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.

1. Motors and the Current State of
Motion Technology

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. Moderator
Presenter
Miles Budimir
Dan Jones
Design World
Incremotion Associates

4. Motors and the Current
State of Motion Technology
Dan Jones
Incremotion Associates

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. 
Most motor technologies were developed as theoretical
types at least 20 years before they began to move into
production.
7

7. 
Some motor technologies awaited the need of new
applications and/or new drive and control developments.
8

8. 
The emergence of new needs and new applications drives
the development of new motor technologies.
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. 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. Motors in Controlled Motion

There are 3 major classes of controlled motion:
1. Constant speed
2. Variable speed
3. Variable position
12

12. Various Motor Types – CD-adapco (SPEED)
13

13. Basic Motor Configurations

Radial air gap (induction, PM brushless & SR)

Axial air gap or axial flux

Transverse flux
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14. 15

15. Axial Air Gap Motor
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16. Synchronous Reluctance Motor
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17. 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. Axial Flux Motor
20

20. 21

21. 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. 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. 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. 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
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26. 27

27. 28

28. 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. 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. ABB IE4 Efficiency Synchronous Reluctance Motor
32

32. 33

33. 34

34. 35

35. 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. 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

38. 39

39. 40

40. 41

41. 42

42. 43

43. 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. 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. 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. Thank You
 This webinar will be available at designworldonline.com & email
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