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Behzad F.,Infolytica Corporation | Zhao Z.,Hebei University of Technology
2015 IEEE International Magnetics Conference, INTERMAG 2015 | Year: 2015

The modeling and prediction of the iron loss inside components under extreme excitation, including DC-biasing, multi-harmonic or PWM supplies, in large electromagnetic devices, are becoming increasingly important. However, the related measurement and electromagnetic analysis are quite challenging due to the material's working property data measurement and the 3-D transient field computation under such extreme excitations, also making the validation of the modeling and analysis difficult [1]-[4]. © 2015 IEEE.

Cheng Z.,Baoding Tianwei Group Co. | Takahashi N.,Okayama University | Forghani B.,Infolytica Corporation | Gilbert G.,Infolytica Corporation | And 6 more authors.
IEEE Transactions on Magnetics | Year: 2010

In this paper, the effect of different excitation patterns on both the iron loss and flux inside solid magnetic steel plates and laminated silicon steel sheets is investigated. Some practical approaches to nonlinear and anisotropic eddy-current problems under 3-D excitation conditions are proposed, in which the usual measured loss data is not adequate within the penetration depth where the eddy currents are induced by fluxes normal to the lamination. The benchmark results based on member models of Problem 21 with new extensions are presented to validate the proposal and to observe the electromagnetic behavior of the magnetic steel under different excitation patterns. The extensions to the benchmark Problem 21 are helpful for further Testing Electromagnetic Analysis Method (TEAM) activities. © 2006 IEEE.

Cheng Z.,Baoding Tianwei Group Co. | Takahashi N.,Okayama University | Forghani B.,Infolytica Corporation | Moses A.J.,University of Cardiff | And 6 more authors.
IEEE Transactions on Magnetics | Year: 2014

The extended modeling of the magnetic properties of grain oriented electrical steel is presented in this paper which is based on a set of standard and scaled-down Epstein frames and a proposed two-level weighted processing of Epstein data, including the mean magnetic path length, specific magnetization loss and exciting power. The effects of excitation frequency, strip angle, and ambient temperature on the results obtained from the Epstein frames are investigated. It is shown that using the proposed Epstein combination and the two-level weighted processing method is an efficient way of building a model for determining magnetic losses more realistically, hence, improving the value of Epstein strip measurement data. Index Terms - Epstein test, exciting power, grain oriented electrical steel, mean magnetic path length, specific magnetization loss. © 2013 IEEE.

Zhang J.,Baoding Tianwei Group Co. | Zhang J.,North China Electrical Power University | Li L.,North China Electrical Power University | Liu L.,Baoding Tianwei Group Co. | And 3 more authors.
Diangong Jishu Xuebao/Transactions of China Electrotechnical Society | Year: 2013

The measurement and 3D finite element analysis of the iron loss, interlinkage flux inside the laminated silicon steel sheets and the magnetic flux densities at the specified positions are carried out based on a verifying silicon steel sheet model. The modeling results show that the leakage flux vertically through the silicon steel sheets has the peculiarity of shin effect, and the eddy current loss caused by the AC leakage flux is a significant component of the total iron loss. The calculated results by means of the software MagNet® agree with the measured ones, and show the method presented in this paper is validated.

Cheng Z.,Baoding Tianwei Group Co. | Takahashi N.,Okayama University | Forghani B.,Infolytica Corporation | Liu L.,Baoding Tianwei Group Co. | And 6 more authors.
COMPEL - The International Journal for Computation and Mathematics in Electrical and Electronic Engineering | Year: 2014

Purpose - The purpose of the paper is to give a review of TEAM Problem 21, focus on its extended progress in engineering-oriented developments, and report the new benchmarking activity undertaken by the authors. Design/methodology/ approach - Testing electromagnetic analysis methods; verify computation models; detail the field behavior of typical magnetic structure; benefit to large-scale numerical modeling. Findings - The calculated results of power loss and magnetic flux for all the member models agree well with the measured ones. The updated Problem 21 Family can now be used to model the saturation effect in the magnetic plate or the lamination by increasing the exciting currents. The new member model P21d-M allows further detailed examination of the electromagnetic behavior inside laminated sheets. The variation of both the iron loss and the magnetic flux with the excitation patterns and magnetic property data can be investigated inside the laminated sheets and the magnetic plate. Originality/value - In order to model the possible saturation level of magnetic steel using Ar-V-Ar or T-O solvers, the exciting currents are increased from 10 to 50?A. In order to model the iron loss and magnetic flux densities inside the laminated sheets, a very simplified model, P21d-M of Problem 21 Family as shown in Figure 2, has been proposed. Copyright © 2014 Emerald Group Publishing Limited. All rights reserved.

