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■Coupled Analysis (Dynamic Magnetic Field + Heat Conduction) EDDYjω & THERMO

■Coupled Analysis (Dynamic Magnetic Field + Heat Conduction) EDDYjω & THERMO

This is a software for coupled analysis of magnetic fields/magnetic fields and heat conduction using the finite element method, performing static analysis and frequency response analysis.

This is a software for coupled analysis of magnetic fields/magnetic fields and heat conduction using the finite element method, capable of performing static analysis and frequency response analysis. It can handle three-dimensional, two-dimensional, and axisymmetric problems. ■□■Features■□■ ■Since it is integrated with the PHOTO series dedicated pre- and post-processing, data creation, analysis, and result processing can be performed as a series of operations. ■A revolutionary acceleration has been achieved through the combined use of edge element method and ICCG method (dozens of times faster than conventional finite element methods). ■Since it uses the finite element method, the solutions are stable, making it user-friendly even for beginners. ■The EDDYjω (magnetic field/magnetic field analysis module) and THERMO (heat conduction analysis module) are integrated, allowing for automatic transfer of heat generation density without the need for files. ■It is also possible to use EDDYjω and THERMO independently.

  • Magnetic field analysis/electromagnetic wave analysis
  • Analysis Services
  • Contract Analysis

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[Analysis Case] Electromagnetic Field Analysis of E-plane T-junction Waveguide

[Analysis Case] Electromagnetic Field Analysis of E-plane T-junction Waveguide

Using the analysis module "PHOTO-WAVEjω"! The scattering matrix was obtained from the analysis results.

We conducted an analysis using the finite element method to determine the distribution of electromagnetic waves input from each port in a T-shaped waveguide used for signal processing in radar and other applications. Three ports were set up on an E-plane T-junction waveguide. Due to symmetry, a 1/2 model was created, with natural boundary conditions on the XY plane and symmetric boundary conditions on the other sides. As a result, the absolute values of S31 and S13 calculated were 0.644 and 0.631, respectively, with an error of 2.0%. [Case Summary] ■ Analysis Module: PHOTO-WAVEjω ■ Analysis Results - The absolute values of S31 and S13 calculated were 0.644 and 0.631, respectively, with an error of 2.0%. *For more details, please refer to the related links or feel free to contact us.

  • Magnetic field analysis/electromagnetic wave analysis
  • Analysis Services
  • Contract Analysis

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Analysis Case: Yagi-Uda Antenna Analysis

Analysis Case: Yagi-Uda Antenna Analysis

Estimate electromagnetic waves from a distance using two different methods and compare the results! The shape was modeled in full.

The Yagi-Uda antenna is a directional antenna composed of a waveguide made up of multiple short elements and a long element reflector, along with a feed located in between. The electromagnetic waves radiated from the feed are analyzed using the finite element method, and based on the results, far-field plane waves are estimated. The feed radiates electromagnetic waves polarized in the Z-axis direction, and the behavior of the electromagnetic waves in the air region surrounding the entire antenna is analyzed using the finite element method. Next, based on those results, the far-field electromagnetic waves are estimated using two different methods, and the results are compared. The shape is modeled as a full model. [Software Used] ■PHOTO-WAVEjω *For more details, please refer to the related links or feel free to contact us.

  • Magnetic field analysis/electromagnetic wave analysis
  • Analysis Services
  • Contract Analysis

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[Analysis Case] Scattering Analysis of Plane Waves by a Dielectric Sphere

[Analysis Case] Scattering Analysis of Plane Waves by a Dielectric Sphere

Using the software "PHOTO-WAVEjω"! Analyzing the scattered waves after hitting a sphere using the finite element method.

We present a case where the scattered wave in the far field, when a plane wave is incident on a scattering body and scattered, is estimated using the finite element method. A plane wave polarized in the X-axis direction is incident in the Z-axis direction, and the scattered wave after it hits the sphere is analyzed using the finite element method. Next, based on those results, we estimate the scattered wave in the far field using two different methods and compare the results. The shape is modeled in full. [Software Used] ■PHOTO-WAVEjω *For more details, please refer to the related links or feel free to contact us.

  • Magnetic field analysis/electromagnetic wave analysis
  • Analysis Services
  • Contract Analysis

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[Analysis Case] Electromagnetic Wave Analysis of H-Plane Waveguide Right-Angle Corner

[Analysis Case] Electromagnetic Wave Analysis of H-Plane Waveguide Right-Angle Corner

Analysis was also conducted in the absence of a metal post! The analysis results at a frequency of 10.13 [GHz] are shown.

