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The software for magnetic field analysis using the finite element method (magnetic field simulator) performs static analysis and transient response analysis. It can handle three-dimensional, two-dimensional, and axisymmetric problems. ■□■Features■□■ ■Since it is an integrated pre-post tool dedicated to the PHOTO series, data creation, analysis, and result processing can be performed as a series of operations. ■It is integrated with other PHOTO series modules, allowing for easy coupled analysis, such as deriving temperature distribution from heat generation obtained through electromagnetic field analysis. ■A revolutionary speedup has been achieved through the combined use of edge element method and ICCG method (tens of times faster than conventional finite element methods). ■The use of the finite element method ensures stable solutions, making it safe for beginners to use. ■When coupled with the thermal conduction analysis software PHOTO-THERMO, it is possible to calculate temperature distribution from Joule heating within conductors.

Perform frequency response analysis Finite element method magnetic field analysis software (magnetic field simulator) ■□■Features■□■ ■Since it is integrated with the PHOTO series dedicated pre-post, data creation, analysis, and result processing can be performed as a series of operations. ■It is integrated with other PHOTO series modules, allowing for easy coupled analysis, such as obtaining temperature distribution from heat generation determined by electromagnetic field analysis. ■A revolutionary speedup has been achieved through the combined use of edge element method and ICCG method (dozens of times faster than conventional finite element methods). ■When a sine wave input is used and linear approximation holds, results can be obtained in a single calculation without the need for time-stepping calculations. ■Since it uses the finite element method, the solutions are stable, making it safe for beginners to use. ■Coupled calculations with thermal conduction analysis, stress analysis, and fluid analysis are easy.

■ Magnetic field/magnetic field analysis software (magnetic field simulator) using a combination of finite element method and H-method, capable of performing static analysis and transient response analysis. ■ Can handle three-dimensional problems. ■□■ Features ■□■ ■ Can create analysis models without creating air regions. ■ Integrated with the PHOTO series dedicated pre/post-processing, allowing data creation, analysis, and result processing to be performed as a single operation. ■ Achieves revolutionary speedup through the combination of edge element method and ICCG method (dozens of times faster than conventional finite element methods). ■ Provides stable solutions using finite element method, making it safe for beginners to use.

■ Magnetic field/magnetic field analysis software (magnetic field simulator) using a combination of the finite element method and H-method, capable of performing static analysis and frequency response analysis. ■ Can handle three-dimensional problems. ■□■ Features ■□■ ■ Can create analysis models without creating air regions. ■ Integrated with the PHOTO series dedicated pre- and post-processing, allowing data creation, analysis, and result processing to be performed as a single operation. ■ Achieves revolutionary speedup through the combination of edge element method and ICCG method (dozens of times faster than conventional finite element methods). ■ Provides stable solutions using the finite element method, making it safe for beginners to use.

When a magnet is brought close to a gear made of a magnetic material, the distribution of the surrounding magnetic field changes depending on the position and rotation speed of the gear. A permanent magnet was placed near the rotating gear, and the changes in the surrounding magnetic field were analyzed. As a result, in the comparison of magnetic flux density due to rotation speed, the gear rotating at high speed exhibited a larger magnetic field along the edge of the gear, and a magnetic field due to eddy currents remained even when it was away from the magnet. 【Case Summary】 ■ Analysis Type: 3D Nonlinear Transient Magnetic Field Analysis ■ Analysis Module: PHOTO-EDDY *For more details, please refer to the related links or feel free to contact us.

This is an introduction to a case study analyzing the magnetic flux density distribution, self-inductance, and mutual inductance of a transformer composed of primary and secondary windings and a magnetic circuit (iron core) when excited. The software "PHOTO-EDDYTMjω" was used. A current of 1A at a frequency of 1000Hz was applied to the primary and secondary windings. Additionally, the number of nodes was 18,118, and the number of elements was 13,648, with the shape modeled in three dimensions as a full model. [Case Overview] ■ Software Used: PHOTO-EDDYTMjω ■ Analysis Conditions - Model using iron core and primary/secondary windings - Applied a node current of 1A at 1000Hz to the primary and secondary windings *For more details, please refer to the related links or feel free to contact us.

We will introduce the analysis results of current distribution (real part and imaginary part) and self-inductance. The mesh scale consists of 11,200 elements and 15,088 nodes. Using the magnetic field analysis module "PHOTO-EDDYTMjω," it is possible to analyze with a mesh of only conductors, eliminating the need for an air mesh. 【Case Overview】 ■ Software Used: PHOTO-EDDYTMjω ■ Analysis Conditions ・ Current Value: 1[A] ・ Frequency: 1000[Hz] *For more details, please refer to the related links or feel free to contact us.

