Semi-Linear Induction Motor - Bradley University
Transcript of Semi-Linear Induction Motor - Bradley University
![Page 1: Semi-Linear Induction Motor - Bradley University](https://reader031.fdocuments.in/reader031/viewer/2022012223/61e072d24d86f14313187fb2/html5/thumbnails/1.jpg)
Semi-Linear Induction
Motor
Electrical and Computer Engineering DepartmentJacob Vangunten and Edgar Ramos
Project Advisor: Professor Steven Gutschlag4/27/17
![Page 2: Semi-Linear Induction Motor - Bradley University](https://reader031.fdocuments.in/reader031/viewer/2022012223/61e072d24d86f14313187fb2/html5/thumbnails/2.jpg)
Outline of Presentation
• Background and Project Overview
• Investigate 2016 SLIM Capstone Project
• Rotor Design
• Economic Analysis
• Results
• Conclusion2
![Page 3: Semi-Linear Induction Motor - Bradley University](https://reader031.fdocuments.in/reader031/viewer/2022012223/61e072d24d86f14313187fb2/html5/thumbnails/3.jpg)
Outline of Presentation
• Background and Project Overview
• Investigate 2016 SLIM Capstone Project
• Rotor Design
• Economic Analysis
• Results
• Conclusion3
![Page 4: Semi-Linear Induction Motor - Bradley University](https://reader031.fdocuments.in/reader031/viewer/2022012223/61e072d24d86f14313187fb2/html5/thumbnails/4.jpg)
Alternating Current Induction Machines
• Produces magnetic fields in an infinite loop of rotary motion
• Current-carrying coils create rotating magnetic field
• Powered by three phase voltages
• Stator wraps the rotor completely
4[1]
![Page 5: Semi-Linear Induction Motor - Bradley University](https://reader031.fdocuments.in/reader031/viewer/2022012223/61e072d24d86f14313187fb2/html5/thumbnails/5.jpg)
Linear Transformation
5
[2]
![Page 6: Semi-Linear Induction Motor - Bradley University](https://reader031.fdocuments.in/reader031/viewer/2022012223/61e072d24d86f14313187fb2/html5/thumbnails/6.jpg)
Applications
6
[3] [4]
![Page 7: Semi-Linear Induction Motor - Bradley University](https://reader031.fdocuments.in/reader031/viewer/2022012223/61e072d24d86f14313187fb2/html5/thumbnails/7.jpg)
Why Semi-linear?
7
• For a normal motor, the rotor is in motion
• For a linear motor, the stator is in motion
• Having a linear track would take up too much space
o Significant increase in cost
o Wouldn’t be able to reach higher speeds
o Would require a portable 3-phase voltage supply
[5]
![Page 8: Semi-Linear Induction Motor - Bradley University](https://reader031.fdocuments.in/reader031/viewer/2022012223/61e072d24d86f14313187fb2/html5/thumbnails/8.jpg)
Project Overview
• Investigate 2016 SLIM Capstone Project to identify design deficiencies
• Design a new rotor for the semi-linear induction motor
8
![Page 9: Semi-Linear Induction Motor - Bradley University](https://reader031.fdocuments.in/reader031/viewer/2022012223/61e072d24d86f14313187fb2/html5/thumbnails/9.jpg)
Outline of Presentation
• Background and Project Overview
• Investigate 2016 SLIM Capstone Project
• Rotor Design
• Economic Analysis
• Results
• Conclusion9
![Page 10: Semi-Linear Induction Motor - Bradley University](https://reader031.fdocuments.in/reader031/viewer/2022012223/61e072d24d86f14313187fb2/html5/thumbnails/10.jpg)
Prior Work
• 2016 SLIM team designed a stator for the linear induction motor
• Built stator coils
10
[6]
[7]
![Page 11: Semi-Linear Induction Motor - Bradley University](https://reader031.fdocuments.in/reader031/viewer/2022012223/61e072d24d86f14313187fb2/html5/thumbnails/11.jpg)
Prior Work
• 2016 SLIM team mounted stator and air core rotor
• Began testing of the SLIM
11
[8]
![Page 12: Semi-Linear Induction Motor - Bradley University](https://reader031.fdocuments.in/reader031/viewer/2022012223/61e072d24d86f14313187fb2/html5/thumbnails/12.jpg)
Investigation
• 2017 SLIM team performed a more complete analysis
o Confirming Coil Orientation
o Magnetic Field Mapping
o Inductance Computations
12
![Page 13: Semi-Linear Induction Motor - Bradley University](https://reader031.fdocuments.in/reader031/viewer/2022012223/61e072d24d86f14313187fb2/html5/thumbnails/13.jpg)
Coil Orientation
13
• Arranged coils to match the configuration shown in Fig [9].
