White Papers
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[W-TR-15] Loss Evaluation of a Transformer Shield Based on the Homogenization Method
In this paper, each electromagnetic steel sheet of the shield is not modeled; by applying the homogenization method which replaces magnetically and electrically equivalent materia…
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[W-MO-24] Copper Loss Analysis of a Rotating Machine Using the Zooming Method
In this paper, this method is applied to a copper loss characteristics analysis of wires in a 2D rotating machine as well as a loss analysis of litz wires in a 3D rotating machine…
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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-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-SE-75] Iterative Calculations and Convergence Characteristics
In this report, we will explain the convergence criteria of a local quantity and the improvement of the determination of convergence of ICCG. And then, we describe that these idea…
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[W-SE-113] Reduction of Calculation Time Using Equivalent Circuit Model
In electrical machine design, the use of coupled analysis between the electromagnetic FEA and the motor drive control circuit is necessary in order to have an understanding of the…
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[W-MA-111] Improvements in Accuracy of Anomalous Eddy Current Loss Calculations (2)
The iron loss analysis method the most commonly applied uses measured iron loss data (hereinafter referred to as the conventional method). In the conventional method, since the ap…
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[W-MB-102] Motor Efficiency Map Evaluation for Model-Based Development (MBD) Using FEA Simulation
In MBD, it is necessary to evaluate devices characteristics without having to wait for the manufacturing of a prototype.
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[W-MO-17] Alternator Analysis Using Tetrahedral/Pentahedral Mixed Mesh
This paper looks at tetrahedral/pentahedral mixed mesh and aims to generate effective mesh to reduce calculation time. We compared calculation times and accuracy when analysis is …
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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-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-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-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-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-MO-12] Comparative Evaluation of Synchronous Impedance of a 2D Model and a 3D Model
This case study makes the differences clear between 2D and 3D models by comparing the synchronous impedances obtained from the analysis results of 2D and 3D models, and shows that…
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[W-MB-156] Improving Motor Plant Model Accuracy by Accounting for Harmonic Iron Loss
Because of the acceleration of the motor and the effect of the PWM drive, it is becoming more important to account for loss in order to improve accuracy even for analysis using mo…
