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At Science Solutions Co., Ltd., we offer the "Motor Behavior Model" as a nonlinear motor model for 1D simulations. This document provides an easy-to-understand introduction to the behavior model, covering how to utilize it in evaluating motor drive systems and the simulation procedures. [Contents] ■ Introduction to EMSolution and its application products ■ What is the Motor Behavior Model? ■ What can it do? ■ Flow of analysis and implementation ■ Future collaboration and expansion plans ■ Introduction of various services The Motor Behavior Model from Science Solutions Co., Ltd. can achieve results much faster compared to conventional finite element method coupled analyses. For more details, please watch the video.

The motor behavior model of Science Solutions Inc. uses parameters such as current amplitude and phase, allowing for the reproduction of nonlinear elements like magnetic saturation and spatial harmonics of the motor on control and circuit simulators. It can be utilized as a high-precision model for 1D simulation in model-based development. 【Features】 ■ High-precision nonlinear motor model ■ Integration with general-purpose simulators and fast analysis ■ Support for special motor models (multi-phase multi-winding motors) *For more details, please refer to the PDF document or feel free to contact us.

In recent years, the demand for higher efficiency has been increasing, and improving the accuracy of iron loss analysis in motors has become a key issue, with attention being drawn to iron loss analysis that takes hysteresis characteristics into account. This document will shift the perspective slightly and focus on the cogging torque of IPMSMs, explaining the comparison between analyses using the BH curve and those considering hysteresis characteristics. 【Content of the document (excerpt)】 - What is cogging torque analysis of IPMSMs? - Results of cogging torque analysis - Discussion results 【Benefits of conducting hysteresis analysis】 - It is expected to improve the accuracy of iron loss analysis, contributing to the higher efficiency of motors. - Improved accuracy of cogging torque is anticipated to lead to further reductions in noise and vibration. *This document can be viewed by downloading the PDF. Please feel free to contact us for more details.

This document introduces useful examples related to modeling in three-dimensional motor analysis, which is a specialty of the electromagnetic field analysis software "EMSolution." Electromagnetic field analysis (FEA) is a powerful tool for motor design and development. The usefulness of electromagnetic field analysis for motors includes the ability to understand the physical phenomena inside the motor, calculate motor current, voltage, torque, and eddy current losses in permanent magnets, among other things. [Contents] ■ Purpose and usefulness ■ Application details ■ Analysis examples ■ Analysis techniques that enable solutions ■ Summary *For more details, please refer to the PDF document or feel free to contact us.

Electromagnetic field analysis (FEA) is a powerful tool for motor design and development, capable of considering magnetic saturation and dq-axis interference. Permanent magnet (PM) motors are typically driven by control circuits, and fast coupled analysis is required. At our company, we leverage the high speed and accuracy of EMSolution to create behavior models. By using behavior models based on FEA results, we can simulate behaviors equivalent to those of actual machines. Additionally, control coupled analysis often involves thousands to tens of thousands of steps, which can take several hours for direct coupled analysis with FEA. However, using behavior models reduces the computation time to just a few seconds. 【Features】 ■ Behavior model based on chain magnetic flux ■ Accurate reproduction of magnetic saturation, dq-axis interference, and slot harmonics ■ Enables fast analysis by using as motor elements in control circuit simulators like MATLAB/Simulink, or as nonlinear elements within control circuits *For more details, please refer to the PDF document or feel free to contact us.

Does dq-axis interference affect motor operation? As a standalone motor, it has characteristics that can be considered its individuality, generating torque in response to applied three-phase voltage and operating accordingly. Rather, the issue lies in how to determine the parameters of the control circuit that commands the operation. Generally, IPMSMs are controlled with d-axis and q-axis inductance and magnetic flux as constants in the dq-axis coordinate system. In cases like the D1 model, where there is a strong dependence on current and current phase angle, it may be challenging to decide which current value and current phase angle to use as control parameters. Care is needed when trying to operate efficiently or to control in a way that prevents irreversible demagnetization of the permanent magnets.

This document presents examples of electromagnetic field analysis focused on permanent magnet synchronous motors. 【No-load Analysis】 - Cogging torque waveform - Induced voltage (back electromotive force) waveform 【Load Analysis】 - Explanation of rotating magnetic field using magnetic flux line diagrams - Torque waveform at rated current - Current-torque characteristics - Current phase angle-torque characteristics 【Coupled Analysis / Parametric Analysis】 - Current waveform - Speed-torque characteristics and efficiency map We also explain what can be understood from these results and how they can be useful for design and other purposes. If you are interested in electromagnetic field analysis of permanent magnet synchronous motors, please take a look. *For more details, please refer to the PDF document or feel free to contact us.