Modeling discrepancy for induction machine depending on the solver type (FPGA vs. CPU)

Test environment

  • PLECS 5.0.4 and 4.9.9 are tested. (standalone)
  • RTBOX3 with firmware 4.0.7 and 3.1.8 are tested.

Dear Plexim

My name is Jaeyeon Park, and I am a Ph.D. student at Seoul National University, South Korea.

I have been using PLECS extensively for my research and have found it very useful.
Currently, I am using an RT Box 3 as a real-time simulator, and I have a question regarding the modeling and real-time simulation of induction machines.

In particular, when simulating a high-power induction machine on the RT Box 3,
I have observed significantly different response characteristics depending on whether the model is implemented on the FPGA or CPU.
I am having some difficulty understanding the reason for this difference and would greatly appreciate your technical guidance.

Due to the limitations of file type that I can upload, I attached my drive link where my inquiry document and Plecs simulation project locates.
I have described the issue, simulation setup, and my specific questions in detail in the attached document. I would appreciate it if you could review it and provide any insights or recommendations.

Thank you very much for your time and support.