positive is for charge and negative is for discharge.
Please let me know how this goes.
Javier
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