JMAG-Designer 25: Motor Design & Optimization Software

JMAG-Designer Ver25.0 is a major release of the electromagnetic field simulation software for electric motor, generator, and actuator design. Released in February 2026 , it focuses on automating design via enhanced geometry constraints, surrogate model optimization, and advanced motor evaluation features.

Key Features

Design Automation & Geometry Control

  • Automatic Dimensional Constraints: Expanded to complex stator and rotor shapes, moving automatic constraint application from conceptual to detailed design phases .

  • Constraint Highlighting: Visualization guidelines help identify and resolve under-constrained geometries .

  • Dependent Parameter Constraints: Set optimization constraints on dimensions determined by design variables (e.g., minimum bridge width in IPM motors) to maintain structural integrity .

Surrogate Model-Driven Optimization

  • Geometry Check Surrogate Models: New model accelerates optimization by assessing shape validity through a surrogate model instead of CAD-based verification .

  • Discrete Value Optimization: Supports optimization of discrete values for dimensions and materials, expanding the scope of surrogate model-assisted calculations .

Advanced Motor & NVH Evaluation

  • 2D Fourier Transform: Analyze time and spatial order components of excitation sources for noise and vibration (NVH) studies .

  • JMAG-Express Enhancements: Customizable display of design variables and response values; expanded evaluation items including current phase, torque, and voltage relationships; and new thermal design scenarios for axial flux motors .

High-Fidelity Physics

  • Halbach Array Definition: Streamlined modeling of Halbach array permanent magnets with divisions as design variables .

  • Superconductor Modeling: Enhanced calculation functions with angular dependence of critical current density .