FEA Model (Electric Motor Simulation Toolkit)
- Updated2023-02-21
- 2 minute(s) read
FEA Model (Electric Motor Simulation Toolkit)
The finite element analysis (FEA) model function implements high-fidelity model simulation of an electric motor. The FEA model takes real motor characteristics into account and uses the FEA method to describe the motor behaviors.
In mathematics, the FEA method is a numerical technique to find approximate solutions to boundary value problems. This method connects many simple element equations over many small subdomains, named finite elements, to approximate a more complex equation over a larger domain. In mechanics and computer science, the FEA method is also a method of mechanical computer simulation and a computational tool to perform engineering analysis. The FEA model uses software programs based on finite element method algorithms to divide a complex problem into smaller elements.
The FEA model function obtains real motor characteristics from the RTT files. Among the characteristics, motor parameters are analyzed using the FEA method. As part of the simulation process, the FEA model function looks up the motor parameters and characteristics in these files.
The FEA model uses the following voltage equation to calculate the current for a PMSM.
| where | Va, Vb, and Vc are the three-phase voltages |
| R is the phase resistance | |
| Ia, Ib, and Ic are the three-phase currents | |
| L'aa, L'bb, and L'cc are the differential self-inductances | |
| L'ab, L'ac, L'ba, L'bc, L'ca, and L'cb are the differential mutual inductances | |
| λa, λb, and λc are the magnetic fluxes generated by the permanent magnet |
The FEA model uses the following voltage equation to calculate the current for a three-phase SRM.
| where | Laa, Lbb, and Lcc are the self-inductances |
| Lab, Lac, Lba, Lbc, Lca, and Lcb are the mutual inductances |