White Papers
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[W-MA-88] Improvements in Accuracy of Anomalous Eddy Current Loss Calculations (1)
In iron loss analysis, conventionally, methods using previously measured iron loss data have been mainly used (hereinafter referred to as conventional methods).
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[W-MA-70] Mesh Modeling for Coil AC Loss Analysis
In this report, coil AC loss analysis is examined from the perspective of mesh modeling.
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[W-SE-72] Reduction of Time Steps by Using Time Periodic Explicit Error Correction Method
In electrical equipment design, Computer Aided Engineering (CAE) software is used to make the best possible products within allowable timelines.
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[W-MO-23] Measurement of PM Motor Vibration/Noise and Analysis Modeling
While miniaturization and efficiency optimization are always in demand in motor development, demand is also increasing for the reduction of vibration and noise in recent years. As…
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[W-SE-74] Electromagnetic Force Calculations Using the Adaptive Function
In this report, we clarify the causes of measurement errors for electromagnetic force as well as show that adaptive analysis can be the way to solve this issue. As a calculation m…
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[W-HU-71] Notes on Performance Evaluation and Hardware Selection of JMAG Parallel Solver
This document can be thought of as pointers and precautions for hardware selection and software operation.
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[W-MA-51] Understanding Electromagnetic Phenomena in Steel Sheets Through Simulation
In the following, detailed physical phenomena in steel sheets can be acquired by simulation through the confirmation of analysis results in JMAG’s latest analysis function of the …
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[W-SE-101] Detailed Eddy Current Analysis of End Winding with Parallel Processing
To accurately obtaining the end-winding eddy current loss at high rotation speed, the influence of the magnetic field flux generated by the eddy current flow in every part of the …
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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-MB-66] Accuracy Improvements in the JMAG-RT Induction Machine Model
In this paper, improvements in the accuracy of induction machine plant models when applied to automobile drive motors are discussed.
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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-OP-96] Necessity of GA for Multi-Objective Optimization of Drive Motor
In this paper, the multi-objective optimization calculation has 12 design variables (8 geometric variables, 4 circuit variables) with 6 objective functions (maximize torque, minim…
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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-SE-145] Highly Parallel Solver Performance Evaluation (Induction Heating)
This document uses as an example an induction heating model to evaluate the performance of the highly parallel solver. As a result, it was found that even in thermal-magnetic fiel…
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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-OP-165] Solving Geometry Conflicts in GA Optimizations with Large Numbers of Geometric Parameters
Genetic Algorithm (GA) based optimization with finite element analysis is expected to become a solution for high performance motor designs which need to satisfy many strict requir…
