LINEAR AR INDUCTION TION MOTOR OR Electrical and Computer - - PowerPoint PPT Presentation

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LINEAR AR INDUCTION TION MOTOR OR Electrical and Computer - - PowerPoint PPT Presentation

Apr 22, 2023 321 likes •830 views

1 LINEAR AR INDUCTION TION MOTOR OR Electrical and Computer Engineering Tyler Berchtold, Mason Biernat and Tim Zastawny Project Advisor: Professor Steven Gutschlag 11/19/2015 2 Outline of Presentation Project Overview Tyler

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SLIDE 1

LINEAR AR INDUCTION TION MOTOR OR

Electrical and Computer Engineering

Tyler Berchtold, Mason Biernat and Tim Zastawny Project Advisor: Professor Steven Gutschlag 11/19/2015

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SLIDE 2

Outline of Presentation

  • Project Overview
  • Tyler
  • Mason
  • Tim
  • Conclusion

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SLIDE 3

Outline of Presentation

  • Project Overview
  • Tyler
  • Mason
  • Tim
  • Conclusion

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SLIDE 4

Project Overview

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SLIDE 5

Linear Induction Motor Background

  • Alternating Current electric motor
  • Powered by a multiple phase voltage scheme
  • Force and motion are produced by a linearly

moving magnetic field

  • Used to turn large diameter wheels

5 [1]

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SLIDE 6

Alternating Current Induction Machines

  • Most common AC machine in industry
  • Produces magnetic fields in an infinite loop of

rotary motion

  • Stator wrapped around rotor

6 [2]

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SLIDE 7

Rotary to Linear

7 [3]

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SLIDE 8

Subsystem Block Diagram

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SLIDE 9

Personal Motivation

  • To graduate!

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SLIDE 10

Gantt Chart Current Project

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SLIDE 11

Outline of Presentation

  • Project Overview
  • Tyler
  • Mason
  • Tim
  • Conclusion

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SLIDE 12

Tyler

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SLIDE 13

Progress

  • Research
  • Rotary to linear conversion models
  • Pole arrangements
  • Overall Microcontroller System
  • Tachometer
  • Variable Frequency Drive (VFD)
  • Liquid Crystal Display (LCD)

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SLIDE 14

Tachometer Subsystem

  • Main Components
  • Photo-interruptor
  • Transparent Disk with Notches
  • External Interrupt
  • Counts pulses
  • 4 pulses per rotation
  • 250 ms interrupt service routine

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SLIDE 15

VFD Subsystem

  • Main Components
  • VFD
  • 0-10V signal correlates to 0-120 Hz
  • A/D Converter
  • D/A Converter
  • A/D Converter
  • Onboard the ATmega128
  • 250 ms interrupt service routine
  • Compares input voltages

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SLIDE 16

LCD Subsystem

  • LCD Displayed Values
  • RPM
  • Calculation to obtain RPM
  • Convert to string
  • Input string to LCD
  • Output frequency
  • Calculation to obtain VFD output frequency
  • Convert to string
  • Input string to LCD

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SLIDE 17

Gantt Chart

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SLIDE 18

Upcoming Work

  • Implementation of Stator
  • Full group effort
  • Microcontroller System
  • Keypad
  • Display input keypad value on LCD
  • Input displayed keypad value to D/A converter
  • D/A Converter
  • Input 0-10 V reference signal to VFD
  • Will change output frequency of VFD

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SLIDE 19

Outline of Presentation

  • Project Overview
  • Tyler
  • Mason
  • Tim
  • Conclusion

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SLIDE 20

Mason

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SLIDE 21

Progress

  • Research
  • Pole Arrangements
  • Rotary to Linear Speed
  • Variable Frequency Drive
  • Turns per Phase
  • Calculations
  • Rotary to Linear Speed
  • Ideal Linear Synchronous Speed and Frequency
  • Coil Windings and Turns per Phase
  • Coil Inductance

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SLIDE 22

Work Completed

22 (1)

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SLIDE 23

Work Completed

23 (2)

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SLIDE 24

Work Completed

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4-Pole Machine Using 16 AWG:

  • 45 Wraps fit on a 0.0762 m

Tooth

  • 851 Turns per Phase
  • 213 Wraps per Stator Tooth
  • 5 Coil Wrapping Layers per

Stator Tooth

  • Outer Diameter of 0.0362 m
  • Coil Inductance of 1.5867 µH

2-Pole Machine Using 16 AWG:

