White Papers
- Sort condition
- Newest first
- Oldest first
- Large number of views
-
[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).
-
[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.
-
[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.
-
[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.
-
[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…
-
[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…
-
[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…
-
[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…
-
[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.
-
[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 …
-
[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.
-
[W-MA-49] Necessity and Approach of Stray Load Loss Analysis
The main components of loss depend on the operating point. One of these components is stray load loss.
-
[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).
-
[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.
-
[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…
-
[W-SE-98] Improved Durability for Automatic Mesh Generation
This white paper assesses the durability of JMAG's automatic mesh generation feature.
