Start with a machine, not a complete model
An externally excited synchronous motor taken from a production BMW vehicle, with insufficient electromagnetic information for control development.
Characterize the effect of rotor excitation
Dynamometer experiments maintained rotor winding current at selected levels while identifying nonlinear d-axis and q-axis inductance characteristics. Recording Ld and Lq as two-dimensional maps associated with each rotor-current level.
Build the plant and controller models
The identified characteristics were used to build EESM plant and controller models in MATLAB/Simulink. Separating rotor-excitation conditions is important to retaining the behavior described by the characterization.
Efficiency map
Obtaining an efficiency map on the dynamometer and building an offline simulation model.
Inside the work.
The characterization, efficiency map and model completion are self-reported in the supplied company document. No independent results dataset or project video was supplied for this case.
Supporting material
Technical details are documented in the supplied project record. No public demonstration link was supplied for this project.
Connected expertise.
SPM and IPM rotor structures · supplied document
Motor models built for control development.
Develop linear and nonlinear electric machine models from finite-element data or an initial machine description.
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Powertrain dynamometer test bench · supplied document
Prototype testing with a clear measurement plan.
Support motor test setup, instrumentation and experiments from small drone propulsion motors to larger traction machines.
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