Cheng Z.,Baoding Tianwei Group Co. | Takahashi N.,Okayama University | Forghani B.,Infolytica Corporation | Du Y.,Baoding Tianwei Group Co. | And 4 more authors.
IEEE Transactions on Magnetics | Year: 2011

The effect of the variation of B-H properties obtained by different means and data access modes on iron loss and flux in grain oriented (GO) silicon steel laminations is investigated under different exciting frequencies in order to determine an efficient numerical approach to model the lamination configurations. The computational and experimental results are demonstrated on benchmark models in which the 3-D excitation and skin effect play a significant role. © 2011 IEEE.

News Article | November 1, 2016

Infolytica Corporation today released a new version of their industry-leading MotorSolve software. The motor results in MotorSolve BLDC version 6 can be extended with a new generator analysis solver. This set of loads, parameters and results are for both AC generators and motors operating in generating mode. Any electrical machine template in the BLDC module can be simulated in motor mode or generator mode, depending on the operating condition. An optimal generator design will be different to an optimal motor design. Most software tools use the fact that motors can act as generators and address only motors. MotorSolve v6 addresses the need for a specialized generator design tool. Using MotorSolve version 6, AC generators (PMG, PMA, and Brushless AC) and motors operating in generating mode can be properly simulated and analyzed. There are five common load types available: diode rectifier, no load or open circuit, short-circuit, passive impedance loads and infinite bus (connection to a large AC system or grid). The operating points conditions can be analyzed at maximum power and short-circuit current. Performance charts for generators include voltage regulation, voltage vs. current, power vs. speed and many more. Phasor diagrams for both motors and generators have also been added in the latest update to the software. There have been improvements to the winding diagrams, as well, with three new options added: Görges plot, MMF plot and an animated MMF plot. Cogging Torque for a BLDC machine: the minimum skew required to produce zero cogging torque is shown as an option for the user. The inline help of MotorSolve now includes new video tutorials which demonstrate how to use the different features of the software, making learning easier and faster. MotorSolve v6 is now available for Microsoft Windows 7, 8 or 10. For information about the full list of improvements, request a demo, quote or full feature evaluation, please contact an Infolytica Corporation representative nearest you. Infolytica Corporation has offered state-of-the-art design software for electromagnetic and electric field simulations since 1978. Engineers from a wide range of industries trust our software to understand and predict the performance of their device in applications such as electric machines, sensors and non-destructive testing (NDT), induction heating, MRI, shielding, power transformers and much more. Subscribe to our RSS feed to ensure you receive all the latest news from Infolytica Corporation

Dyck D.N.,Infolytica Corporation | Rahman T.,Infolytica Corporation | Dufour C.,Opal - RT Technologies
IEEE Transactions on Magnetics | Year: 2014

Hardware-in-the-loop simulation allows hardware implementations of some components of a system to be tested in conjunction with other components that are only emulated based on behavioral models. For example, a physical prototype of an engine control unit for a hybrid vehicle can be tested with virtual prototypes of the motor and vehicle. This paper presents a new method to obtain realistic behavioral models of PM synchronous machines from finite element analysis. The new method guarantees that the model will be internally consistent; for example, it will not violate the principle of conservation of energy. © 2014 IEEE.

Dyck D.N.,Infolytica Corporation | Gilbert G.,Infolytica Corporation | Lowther D.A.,Infolytica Corporation
IEEE Transactions on Magnetics | Year: 2010

The goal of this paper is a method for the simulation of an induction motor driven with a pulse width modulation (PWM) three-phase bridge. The approach taken here decouples the circuit simulation from the electromagnetic field simulation by first constructing a performance model of the machine using 2D finite element (FE) analysis. The model consists of the complete matrix of the self- and mutual inductances of the stator windings and each of the rotor bars. Skew is taken into account by a correction applied to the winding-bar inductance entries in the matrix. © 2006 IEEE.

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