We will introduce a case study where metal posts were arranged to suppress the reflection of electromagnetic waves at 10GHz, and the frequency dependence of the reflection coefficient was analyzed. Impedance boundary conditions were set at the exit. The walls of the waveguide and the metal posts were treated as perfect conductors, and the input was provided as the TE10 electric field [V/m]. Additionally, an analysis was conducted for the case without metal posts for comparison. 【Case Overview】 ■ Software Used: PHOTO-WAVEjω ■ Analysis Conditions ・Waveguide: WRJ-10 (22.9mm × 10.2mm) ・The walls of the waveguide and the metal posts are perfect conductors ・The input was provided as the TE10 electric field [V/m] ・Impedance boundary conditions were set at the exit *For more details, please refer to the related links or feel free to contact us.

  • Magnetic field analysis/electromagnetic wave analysis
  • Analysis Services
  • Contract Analysis

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[Analysis Example] Electromagnetic Wave Analysis Animation Library for Waveguides

[Analysis Example] Electromagnetic Wave Analysis Animation Library for Waveguides

Introducing analysis examples such as "circular cavity" and "rectangular iris-coupled waveguide filter"!

On this page, we introduce electromagnetic wave analysis animations of waveguides such as "Magic T," "E-plane T-junction waveguide," and "twisted waveguide." 【Overview】 ■ Magic T ■ E-plane T-junction waveguide ■ Twisted waveguide ■ Circular cavity ■ Rectangular iris-coupled waveguide filter *Detailed information about the cases can be viewed through the related links. For more information, please feel free to contact us.

  • Magnetic field analysis/electromagnetic wave analysis
  • Analysis Services
  • Contract Analysis

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[Case Study] Analysis of Current Density Distribution in Superconducting Tape

[Case Study] Analysis of Current Density Distribution in Superconducting Tape

No need for air mesh! Load and analyze a pre-configured interpreter program at runtime.

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.

  • Magnetic field analysis/electromagnetic wave analysis
  • Analysis Services
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[Analysis Case] Eddy Current Analysis of Perforated Conductors Using External Coils

[Analysis Case] Eddy Current Analysis of Perforated Conductors Using External Coils

Comparison under three conditions: FEM, external field coils, and measurement values! Analysis with the coils moved was also conducted.

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.

  • Magnetic field analysis/electromagnetic wave analysis
  • Analysis Services
  • Contract Analysis

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[Analysis Case] Magnetic Field Analysis of Current Sensor (CT)

[Analysis Case] Magnetic Field Analysis of Current Sensor (CT)

The core uses a high permeability magnetic material! The analysis model utilizes symmetry, resulting in a 1/2 model.

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.

  • Magnetic field analysis/electromagnetic wave analysis
  • Analysis Services
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[Analysis Case] Magnetic Field Analysis of Induction Motors

[Analysis Case] Magnetic Field Analysis of Induction Motors

Using the analysis module "PHOTO-EDDY"! Considering the rotation of the rotor, analyzing the torque waveform during steady operation.

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.

  • Magnetic field analysis/electromagnetic wave analysis
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[Analysis Case] Frequency Response Dynamic Magnetic Field Analysis of Magnetic Shielding

[Analysis Case] Frequency Response Dynamic Magnetic Field Analysis of Magnetic Shielding

The analysis model is a 1/8 model! Coils are placed outside the shield to calculate the internal magnetic field.

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.

  • Magnetic field analysis/electromagnetic wave analysis
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[Analysis Case] Proximity Effect of Cable Strands (Magnetic Field Analysis)

[Analysis Case] Proximity Effect of Cable Strands (Magnetic Field Analysis)

The input voltage is adjusted to use a voltage that results in a maximum absolute value of the current density of 1!

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.

  • Magnetic field analysis/electromagnetic wave analysis
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[Analysis Case] Lorentz Force Acting on Eddy Currents (Electromagnetic Force Analysis)

[Analysis Case] Lorentz Force Acting on Eddy Currents (Electromagnetic Force Analysis)

Using the software "PHOTO-EDDY"! Confirmed that eddy currents are concentrated on the surface due to the skin effect.

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.

  • Magnetic field analysis/electromagnetic wave analysis
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[Analysis Case] Magnetic Field Analysis of Superconductors Considering the Critical State Model

[Analysis Case] Magnetic Field Analysis of Superconductors Considering the Critical State Model

The software used is "PHOTO-EDDY"! It is also possible to analyze Kim models that depend on magnetic flux density.

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.

  • Magnetic field analysis/electromagnetic wave analysis
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[Case Study] Static Magnetic Field Analysis Without Air Mesh

[Case Study] Static Magnetic Field Analysis Without Air Mesh

Simplifying the input of current density for complex-shaped coils! Introducing a case study of "PHOTO-MAGTZ" analysis.

In this case study, we will introduce static magnetic field analysis of various models. "PHOTO-MAGTZ" does not require air mesh. Therefore, it is easy to create models with complex shapes. Additionally, by inputting the current value into the coil, it is possible to simplify the input of current density for coils with complex shapes. You can view the analysis results from the related links below. 【Case Overview】 ■Analysis Module: PHOTO-MAGTZ *For more details, please refer to the related links or feel free to contact us.

  • Magnetic field analysis/electromagnetic wave analysis
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