Motors and the Current State of Motion Technology

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There are a number of newer motor technologies that have emerged over the past few years. These technologies generally fall into three classes; high torque density motors, high efficiency type motors, and high power density motors. Different configurations help all three motor classes reach their application targets.
This webinar will cover these motor technologies, their performance characteristics, and target applications. It will also cover new power devices that will enhance inverter and drive performance and reduce device losses, leading to more powerful and efficient motion control systems.
The presenter will be Dan Jones from Incremotion Associates, an industry expert with over 50 years of experience in the motor and motion control world. Dan has a wealth of knowledge and experience, having served in various capacities such as chief engineer and staff engineer with numerous companies over the years.
This is one presentation you won’t want to miss.

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Motors and the Current State of Motion Technology

  1. 1. Motors and the Current State of Motion Technology
  2. 2. Before We Start  This webinar will be available afterwards at designworldonline.com & email  Q&A at the end of the presentation  Hashtag for this webinar: #DWwebinar
  3. 3. Moderator Presenter Miles Budimir Dan Jones Design World Incremotion Associates
  4. 4. Motors and the Current State of Motion Technology Dan Jones Incremotion Associates
  5. 5. Newly Emerging Technology “Motion Control” Combination of: New Motors New Power Devices New Software Tools New Controller IC’s New Feedback Devices 6
  6. 6.  Most motor technologies were developed as theoretical types at least 20 years before they began to move into production. 7
  7. 7.  Some motor technologies awaited the need of new applications and/or new drive and control developments. 8
  8. 8.  The emergence of new needs and new applications drives the development of new motor technologies. 9
  9. 9. New Needs  Energy savings (higher motor efficiencies)  Electric replacing pneumatic and hydraulic applications  Weight savings  More torque (torque-weight density)  More power (power density) 10
  10. 10. New Applications  Aircraft pumps and actuators (electric)  Hybrid and electric vehicles  Handheld portable electric tools  Battlefield and household robots  Medical diagnostic machines (MRI, PET, CAT, etc.)  Medical powered prosthetics (arms, wrists, ankles, knees, etc.) 11
  11. 11. Motors in Controlled Motion  There are 3 major classes of controlled motion: 1. Constant speed 2. Variable speed 3. Variable position 12
  12. 12. Various Motor Types – CD-adapco (SPEED) 13
  13. 13. Basic Motor Configurations  Radial air gap (induction, PM brushless & SR)  Axial air gap or axial flux  Transverse flux 14
  14. 14. 15
  15. 15. Axial Air Gap Motor 16
  16. 16. Synchronous Reluctance Motor 17
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  18. 18. Axial Flux Motors – Version 1  Yasa Axial Flux – High Power Density Motor Winner of the Drayson Racing FIA World Land Speed Record at 204 mph 19
  19. 19. Axial Flux Motor 20
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  22. 22. Applications (Axial Flux)      In hub motors for electric bikes, electric scooters PM generators (direct drive) Rotary industrial tables Robots (waist and elbow) Automotive starter/generators 23
  23. 23. Axial Flux Motors  Advantages o High power density o Very high power efficiency o Can be fluid cooled  Disadvantages o Very high rotor inertia o Complex lamination structure o High RE magnet weight 24
  24. 24. The i-Motor Technology – Japan (Ver. 2)  Controlling the PM Motor’s Magnetic field by using magnetic flux from an Exciter.  Focusing on the motors speed to achieve the widest speed range possible. 25
  25. 25. i-Motor Performance Features  Field changeable magnet excitation motor  Changes in magnetization results in variable field strength that leads to a wide range of motor shaft speeds  Smart control techniques can lead to higher power efficiencies over a wide speed range 26
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  29. 29. i-Motor Application Opportunities A wide range of variable speed applications are achievable that include:           Electric vehicles Pumps Fans Compressors Textile machines Spindles in machine tools Food equipment (bottling, labeling, handling) Oil, chemical and gas processing Pulp and paper processing Many others 30
  30. 30. i-Motor Axial Flux Motor  Advantages o o o o  Use ferrite magnets Widest speed range Lowest cost Lower inertia with gearbox decouple Disadvantages o Needs gearbox o Pancake shape limits drop in replacements 31
  31. 31. ABB IE4 Efficiency Synchronous Reluctance Motor 32
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  36. 36. Synchronous Reluctance Motor  Advantages o o o o o o  No magnets Uses conventional inverter drives Higher torque density than induction motors Higher power factor Wide constant power vs. speed range Brushless Disadvantages o Complicated rotor construction o Non-linear torque vs. current o Complicated control algorithm 37
  37. 37. Transverse Flux Motor History  First paper by Professor Weh in 1988.  Only academia with very large computers could simulate the magnetic action of this motor.  PC based motor simulation programs did not become available until the mid-1990’s and they were not initially very friendly.  It is a 3 phase brushless PM motor type. 38
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  44. 44. Transverse Flux Motors  Advantages o o o o  Highest torque – weight density Highest continuous torque per volume Low internal losses Simplest winding (coil) Disadvantages o Limited speed (< 1000 rpm) o Complicated construction 45
  45. 45. Conclusions  New motor developments continue  Development driven by new applications and needs  Higher power density motors now appearing  New motors in development for ever higher power efficiencies  More new motor developments to come 46
  46. 46. Questions? Design World Miles Budimir mbudimir@wtwhmedia.com Phone: 440.234.4531 Twitter: @DW_Motion Incremotion Associates Dan Jones djones9352@aol.com Phone: 805.496.2621
  47. 47. Thank You  This webinar will be available at designworldonline.com & email  Tweet with hashtag #DWwebinar  Connect with  Discuss this on EngineeringExchange.com

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