o If results didn’t match, we would further investigate their orientation
o Confirming the dot notation was crucial
If the notation wasn’t correct, magnetic field supplied to the stator would be reduced [9]
![Page 14: Semi-Linear Induction Motor - Bradley University](https://reader031.fdocuments.in/reader031/viewer/2022012223/61e072d24d86f14313187fb2/html5/thumbnails/14.jpg)
Coil Orientation with Magnetic Field for One
Phase
14
B BB B
B B B B
[10]
I
![Page 15: Semi-Linear Induction Motor - Bradley University](https://reader031.fdocuments.in/reader031/viewer/2022012223/61e072d24d86f14313187fb2/html5/thumbnails/15.jpg)
Magnetic Field Mapping
15
[11] [12]
![Page 16: Semi-Linear Induction Motor - Bradley University](https://reader031.fdocuments.in/reader031/viewer/2022012223/61e072d24d86f14313187fb2/html5/thumbnails/16.jpg)
Map of magnetic field
16
[13]
![Page 17: Semi-Linear Induction Motor - Bradley University](https://reader031.fdocuments.in/reader031/viewer/2022012223/61e072d24d86f14313187fb2/html5/thumbnails/17.jpg)
Outline of Presentation
• Background and Project Overview
• Investigate 2016 SLIM Capstone Project
• Rotor Design
• Economic Analysis
• Results
• Conclusion17
![Page 18: Semi-Linear Induction Motor - Bradley University](https://reader031.fdocuments.in/reader031/viewer/2022012223/61e072d24d86f14313187fb2/html5/thumbnails/18.jpg)
Rotor Redesign
● New design based on results of magnetic analysis
● Why redesign?
○ The pre-existing rotor was initially designed to work as part of a magnetic levitation capstone project
○ The rotor didn’t produce acceptable results
○ Minimal rotation occurred18
[14]
![Page 19: Semi-Linear Induction Motor - Bradley University](https://reader031.fdocuments.in/reader031/viewer/2022012223/61e072d24d86f14313187fb2/html5/thumbnails/19.jpg)
Preliminary Rotor Designs
19
[15] [16]
![Page 20: Semi-Linear Induction Motor - Bradley University](https://reader031.fdocuments.in/reader031/viewer/2022012223/61e072d24d86f14313187fb2/html5/thumbnails/20.jpg)
Inductance Computations
(1.1)
L = Inductance [H]
𝛌 = Total linkage flux [Wb]
IL = Inductor current [A]
N = Number of turns
Φ = Flux20
![Page 21: Semi-Linear Induction Motor - Bradley University](https://reader031.fdocuments.in/reader031/viewer/2022012223/61e072d24d86f14313187fb2/html5/thumbnails/21.jpg)
Inductance Computations
𝜇r = relative permeability𝜇o= permeability of free spaceArotor= cross-sectional area of the rotor[m2]Ap1= Ap2 = cross-sectional area of the pole[m2]Aag1= Aag2 = cross-sectional area of the air gap [m2]lrotor = length of the rotor[m]lp1= lp2= length of the pole[m]lag= length of the air gap [m]lB= length of the base (stator) [m]
21
(1.9)
![Page 22: Semi-Linear Induction Motor - Bradley University](https://reader031.fdocuments.in/reader031/viewer/2022012223/61e072d24d86f14313187fb2/html5/thumbnails/22.jpg)
Inductance Computations
22
• Took measurements in Fig. [17] for VS, V1+VR=VL, V2, VM, I, V2
′, and VM′ to calculate the inductance of the coils
• Using Fig. [18], calculated inductance with equation Eq. 1.10,
VL = Inductance voltage [V] I = Coil current [A]L = Inductance [H]ZL = Inductor impedance [Ω]ƒ = Operating frequency [Hz]
(1.10)
[17]
[18]
![Page 23: Semi-Linear Induction Motor - Bradley University](https://reader031.fdocuments.in/reader031/viewer/2022012223/61e072d24d86f14313187fb2/html5/thumbnails/23.jpg)
Inductance Computations
23
• These equations proved that outputpower is directly proportional to thevalue of phase inductance
• Old rotor was resulting in really small values of inductance
![Page 24: Semi-Linear Induction Motor - Bradley University](https://reader031.fdocuments.in/reader031/viewer/2022012223/61e072d24d86f14313187fb2/html5/thumbnails/24.jpg)
Final Rotor Design
24
[19]
![Page 25: Semi-Linear Induction Motor - Bradley University](https://reader031.fdocuments.in/reader031/viewer/2022012223/61e072d24d86f14313187fb2/html5/thumbnails/25.jpg)
