Partial Simulation Model Creation for Rotational Machines
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Solution Overview
Problem
Current transient finite element analysis (FEA) for electrical machines is computationally intensive and requires significant resources, leading to accuracy issues and usability challenges due to the need for manual setup of reduced models with planar boundaries, which can result in bad mesh quality and limit visualization capabilities.
Innovation Solution
The development of an auto-partial simulation model creation method using non-planar matching boundaries, which automatically generates a partial simulation model from a full model, decouples the rotating and stationary meshes, and establishes coupling relationships to solve fields without accuracy loss, enabling efficient computation and enhanced usability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If transient numerical field simulation is performed for electrical machines, then accuracy is improved by taking into account geometric complexity, high local magnetic saturation, induced eddy currents, dynamic core loss and mechanical movement, but computational time and resources are excessively increased
Solution Approach 1:
The full model is divided into multiple partial models with non-planar matching boundaries. Each partial model represents a portion of the physical object and can be simulated independently, reducing the computational domain size while maintaining accuracy through proper coupling relationships at the boundaries.
Solution Approach 2:
Instead of simulating the entire full model, only partial models covering specific regions of interest are simulated. This partial action approach maintains necessary accuracy for the regions being studied while significantly reducing computational resources required.
2Productivity
If manual setup of reduced models with planar boundaries is performed, then computational resources are reduced, but mesh quality deteriorates and usability is limited
Solution Approach 1:
Non-planar matching boundaries are used instead of traditional planar boundaries. These curved boundaries better conform to the geometry of the physical object, avoiding the mesh quality degradation that occurs with planar cuts while still enabling reduced model simulation.
Solution Approach 2:
The system automatically generates the partial models and establishes coupling relationships before simulation begins. This preliminary automated setup eliminates manual intervention, ensures proper mesh quality, and improves usability while maintaining computational efficiency.
3Loss of information
If full model simulation is performed, then comprehensive visualization of field quantities is enabled, but computational resources are excessively consumed
Solution Approach 1:
The model is segmented into partial models that can be simulated independently. Each partial model provides visualization for its specific region, and the results can be reconstructed to form a comprehensive visualization of the entire system, reducing overall computational resource requirements.
Solution Approach 2:
Results from partial model simulations are copied and reconstructed to form comprehensive visualizations of the full model. This allows full-model-level visualization without the computational cost of simulating the entire full model.
Data Source
AI summary
Data is received that comprises a full model for a physical object having a rotating part and a stationary part. The physical object includes fields coupled between the rotating part and the stationary part. A mesh is then generated for a portion of the physical object that includes a rotating mesh and a stationary mesh. Thereafter, a partial simulation model is created based on the full model and the mesh. Coupling relationships are established for the fields between the rotating mesh and the stationary mesh in the partial simulation model. The fields are then solved based on the coupling relationship of the partial simulation model. Thereafter, fields of the full model can be recovered based on the solved fields. Related apparatus, systems, techniques and articles are also described.