MANATEE v1.05.04

The version v1.05.04 has been released the 3rd September 2016.

Features

Electrical
  • Possibility to introduce a non-zero DC current component
  • Possibility to inject harmonic currents in DQ frame
  • Extension of time & space harmonics in equivalent circuits and handling of the DC component
  • More accurate estimation of iron losses based on average tooth flux density weigthed by area
  • DFIM control with specified power factor and mechanical power for wind turbine application
  • Possibility to simulate locked rotor behaviour
Electromagnetics
  • FEMM meshing process now fully parametrized and optimized
  • Possibility to remove slotting effect in subdomain models
  • Possibility to run FEMM with an ideal B(H) curve (infinite permeability of the iron) to improve comparisons with subdomain models
  • Possibility to specify loss curves with different flux density values for each frequency
Mechanics
  • Possibility to calculate the cogging torque and torque ripple based on Maxwell stress method
  • Effect of boundary conditions clamped, simply supported, free) on analytical calculation of natural frequencies
  • Adding Young modulus (E) for outer rotor
  • Direct, tooth and rotating excitation wave method can now be calculated from ".mat" result file (for OptiStruct coupling)
Computation
  • Symmetries in space and time are now implemented and allow to speed up calculation time
  • Time FFTs can now handle odd number of points
  • New text output added (fundamental flux densities for instance)
  • Better calculation of end winding length depending on winding type
Simulation Setup
  • Simulation and machine GUI beta version
  • Possibility to specify Input.Magnetics.Ntsp1 OR Input.Magnetics.Ntcoil1
  • Possibility to define a interval of integer as an input for a sensitivity study
  • Possibility to run a sensitivity analysis on a variable speed simulation
  • Possibility to run a pre-processing script before a multi-simulation

Topologies and materials

  • Trapezoidal magnet for outer rotor
  • Slot type 13
  • Possibility to choose how to fill the magnet base for outer rotor applications

Plot commands

  • plot_ASPL_13oct plots the A-weighted sound pressure level spectrum in one third octave
  • plot_Br_space plots the airgap total radial flux density as a function of space
  • plot_Br_vectors plots the space and time vector interactive diagrams of the FFT2 of radial flux density with the conv product of airgap permeance and stator mmf
  • plot_Bt_space plots the airgap total tangntial flux density as a function of space
  • plot_Fr_vectors plots the space and time vector interactive diagrams of the FFT2 of radial magnetic force with the maxwell stress tensor, only taking into account radial flux density
  • plot_Ft_vectors plots the space and time vector interactive diagrams of the FFT2 of tangential magnetic force with the maxwell stress tensor
  • plot_FxFy for inner stator
  • plot_VS_Lvib_overall plots the overall velocity vibration level at variable speed
  • plot_VS_Vr_spectrogram draws the radial velocity level spectrogram (variable speed vibration spectrum), assuming all lines are proportional to supply frequency

Validations

The following validation cases have been added to make sure MANATEE results stay correct from a release to another:

  • ALG_010 : check of both time & space symmetries
  • ALG_011 and ALG_012 for automated harmonic analysis
  • EL_SCIM_006 for the SPEC parameters
  • EM_BPMSM_NL_003 : BPMSM fixed speed no load, (V-shape), non linear FEMM Vs permeance mmf
  • EM_SCIM_NL_009 : permeance mmf model validation of the induction machine, off load
  • EM_SPMSM_AL_007 : outer rotor PMSM, comparison between FEA and subdomain model for armature field
  • EM_SPMSM_FL_007 : Same as EM_SPMSM_FL_004 but focusing on airgap flux instead of torque
  • EM_SPMSM_NL_016 : outer rotor PMSM at no-load, comparison between FEA and permeance/mmf model
  • EM_SPMSM_NL_017 : outer rotor PMSM at no-load, comparison between FEA and subdomain (magnet field)
  • EM_SPMSM_NL_018 : validation of the optimal rotor skew
  • EM_SPMSM_NL_019 : outer rotor PMSM at no-load, comparison between FEA and permeance/mmf model
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