New Rotor manufactured by Laser Laminations
25[20]
[21]
![Page 26: Semi-Linear Induction Motor - Bradley University](https://reader031.fdocuments.in/reader031/viewer/2022012223/61e072d24d86f14313187fb2/html5/thumbnails/26.jpg)
Mounting Copper Track
26[22]
![Page 27: Semi-Linear Induction Motor - Bradley University](https://reader031.fdocuments.in/reader031/viewer/2022012223/61e072d24d86f14313187fb2/html5/thumbnails/27.jpg)
SLIM with new rotor
27[23]
![Page 28: Semi-Linear Induction Motor - Bradley University](https://reader031.fdocuments.in/reader031/viewer/2022012223/61e072d24d86f14313187fb2/html5/thumbnails/28.jpg)
Outline of Presentation
• Background and Project Overview
• Investigate 2016 SLIM Capstone Project
• Rotor Design
• Economic Analysis
• Results
• Conclusion28
![Page 29: Semi-Linear Induction Motor - Bradley University](https://reader031.fdocuments.in/reader031/viewer/2022012223/61e072d24d86f14313187fb2/html5/thumbnails/29.jpg)
Bill of Material
TABLE I: BILL OF MATERIAL
Component Supplier Price Quantity Total Price
Laminated
Rotor
Laser
Laminations
$575 1 $575
29
![Page 30: Semi-Linear Induction Motor - Bradley University](https://reader031.fdocuments.in/reader031/viewer/2022012223/61e072d24d86f14313187fb2/html5/thumbnails/30.jpg)
Outline of Presentation
• Background and Project Overview
• Investigate 2016 SLIM Capstone Project
• Rotor Design
• Economic Analysis
• Results
• Conclusion30
![Page 31: Semi-Linear Induction Motor - Bradley University](https://reader031.fdocuments.in/reader031/viewer/2022012223/61e072d24d86f14313187fb2/html5/thumbnails/31.jpg)
Results with old rotor
31
![Page 32: Semi-Linear Induction Motor - Bradley University](https://reader031.fdocuments.in/reader031/viewer/2022012223/61e072d24d86f14313187fb2/html5/thumbnails/32.jpg)
Results with new rotor
32
![Page 33: Semi-Linear Induction Motor - Bradley University](https://reader031.fdocuments.in/reader031/viewer/2022012223/61e072d24d86f14313187fb2/html5/thumbnails/33.jpg)
Outline of Presentation
• Background and Project Overview
• Investigate 2016 SLIM Capstone Project
• Rotor Design
• Economic Analysis
• Results
• Conclusion33
![Page 34: Semi-Linear Induction Motor - Bradley University](https://reader031.fdocuments.in/reader031/viewer/2022012223/61e072d24d86f14313187fb2/html5/thumbnails/34.jpg)
Conclusions
• Designing a rotor with higher inductances values resulted in an increase in rotational speed
• Further testing could identify areas that could improve results
• Future teams could implement a control scheme and reinstall the magnetic levitation system
34
![Page 35: Semi-Linear Induction Motor - Bradley University](https://reader031.fdocuments.in/reader031/viewer/2022012223/61e072d24d86f14313187fb2/html5/thumbnails/35.jpg)
Questions?
35
![Page 36: Semi-Linear Induction Motor - Bradley University](https://reader031.fdocuments.in/reader031/viewer/2022012223/61e072d24d86f14313187fb2/html5/thumbnails/36.jpg)
References
[1] Linear Induction Motor. [Photograph]. Retrieved from 2016 SLIM team Final Presentation
[2] Force Engineering. How Linear Induction Motors Work. [Photograph]. Retrieved from 2016 SLIM team Final Presentation
[3] Linear Induction Motor Rollercoaster. [Photograph]. Retrieved from Great American Thrills
[4] Japan’s Maglev Train of Tomorrow. [Photograph]. Retrieved from The Daily Conversation
[5] Normal Motor and Linear Motor. [Photograph]. Retrieved from Explain That Stuff
[6] Stator. [Photograph]. Retrieved from 2016 SLIM team final Presentation
[7] New Coil Shot 1. [Photograph]. Retrieved from 2016 SLIM team final Presentation
[8] Test Mounting. [Photograph]. Retrieved from 2016 SLIM team final Presentation
[11] and [12] Magnetic Field with Solenoid and Magnet. [Photograph]. Retrieved from Online Phys
[14] Simulated Track Shot 2. [Photograph]. Retrieved from 2016 SLIM team final Presentation
36