MANATEE v1.08.02


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The version v1.08.02 of MANATEE software dedicated to the electromagnetic and NVH design of electric motors has been released the 21th August 2019.

Key features

Geometry and topology

9-phase winding is now made possible besides dual three phase winding
Possibility to implement smooth pole (non salient) synchronous machines with uneven rotor slot spacing or uneven rotor slot depth
Multi-slot to have uneven slot characteristics
Step skew angle of each slice can be user-defined
New closing arc for slot 60 winding
New Slot 26 schematics and Slot type 41, 43

Electrical

Implementation of PWM voltage waveforms DPWM0, DPWM1, DPWM2, DPWM3, DPWMmin, DPWMmax, GDPWM, SVPWM
Possibility to enforce a current unbalance in the simulation
Possibility to specify Lm(Im) for induction machine as a vector and to enforce only magnetization inductance using Input.Simu.is_forceSPEC=2

Electromagnetics

Possibility to parallelize FEMM computation on the slices or time steps.
Virtual work principle computation is now possible with parallel FEMM computation
Variable speed import of airgap flux density is now possible by providing parent folders (radial and/or tangential)
Compute the effect of static and dynamic eccentricities and saturation in SDM
Torque produced by lumped magnetic forces (including tooth bending moment) now checked in comparison with Maxwell Tensor torque
Analytic permeance calculation now accounts for notching
Speed up non-linear resolution in FEMM by introducing the new FEMM feature from 21 April 2019 release
Possibility to get radial flux density space harmonics using get_Br_r.m
Possibility to rescale the whole flux distribution by a scaling factor for quick studies

Structural mechanics

Possibility to load rotor with Magnetic Lumped Forces and define specific load cases on rotor and stator
Possibility to apply Maxwell stress wave FRF with several nodes per tooth tip
Possibility to apply skewed FRF wave: the phase of the unit force can be different at each layer of the FEA model in Optistruct. Project to generate data: SM_HM_007. Project to compare with classic FRF: SM_012.
Possibility to get specific Maxwell stress harmonics at variable speed using get_VS_MTr_fr.m
Possibility to sample numerical FRF after loading external FRF
Saturation lines have been added to analytic force harmonic identification of SCIM
Possibility to generate magnetic loading on teeth for ACTRAN and PATRAN
Improvement of modulation effect model
Comparison between mechanical response based on magnetic mesh and classical FRF
Modal force computation scripts
Generation of .unv mesh file based on FEMM electromagnetic mesh
Script to read .unv mesh from Optistruct
Optimizing VWP computation using vectorized function (at least 100x faster)
Possibility to load FRF data per tooth (e.g. coming from impact hammer measurements) and convert into FRF wave

Acoustics

Noise synthesis now works more efficiently including non linear run-up on PM machines
Order analysis now includes excitation due to armature field following analytic calculations

Post-Processing

Automated plot of main Maxwell stress waves using plot_MT_main_waves.m, including skewing effect and dynamic eccentricity effects
New spectrogram (type_spectro=4) with constant width harmonics, now made by default for synchronous machines
Possibility to plot scalar FRF (RMS value of all nodes) in plot_FRF
New functions for plotting rotor forces
plot_MTr_vectors.m with radial/tangential and stator/rotor contribution
Animated plots for stator and rotor tooth forces including Fx/Fy resultants
New plot function plot_Ur_fft2_stem.m
Possibility to plot acceleration modal contribution in linear scale plot_Ar_modal_cont
plot_VS_ASWL_order_analysis.m extended to display Hxx, r=xx rather than analytical expressions
Combine the display of rotor and stator forces if available.
Improvement of plot_Ftooth_time_and_fft.m
plot_B_animate_SDM3D.m now enables to plot the flux density for each slice
plot_Fteeth_3D_fft.m is now animated
Improvement of variable speed outputs with torque ripple & average torque
New plot plot_B_animate_SDM3D.m to plot the flux density for each slice
New plot_UMP.m to plot the unbalanced magnetic pull over time
Improvement of plot_skew
Plot to display nodal forces from VWP calculation with the magnetic mesh and relative permeability
Quiver VWP nodal force with legend colorbar
plot_FRF_fr_animated.m to plot and animate a FRF computed from Optistruct

New validation cases

New validation case for modulation effect by comparison between analytical and FEA FRF
New validation case for eccentricity with sliding band
Add SM_012 (FRF skewed)
Validation cases of uneven slot WRSM added
New validation case to check that the sliding band is not modifying the mesh
Validation of smooth pole synchronous machine using FEA and PMMF EM_WRSM_US_001.m EM_WRSM_US_002.m EM_WRSM_US_003.m

Miscellaneous

Automated skew optimization of segment arrangement including noise & torque ripple with run_skew_optimization
compare_simulations.m scripts to launch several projects and compare all output variable speed values
New function compare_opt_machine.m to compare topologies coming from multi simulations (parameter sweep or optimization)
Renaming type_varspeed to define variable speed mode (0: fixed speed, 1: Load Extrapolation Algorithm, 2: speed by speed (quasi static), 3: full transient
The user can modify some variables directly from run_MANATEE, for example : run_MANATEE(’init_proj’,0,0,’Input.Simu.type_skew’,1) to ease MANATEE call inside third-party optimization loops
New default ranking mode for find_harmonic_PMSM.m => type_ranking = 3 to show as much as possible different types of Maxwell stress waves
Update of tutorial projects IPMSM
Remanent flux & B(H) curve data now saved in FLUT
Dedicated scripts to convert standard MANATEE input variable names in more "readable understandable" variables in parameter sweep / optimization plots
New definition of type_filter_harm to allow more harmonic filter options
New script to include windowing more general, including gaussian window