[SBOML-002] V-IPM 300kW

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Model Data
Designer Data

[Designer Data] is available in JMAG-Designer Ver. 25.1 or later.

Features and principal use

Model Diagram

V-IPM 300kW
8-pole/48-slot V-shaped IPM Motor for the Primary EV Traction Drive
Run multi-disciplinary magnetic field, thermal, and structural analyses,
using dimensions as design variables while keeping all other parameters the same.

  • Efficiency Map
    • DC Voltage: 800V
    • Max. Current: 565A
  • Demagnetization analysis
    • Current: 936A
  • Stress Analysis
    • Rotational Speed: 21,600rpm
  • Thermal Analysis
    • Max. Torque: 1,000rpm
    • 11,500rpm 40Nm

Reference Materials Used to Create Model

[1] Marika Kobayashi, “A Study on High Performance of Rare-Earth-Saving and Rare-Earth-Free Motors Using Reluctance Torque”, Ph.D Thesis、Osaka Prefecture University, 2022. https://cir.nii.ac.jp/crid/1910583860648766848

[2]Bin Zhang, Xiuhe Wang, Ran Zhang and Xiaolei Mou, "Cogging torque reduction by combining teeth notching and rotor magnets skewing in PM BLDC with concentrated windings," 2008 International Conference on Electrical Machines and Systems, Wuhan, China, 2008, pp. 3189-3192.

[3] Yuki Shimizu,"Research on Design Optimization of IPMSMs for Automotive Applications“, Ph.D Thesis、Osaka Prefecture"、Ph.D Thesis、Osaka Prefecture University, 2022．https://cir.nii.ac.jp/crid/1910020910695345536

[4] S. Chowdhury, E. Gurpinar, G.-J. Su, T. Raminosoa, T. A. Burress, and B. Ozpineci, “Enabling technologies for compact integrated electric drives for automotive traction applications,” in Proc. IEEE Transp. Electrific. Conf. Expo (ITEC), 2019, pp. 1–8.

Design Variables

Design Variables
#1 mBackYokeThickness (14-25)mm
#2 mFluxBarrierDepth (7-15)mm
#3 mMagnetThickness (4.5-6.5)mm
#4 mMagnetWidth (10-22)mm
#5 mPoleArcAngle (29-40)deg
#6 mdSlotOpening (1.5-3.5)mm
#7 strAuxBridgeThickness (0.7-2)mm
#8 strBridgeThickness (0.7-2)mm
#9 strInterMagnetRibThickness (0.7-4)mm
#10 mSlotWidth (3-5.5)mm
#11 mSlotDepth (16-28)mm

Target, Constraints

Target

Stator (Outside Diameter) StatorOuterDiameter Minimise
WLTC Cycle Efficiency WLTCCycleEfficiency Maxmise

Constraints

Max. Power MaxPower >= 300kW
Max. Torque MaxTorque >= 500 Nm
Max. Torque
Operation Time		 CoilOperatableTimeAtLowSpeedMaxCurrent >= 30 sec
Magnet Area Subject to Demagnetization DemagRatioInPercent <= 5%
Max. Stress MaxMiesesStress <= 370 MPa
Max. Coil Temperature CoilAverageTemperatureAtHighSpeedCruise <= 144 deg C
Max. Magnet Temperature MagnetAverageTemperatureAtHighSpeedCruise <= 100 deg C

Surrogate Model

Training Datasets

The training datasets to create the surrogate model consist of 32,090 analysis cases.

Surrogate Model Accuracy (1)

Surrogate Model Accuracy
Surrogate Model Accuracy

Surrogate Model Accuracy (2): Coefficient of Determination (R2)

Stator (Outside Diameter) StatorOuterDiameter 0.9999
WLTC Cycle Efficiency WLTCCycleEfficiency 0.9974
Max. Power MaxPower 0.9995
Max. Torque MaxTorque 0.9994
Max. Torque Operation Time (temperature) CoilOperatableTimeAtLowSpeedMaxCurrent 0.9984
Area of the Magnet to be Demagnetized DemagRatioInPercent 0.9843
Max. Mieses stress MaxMiesesStress1 0.9996
MaxMiesesStress2 0.9992
MaxMiesesStress3 0.9984
MaxMiesesStress4 0.9991
Max. Coil Temperature CoilAverageTemperatureAtHighSpeedCruise 0.9977
Max. Magnet Temperature MagnetAverageTemperatureAtHighSpeedCruise 0.9748