  • 45 Wraps fit on a 0.0762 m

Tooth

  • 1703 Turns per Phase
  • 852 Wraps per Stator Tooth
  • 19 Coil Wrapping Layers per

Stator Tooth

  • Outer Diameter of 0.0601 m
  • Coil Inductance of 15.4940 µH
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SLIDE 25

Work Completed

25 (3) (4) (5)

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SLIDE 26

Work Completed

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10 20 30 40 50 60 70 80 90 100 110 120 5 10 15 20 25 30 35 40 45

Ideal Linear Synchronous Speed vs. Frequency Frequency [Hz] Output Synchronous Speed [m/s]

2-Pole Machine (stator length 0.3048m) 4-Pole Machine (stator length 0.3048m)

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SLIDE 27

Work Completed

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10 20 30 40 50 60 70 80 90 100 110 120 5 10 15 20 25 30 35 40 45

Ideal Linear Synchronous Speed vs. Frequency Frequency [Hz] Output Synchronous Speed [m/s]

2-Pole Machine (stator length 0.3048m) 4-Pole Machine (stator length 0.4542m)

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SLIDE 28

Gantt Chart

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SLIDE 29

Outline of Presentation

  • Project Overview
  • Tyler
  • Mason
  • Tim
  • Conclusion

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SLIDE 30

Tim

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SLIDE 31

Progress

  • Pole Arrangement
  • Salient
  • Non Salient
  • Design Stator
  • Manufacturing
  • Cost
  • Time

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SLIDE 32

Pole Arrangements

  • Understanding poles effect on the system
  • Number
  • Will vary overall speed
  • Will vary output force
  • Salient
  • Single coil per tooth
  • Non-salient or Distributed
  • Coils distributed around multiple teeth

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SLIDE 33

Salient and Non-Salient

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A B C A B C A B C A B C

Salient Non-Salient

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SLIDE 34

Design of Stator

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SLIDE 35

Design of Stator

  • Material of LIM
  • Laminated Steel
  • Length of teeth
  • Allow for coil windings to fit

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SLIDE 36

Design of Stator

  • Slot and Teeth Ratio
  • Narrow Teeth
  • Generates more force
  • Better Efficiency
  • Better Power Factor
  • Tooth Saturation

36 25/75 50/50 75/25

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SLIDE 37

Manufacturing

  • Laser Laminations
  • 1 Week Constructing
  • Shipping
  • First Lamination most expensive part of

manufacturing

  • Original 2 Pole Machine cost estimate $250
  • New 4 Pole Machine cost raised to $450

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SLIDE 38

Gantt Chart

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SLIDE 39

Upcoming Work

  • Purchasing Stator
  • Winding the coils

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SLIDE 40

Outline of Presentation

  • Project Overview
  • Tyler
  • Mason
  • Tim
  • Conclusion

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SLIDE 41

Conclusion

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SLIDE 42

Conclusion

  • Work Done
  • Pole Arrangement
  • Coil Windings
  • Teeth/ Slot
  • Design
  • Future Work
  • Purchasing
  • Construction
  • Implementation
  • Testing

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SLIDE 43

Questions

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SLIDE 44

References

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SLIDE 45

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VFD A/D Converter Calculation Block:

(Converter Value)*(10/5) [V]*(120/10) [Hz/V]

LCD Float to String

0-5 V to Binary 0-5 V to 0-120 Hz String input to LCD

Voltage Divider: (½)*(Voltage)

0-10 V 0-5 V

Photo-Interruptor Calculation Block:

(Count)*(4) [Notches/R]*(1/.25) [s/cycle]*(60 s/min)

Float to String LCD

0-5 V to Binary String input to LCD

Interrupt Pulse Counter

Pulses Pulses per Interrupt Value

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SLIDE 46

Pole Pitch

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τ

A B C A B C

Pole Pitch = 0.1668m

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SLIDE 47

Coil Pitch

47 http://www.davidsonsales.com/docs_pdf/Coil Pitch.pdf

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SLIDE 48

Master Gantt Chart

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SLIDE 49

References

[1] A. Needham. A maglev train coming out of the Pudong International

  • Airport. [Photograph]. Retrieved from

https://en.wikipedia.org/wiki/Maglev#/media/File:A_maglev_train_co ming_out,_Pudong_International_Airport,_Shanghai.jpg [2] Linear Induction Motor. [Photograph]. Retrieved from http://www.mpoweruk.com/motorsac.htm [3] Force Engineering. How Linear Induction Motors Work. [Photograph]. Retrieved from http://www.force.co.uk/linear-motors/how-linear.php

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