Permanent Magnet Motor Modeling Kaila Krieser, EE Dan Montgomery, EE Craig Christofferson, EE Mark Wisted, EE Dr. Mani Mina, Advisor Dr. David Jiles, Advisor Dave Sowders, Kansas City Plant Client

Problem Objective  The team will select, use and assess an electromagnetic modeling software tool to simulate Permanent Magnet Motor operation in variable magnet and environmental configurations.  Key Steps: 1. Selection of Tool 2. Selection of Model 3. Modeling Execution 4. Experimental Validation

Conceptual Sketch Modeling Software Tool Evaluation Industry Research Design Motors Magnet Material Experiments Other Electromagnetic Modeling Problems

System Block Diagram Research PMM Function PMM Modeling Fundamentals Performance Characteristics Magnetic Material Characteristics Selection Software PMM CAD File Simulation FEMM Opera-2D ANSYS EM MagNet Software Evaluation Accuracy (Stretch Goal: Physical Testing Cost Usability Magnet Materials Performance Characteristics

Functional Requirements  Modeling Tool for Permanent Magnet Motor  Various modeling tools will be evaluated for accuracy, available measurement parameters, usability and cost.  Motor Model Selection  The selection of the motor model will be based on complexity and obtainable matching CAD files  Motor Simulation  Following the selection of the tool and the model, the simulation of the chosen motor will be executed with the software.  Stretch Goal: Motor Evaluation and Test Results  In order to validate the modeling software’s efficiency, torque, and power output data for a permanent magnet motor, the motor must be tested in a real-world situation.

Constraint Considerations  Matching CAD File and Software  Modeling Software Tool Training  Cost  Time  Stretch Goal: Matching Motor and CAD File

Deliverables  Software Evaluation Report  Software Overview  Software Usability  Demonstration of CAD simulation  Evaluation of PMM testing  Validation of simulation results

Technology Consideration  Modeling Tool  Cost and Availability  Usability and Training Resources  Measurement Parameters  Magnet Material Library  Stretch Goal: Simulation Environmental Dependencies  PMM Model  Cost and Availability  Compatibility to Modeling Software Tool  Stretch Goal: Physical PMM  Cost  Size and Complexity  Matching Motor and CAD File

Risks & Mitigation  Change in Client’s Expectations  Lack of Expertise

Cost Estimate

Market Survey  A comparative analysis from a prospective engineering graduate is not readily available to the client, software companies, and research community.  The research and development style of this project produces intellectual deliverables. As such, similar projects are uncommon.

Research  PMM Function  Components  Rotor  Stator  Air gap  Brushless DC  AC Motor Operation Stator Rotor Permanent Magnets Air Gap Stator Windings

Research  Modeling Fundamentals  Finite Element Analysis  Polygonal Mesh Modeling  2D versus 3D Analysis  Solvers  Static,  Transient  Time Harmonic

Research  Performance Characteristics  Magnetomotive Force  Reluctance  Permeance  Flux Linkage  Cogging Torque  Output Torque  Efficiency and Loss  Electrical or Copper Losses  Core Losses  Mechanical Losses  Stray Losses

Research  Magnet Material Characteristics  Permeability  Retentivity  Hysteresis  Maximum Energy Product  Remanence or Residual Magnetizaion  Coercivity  Curie Temperature

Research  Magnetic Materials  Ferromagnets  Alnico  Ceramic  Samarium Cobalt  Neodymium-Iron-Boron (NdFeB)  Comparison of Materials

Modeling Software Tools  Finite Element Method Magnetics (FEMM)  Simple, free software  Cobham Opera-2D  Advanced, free 30 day trial  ANSYS Electromagnetics Solutions  Advanced, department provided  Infolytica MagNet  Dr. Jiles (Department Chair) recommended, Dr. Jiles provided

Evaluation Criteria  Cost  Usability  Performance Characteristics Variability  Magnetic Material Variability  Environmental Variability  Interpretation of Simulation Results  Output Data Accuracy

Stretch Goal: Physical Testing  Magnetomotive Force  Gaussmeter and Fluxmeter  Flux Linkage  Back EMF  Cogging Torque  Specific experimental apparatus  Output Torque  Dynamometer  Efficiency  Electrical power in versus mechanical power out

Current Project Status  Modeling Software Tool Status  FEMM Modeling  Research Evaluation Motor Options  Project Contacts  Dr. David Jiles  Dr. Faris Al-naemi  Dr. Mani Mina  David M. Sowders  Dr. William McCallum

Project Milestones & Schedule

Member Contributions  Kaila Krieser  Weekly Reports  Magnetic Material Research  Mark Wisted  FEMM Modeling  Software Research  Website  Dan Montgomery  Communicator  Motor Research  Craig Christofferson  Contacted Software Companies  FEMM Modeling

Future Plan  Remaining questions  Narrow modeling software tool options for client by middle of February  Acquire evaluation motor by the beginning of February with magnetic variation  Stretch Goal: Start physical testing by March

Questions?