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Magnetic field (magnetic field) analysis software (simulator) using finite element method for static analysis ■□■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. ■ 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. ■ 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) ■ The use of finite element method ensures stable solutions, making it safe for beginners to use. ■ Coupled calculations with stress analysis and fluid analysis are easy to perform.

Magnetic field (magnetic field) analysis software (simulator) using the magnetic moment method for static analysis ■□■Features■□■ ■ You can create an analysis model without creating an air region. ■ It is integrated with the PHOTO series dedicated pre-post, allowing for a seamless operation from data creation to analysis and result processing. ■ By setting the analysis type to inverse problem, you can infer the magnetization of magnetic materials from the magnetic flux density distribution file. ■ You can create display elements to evaluate the analysis values in space.

We conducted a three-dimensional nonlinear static magnetic field analysis by arranging coils in a structure using our "PHOTO-MAG." The analysis focuses on the magnetic flux density flowing inside when a direct current is passed through the coils. The analysis model was created using symmetry, resulting in a 1/2 model. We compared the measured values with the analysis results obtained using our software. Detailed analysis result diagrams can be viewed through the related links. 【Case Overview】 ■ Analysis Subject: Structure composed of iron plates and coils ■ Software Used: PHOTO-MAG ■ Current Value: 1000 [AT] ■ Input Items: Only magnetic characteristics were input *For more details, please download the PDF or feel free to contact us.

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.

Using the hysteresis analysis function, we conducted magnetization analysis of magnets with high coercivity. A cylindrical magnet was magnetized using a coil. The current was increased from 0[A] to a maximum value and then returned to 0[A]. The magnetic field in the space at that time was analyzed. The hysteresis analysis function uses "hyperbolic function approximation" as a method to represent the hysteresis loop in this case. The hyperbolic function approximation takes coercivity, remanent magnetization, and saturation magnetization as input values, and these values along with the hyperbolic function determine the hysteresis loop. [Case Overview] ■ Software Used: PHOTO-MAG ■ Analysis Type: 3D Nonlinear Magnetic Field Analysis (1/4 model due to shape symmetry) *For more details, please refer to the related links or feel free to contact us.

IPM motors have a structure in which magnets are embedded in the rotor, allowing for the utilization of both magnetic torque and reluctance torque, making them widely used as high-efficiency motors. In this analysis, we examined the induced voltage in an unloaded state and the torque waveform under load conditions. The magnets are input with a magnetization vector, and the coil current is input as current density. The current density is set with a time point sequence of a three-phase AC waveform. By setting the rotational speed at the nodes that make up the rotor, rotation is taken into account. [Case Overview] ■ Analysis Type: 2D Nonlinear Magnetic Field Analysis ■ Software Used: PHOTO-MAG *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. A coil is placed outside the shield to calculate the internal magnetic field. The analysis model uses the "Box shield model" proposed by the Electrical Engineering Society's Investigation Committee. An external field coil is used, and the analysis model is set to a 1/8 model due to symmetry. The analysis type is nonlinear static magnetic field analysis. Eddy currents are not considered. We have included diagrams of the B-H characteristics of the ss400 used in this analysis, so please refer to the related links below for more details. 【Case Overview】 ■ Analysis Model: Box shield model ■ Analysis Type: Nonlinear static magnetic field analysis ■ Software Used: PHOTO-MAG *For more details, please refer to the related links or feel free to contact us.

The "hysteresis model using free energy" developed by our company incorporates the free energy of magnetic materials obtained through thermodynamic considerations and the movement of magnetic walls as a friction model. This approach is based on physics rather than a mathematical model. Methods such as ICCG and Newton-Raphson can be directly utilized, allowing for improved representation of hysteresis curves, including minor loops, and enabling vectorization (magnetic anisotropy). In the calculation examples using this method, we will verify whether hysteresis curves that can be expressed mathematically can be reproduced through simulation. We focused on analyzing a single component. If you are interested in magnetic field analysis considering hysteresis, please feel free to contact us. [Case Summary] ■ Software Used: PHOTO-MAG *For more details, please refer to the PDF document or feel free to contact us.

The case of analyzing the magnetic field created by magnets and coils is called a forward problem. On the other hand, the problem of determining magnetization or current from the magnetic field distribution is called an inverse problem. In this instance, we will introduce a case where we estimate the magnetization inside a magnet from numerical data of the magnetic flux density on the surface of a plastic magnet, and analyze the magnetic flux density created by that magnetization (inverse problem). For convenience, we will estimate the magnetization from the magnetic flux density obtained through the forward problem and calculate the magnetic flux density at a different location. Since we will use the results of the forward problem, we can compare the results of the forward and inverse problem analyses and evaluate the validity of the inverse problem analysis function. [Case Overview] ■ Software Used: PHOTO-MAGTZ ■ Analysis Results - The magnetic flux density at a position 1mm away from the surface of the magnet is generally consistent between the forward and inverse problems. - There are multiple magnetization distributions that show the same magnetic flux density. *For more details, please refer to the PDF document or feel free to contact us.

The analysis of the actuator involves examining the forces that occur between the driver and the stator when the driver, composed of magnets and magnetic materials, is displaced by a differential z [mm] in the axial direction. For more details, please download the catalog.

The claw pole motor is divided into the rotor and stator parts, each having a structure as shown in the figure. By incorporating the magnetization of the permanent magnets determined through pre-magnetization analysis, the rotor is rotated in an unloaded state to perform torque analysis. Although this is an analysis involving rotation, it can be conducted without regenerating the air mesh of the gap (the space between the rotor and stator) by using PHOTON's uniquely developed new slide interface. 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 "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.