EM USER DAYS 2019 Innovative motors for electric mobility: axial - - PowerPoint PPT Presentation

▶
em user days 2019
SMART_READER_LITE
LIVE PREVIEW

EM USER DAYS 2019 Innovative motors for electric mobility: axial - - PowerPoint PPT Presentation

Dec 19, 2022 101 likes •325 views

EM USER DAYS 2019 Innovative motors for electric mobility: axial flux for high torque density and synchronous reluctance for rare earth free solutions Luigi Rizzi Technical Director at SPIN www.spinmag.it 2019 EM USER DAYS October 22nd

slide-1
SLIDE 1

EM USER DAYS 2019

2019 EM USER DAYS October 22nd — 23rd, 2019 | Stadthalle Sindelfingen, GERMANY

Innovative motors for electric mobility: axial flux for high torque density and synchronous reluctance for rare earth free solutions Luigi Rizzi Technical Director at SPIN www.spinmag.it

slide-2
SLIDE 2

PRICE OF CARS

Ford Model T - 1925

slide-3
SLIDE 3

AVAILABILITY OF CHARGING STATIONS

slide-4
SLIDE 4

AXIAL FLUX MOTORS

Michael Faraday

slide-5
SLIDE 5

AXIAL FLUX MOTORS

Thomas Davenport

slide-6
SLIDE 6

AXIAL FLUX MOTORS

slide-7
SLIDE 7

AXIAL FLUX MOTORS

slide-8
SLIDE 8

AXIAL FLUX MOTORS

  • Higher power density than Radial-Flux motors
  • Better ventilation and cooling
  • Planar airgap best fits the different applications
  • Ideal to design modular motors for different power and torque

requirements

  • Output power proportional to the square of the outer diameter

𝑈𝑏𝑦𝑗𝑏𝑚 ∝ 𝑠3 𝑈𝑠𝑏𝑒𝑗𝑏𝑚 ∝ 𝑠2

slide-9
SLIDE 9

COMPRESSORS FOR REFRIGERATORS

slide-10
SLIDE 10

COMPRESSORS FOR REFRIGERATORS

SPEED Joule Losses Iron Losses TORQUE TORQUE RIPPLE Output Power Efficiency [RPM] [W] [W] [Nm] pk-pk [%] [W] 1400 1,06 1,31 0,181 5,5 26,54 91,8 2400 1,09 2,61 0,182 5,4 45,65 92,5 2400 2,12 2,67 0,258 3,9 64,77 93,1 4000 5,28 5,75 0,409 2,5 171,4 94,0

PEAK EFFICIENCY AXIAL FLUX

slide-11
SLIDE 11

MULTIPHASE TORQUE MOTOR

SPEED Joule Losses Iron Losses Magnet losses TORQUE Output Power [RPM] [kW] [kW] [kW] [Nm] [kW] 1400 14.9 0.4 2.3 840 123.1

EDDY CURRENT LOSSES IN MAGNETS

slide-12
SLIDE 12

HYDRAULIC PUMP

SPEED Joule Losses Iron Losses Magnet losses TORQU E Output Power [RPM] [kW] [kW] [kW] [Nm] [kW] 2500 14.9 0.4 2.3 90 23.5

SPEED Torque Power Torque density Power density [RPM] [Nm] [kW] [Nm/kg] [kW/kg] 2500 90 23.5 6.6 1.7

TORQUE DENSITY

slide-13
SLIDE 13

SYNC-REL MOTORS

CONFIDENTIAL

slide-14
SLIDE 14

SYNC-REL MOTORS

EFFECT OF ROTOR GEOMETRY ON TORQUE RIPPLE

A-A-A-A generates the red curve B-B-B-B generates the blue curve

A-B-A-B TORQUE RIPPLE

CONFIDENTIAL

slide-15
SLIDE 15

SYNC-REL MOTORS

IDENTIFICATION OF OPTIMIZATION PARAMETERS

The optimization

  • bjectives
  • MIN torque ripple
  • MAX mean torque

CONFIDENTIAL

slide-16
SLIDE 16

SYNC-REL MOTORS

RESULT OF OPTIMIZATION ON TORQUE RIPPLE SYMMETRIC ASYMMETRIC

slide-17
SLIDE 17

SYNC-REL MOTORS

RADIAL FORCES ON ASYMMETRIC CONFIGURATION UMBALANCED PULL @ 0.05mm MISALIGNMENT 124.4 N

CONFIDENTIAL

slide-18
SLIDE 18

SYNC-REL MOTORS

RADIAL FORCES ON ASYMMETRIC CONFIGURATION UMBALANCED PULL @ 0.05mm MISALIGNMENT 124.4 N

slide-19
SLIDE 19

SYNC-REL MOTORS

MOTOR PERFORMANCE SUMMARY

SPEED RANGE S1 TORQUE S1 POWER Power density Torque Density Torque Ripple [RPM] [Nm] [kW] [kW/kg] [Nm/kg] [%] 10.000 200 64 1.0 3.1 2.3

POWER DENSITY IN CONTINUOUS OPERATION FINAL TORQUE RIPPLE

slide-20
SLIDE 20

CONCLUSION

ANALYSIS Electrical / Thermal / Mechanical / System Prototyping & Testing

slide-21
SLIDE 21