White Papers
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[W-MB-153] Accuracy and Speed Verification of Motor Plant Models Accounting for Spatial Harmonics
This document uses JMAG-RT, which is a type of plant model, to show the relationship between the resolution and accuracy of each axis (mechanical angle, current amplitude, and cur…
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[W-SE-99] High Speed Magnetic Field Analysis with SMP Solver
The parallel solver is one way to run magnetic field analysis at high speed. JMAG has an SMP-parallel solver that can easily be used with a single click on the computer.
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[W-MB-152] Accuracy of Motor Plant Model Required for ECU testing
ECU testing is performed under various conditions from the normal to the abnormal system.
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[W-MB-155] Accuracy of 6-Phase Motor Plant Models for Detecting Faults at Disconnections
Multiphase motors have become widely used, and a fail-safe function can be realized by providing a system with redundancy.
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[W-MB-151] Accuracy of Motor Plant Model Required for Control Calibration
Control calibration is time-consuming work because it is carried out for every operating point using the actual machine.
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[W-MB-157] Evaluation of the Effect of Resolver Eccentricity on PM Motor Torque Ripple Control
VR-type resolvers are widely used as angle sensors to control the rotation of traction motors for electric vehicles and hybrid vehicles.
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[W-MO-164] Investigation in the Accuracy of FEA Based Efficiency Maps for PMSM Traction Machines
In this report, three methods are compared on a PMSM showing that the accurate version is necessary for advanced applications such as EV. It shows that the accurate version based …
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[W-MB-167] Motor Plant Model Considering AC Loss for Control Calibration
Control parameter calibrations on Model-In-the-Loop Simulation (MILS) with Finite Element Analysis (FEA) based motor models is expected to be a standard procedure in the Model-Bas…
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[W-OP-166] Sensitivity Study of Configuration of Large Scale Multi-Objective Optimization of a PMSM
The feasible solution space of large scale multi-objective optimization schemes is sensitive to the configuration (population size, objectives, constraints, and design variables).
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[W-MA-100] Introducing the Detailed Analysis Method for Electromagnetic Steel Sheet for High-Precision Loss-Assessment
Here, we use a simple example and consider the significance of taking into account the eddy currents and magnetic hysteresis during magnetic field analysis.
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[W-OP-119] Global Design Search of Multi-Objective Multi-Constraint Optimization Issues by Narrowing Down Design Spaces
This document shows a reduction in calculation costs by narrowing down the design space as an optimization calculation pre-process using PM motor optimization issues as an example…
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[W-MA-67] On the Geometry Edge Effects in Laminated Steel Sheet Eddy Current Loss Analysis
In this white paper, based on the results of this analysis, the scenarios where the 2D + 1D method degrades accuracy are made clear and issues to be addressed in the future are pr…
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[W-SE-98] Improved Durability for Automatic Mesh Generation
This white paper assesses the durability of JMAG's automatic mesh generation feature.
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[W-MO-114] Comparison of Efficiency Map with Measurement
This document compares an efficiency map obtained with simulations with an efficiency map consisting of actual measurements, achieving an error of 1% or less for entire regions.
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[W-MA-76] Material Modeling Method for Electromagnetic Field/Iron Loss Analyses Considering Residual Strain
This paper proposes an electromagnetic field analysis and iron loss analysis based on the assumption that the effect of punching can be expressed as a function of the distance fro…
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[W-SE-95] Improvement in Generation of Three-Dimensional Skin Mesh
We have improved the reliability of skin mesh generation for JMAG-Designer in this work, and thus, its details are introduced in this paper.