We will introduce the analysis results of eddy current distribution, self-inductance, and mutual inductance. The analysis was conducted for three cases: only conductor 1, only conductor 2, and both conductors 1 and 2 carrying current. The mesh scale consists of 3,200 elements and 4,800 nodes. Using the magnetic field analysis module "PHOTO-EDDYTMjω," it is possible to perform the analysis with a mesh of only the conductors, eliminating the need for air mesh. [Case Overview] ■ Software Used: PHOTO-EDDYTMjω ■ Analysis Conditions - Current Value: 1[A] - Material Properties: Relative Permeability 1.0, Electrical Conductivity 1.0×10^6[S/m] - Frequency: 1.0[kHz] *For more details, please refer to the related links or feel free to contact us.

This is a case study analyzing the current distribution of superconducting tape using transient magnetic field analysis with the H method. The "n-value model" is used for the E-J characteristics of the superconducting tape. By using the magnetic field analysis module "PHOTO-EDDYTM," it is possible to analyze with a mesh of only the conductor, eliminating the need for an air mesh. 【Case Overview】 ■ Software Used: PHOTO-EDDYTM ■ Analysis Conditions ・Current Value: 50[A] (maximum)… varies over time according to a function ・Material Conditions: Relative permeability 1.0, electrical conductivity as per program [S/m] ・The "n-value model" is used for the E-J characteristics of the superconducting tape. *For more details, please refer to the related links or feel free to contact us.

We will introduce the analysis results when using coils and external field coils with the finite element method (FEM) for the same analysis target. We adopted "Team Workshop Problem 7," which involves placing a coil on a perforated conductor. Since this problem has measurement values, we compared the results under three conditions: FEM, external field coil, and measurement values, and we also conducted analyses with the coil moved. In the results of the external field and FEM, the graphs overlapped, and the comparison with the measurement values was also favorable. 【Case Overview】 ■ Software Used: PHOTO-EDDYjω ■ Analysis Conditions ・Frequency: 200 [Hz] ・Current Value: 2742 [AT] ・Electrical Conductivity of Conductor: 3.526×10^7 [S/m] ■ Results of External Field and FEM: The graphs overlapped, and the comparison with measurement values was also favorable. *For more details, please refer to the related links or feel free to contact us.

We will introduce a case where current was passed through a cable, and the current value flowing in the secondary coil and the induced voltage were analyzed. The analysis model utilized symmetry, creating a 1/2 model, and a high permeability magnetic material was used for the core. The current sensor consists of a ring-shaped core and winding, with the measured current flowing through the cable at the center of the core, allowing us to obtain a small current flowing in the winding (secondary side). 【Case Overview】 ■ Software Used: PHOTO-EDDYjω ■ Analysis Conditions - Current value of the primary coil: 10[A] - Frequency: 50[Hz] - Number of turns in the secondary coil: 1000[turns] - Load resistance of the secondary coil: 100[Ω] *For more details, please refer to the related links or feel free to contact us.

Induction machines that utilize electromagnetic induction are used in home appliances, escalators, and trains. Since eddy currents flow in induction machines, magnetic field analysis is necessary. The subject is a squirrel-cage three-phase induction motor, and considering the rotation of the rotor, the torque waveform during steady operation is analyzed. The analysis model is based on the benchmark model (K model) for induction motors from the Electrical Engineering Society's investigation committee. 【Case Overview】 ■ Analysis Type: 2D Nonlinear Transient Magnetic Field Analysis ■ Analysis Module: PHOTO-EDDY *For more details, please refer to the related links or feel free to contact us.

Here is an example of magnetic field analysis for magnetic shielding. The analysis model uses the "Box shield model" proposed by the Electric Society's Investigation Committee. The analysis model is based on symmetry and is a 1/8 model, using an external field coil. Dynamic magnetic field analysis is applied, taking into account eddy currents. 【Case Overview】 ■ Analysis Model: Box shield model ■ Coil: External field coil ■ Analysis Type: Frequency response dynamic magnetic field analysis ■ Shielding: Linear material *For more details, please refer to the related links or feel free to contact us.

This is a case study that confirms the current distribution observed when an alternating current flows through a conductor bundled with 19 strands of wire, using magnetic field analysis. Since frequency response magnetic field analysis is appropriate, the software "PHOTO-EDDYjω" was selected. The input voltage was adjusted to ensure that the maximum value of the resulting current density (absolute value) is 1. As a result, at a frequency of 1×10^5 [Hz], the current density was almost constant, while at a frequency of 1×10^7 [Hz], a concentration of current density was observed on the surface of the outermost layer of the conductor. 【Case Summary】 ■ Software Used: PHOTO-EDDYjω ■ Analysis Results - 1×10^5 [Hz]: Almost constant - 1×10^6 [Hz]: Gradual distribution of current density observed - 1×10^7 [Hz]: Concentration of current density observed on the surface of the outermost layer of the conductor *For more details, please refer to the related links or feel free to contact us.

We will introduce an analysis case of the electromagnetic force (Lorentz force) acting on eddy currents. Using the software "PHOTO-EDDY," we created a 1/4 model based on the symmetry of the shape. As a result, it was confirmed that the input current becomes 0 at 1.5 [μsec], but the Lorentz force continues to occur beyond 1.5 [μsec]. 【Case Overview】 ■ Software Used: PHOTO-EDDY ■ Analysis Results - It was confirmed that the magnetic flux density is concentrated on the surface due to the skin effect. - The input current becomes 0 at 1.5 [μsec], but it was confirmed that the Lorentz force continues to occur beyond 1.5 [μsec]. *For more details, please refer to the related links or feel free to contact us.

In recent years, research and development of wireless power transmission technology, which transmits power wirelessly, has been conducted. First, as a basic model, we consider two coils as shown in the left diagram. The transmitting coil and the receiving coil are arranged vertically, and circuit elements are connected to the coils. On our company website, we introduce analysis examples of wireless power transmission using electromagnetic induction. For more details, please refer to the related links below. 【Case Overview】 ■ Software Used: PHOTO-EDDYjω ■ Analysis Results ・Self Inductance: 358.7 [uH] ・Mutual Inductance: 38.4 [uH] *For more details, please check the related links or feel free to contact us.

Models that describe superconductors include the critical state model and the Kim model. The critical state model is a physical model that assumes a balance between the Lorentz force acting on the vortices and the pinning force caused by impurities inside the superconductor. In "PHOTO-EDDY," users can specify the constitutive equations, allowing for analysis not only with a constant Jc but also with the Kim model, where Jc depends on the magnetic flux density. The choice of which equations to use is up to the user. While care must be taken regarding the convergence of calculations, a high degree of freedom in input methods is available. 【Case Overview】 ■ Software Used: PHOTO-EDDY ■ Analysis Results - The superconductor was modeled using the critical state model, with a critical current density Jc of 1.0×10^9 [A/m²]. - When in a hollow core, the input current was adjusted so that the magnetic flux density at the center of the coil reached a maximum of 5 [T]. *For more details, please refer to the PDF document or feel free to contact us.

The number of nodes for the analysis of the thin film head is 65,670, and the number of elements is 61,089. The analysis conditions include the electrical conductivity of the magnetic material at 5×10^6 [Sm^-1], and the magnetic field characteristics of the magnetic material were based on the relationship between magnetic flux density and magnetic field (B-H curve) shown in the diagram. For more details, please download the catalog.

The calculation of electromagnetic force in the plunger model was performed for the plunger model proposed by the Institute of Electrical Engineers for electromagnetic force verification, where the electromagnetic force acting on the center pole and the magnetic flux density of each part of the model were calculated when current was passed through the coil. For more details, please download the catalog.

The eddy current testing (non-destructive testing) using the external field method has a significant analytical symmetry, which is divided into a conductor plate and a probe. The probe consists of two types of coils: an excitation coil and a differential detection coil. We calculated the eddy current distribution when a current with a frequency of 500 Hz was applied to the excitation coil of the probe, as well as the induced electromotive force in the differential detection coil. For more details, please download the catalog.

If metal is installed near an RFID card, the electromotive force generated in the card's circuit by the external primary coil is significantly reduced due to the demagnetizing effect from the metal. To suppress this demagnetizing effect, we analyzed the changes in electromotive force when a magnetic sheet is attached to the surface of the card using Photo-Eddyjω. For more details, please download the catalog.

In the PHOTO series, you can set the current density for models such as coils and perform coupled analysis with finite element models (such as magnetic materials) that are influenced by it, using it as an external field model.

The electromagnetic field analysis software "PHOTO-Series" is a simulation tool that can visualize magnetic field distributions and eddy current density distributions. It also analyzes the eddy current deep flaw detection method, which is one of the non-destructive testing methods for detecting the presence of defects. 【Features】 ● Each product is low-cost, allowing for the construction of systems composed of numerous modules, including coupled problems of electromagnetic field analysis, heat conduction, stress, and fluid analysis, at a low price. ● Each product is integrated with dedicated pre- and post-processing tools, equipped only with the necessary functions for electromagnetic field analysis, making it easy for beginners to operate smoothly. ● Academic pricing is available for use in educational institutions (half the regular price). ◆ If you are interested, please contact us via the 'Inquiry Form'.

The "PHOTO series" offers analysis solvers that utilize the most suitable simulation methods for a wide range of target fields, from high-frequency electromagnetic waves to low-frequency electric and magnetic fields, based on the analysis theme. Unlike other commercial software packages that handle all phenomena with a single analysis solver, we use the most appropriate analysis solver for the purpose, ensuring high analysis accuracy and detailed responsiveness to needs. Additionally, you can select only the necessary modules suited to the problem, which helps keep the implementation costs economical. It is also easy to expand functionality by adding modules, and by combining them, it is possible to handle coupled analyses such as heat generation due to eddy currents and stresses or deformations caused by electromagnetic forces. All products are compatible with three-dimensional problems, and the transient response analysis module can handle nonlinear materials.