Fin inal Presentation: Fall 2016 Team 1716: Smart Ocean WEC - - PowerPoint PPT Presentation

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Fin inal Presentation: Fall 2016 Team 1716: Smart Ocean WEC - - PowerPoint PPT Presentation

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Fin inal Presentation: Fall 2016 Team 1716: Smart Ocean WEC Jeffrey Brennan, Christopher Stella, Peter McBride, Islam Bilalovski Faculty Advisor: Peng Zhang Graduate Advisor: Taofeek Orekan Outline Introduction Three Phase Power

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SLIDE 1

Fin inal Presentation: Fall 2016

Team 1716: Smart Ocean WEC Jeffrey Brennan, Christopher Stella, Peter McBride, Islam Bilalovski Faculty Advisor: Peng Zhang Graduate Advisor: Taofeek Orekan

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SLIDE 2

Outline

  • Introduction
  • Three Phase Power
  • Power Electronics
  • Added Control
  • Physical Testing
  • Materials/Budget
  • Timeline
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SLIDE 3

Introduction

  • New form of renewable energy
  • Sea waves have highest

energy density (30 kW/m2) compared to other renewable sources

  • Abundant supply
  • 70% of the world is ocean
  • Major cities located near water
  • Charge AUV’s

Stationary view of point absorber

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SLIDE 4

Working Principles

  • Faraday’s Law
  • Induced current from magnetic field

[http://www.livescience.com/53509-faradays-law-induction.html]

Cross sectional view of linear generator

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SLIDE 5

Visual Representation

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SLIDE 6

System Overview

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SLIDE 7

Circuit Overview

  • Original proposed circuit
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SLIDE 8

Outline

  • Introduction
  • Three Phase Power
  • Power Electronics
  • Added Control
  • Physical Testing
  • Materials/Budget
  • Timeline
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SLIDE 9

Previous Design

  • Lack of control
  • Small range of motion
  • Rotor is rubber
  • Rubber is an insulator
  • Single phase

Coil 3.0 on test rig

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SLIDE 10

3-Phase Generation

  • Linearizing a rotational generator
  • Bnet = [1.5Bm(sin(wt))] - [1.5Bm(cos(wt))]
  • Phase sequence as follows: a, b’, c, a’, b, c’

[1] [2]

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SLIDE 11

3-Phase Generation: Rotor

  • Three Phase Configuration
  • Metal Core
  • Vertically Aligned Coils
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SLIDE 12

3-Phase Generation: General Formulae

[3] [3]

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SLIDE 13

3-Phase Generation: Power Formulae

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SLIDE 14

3 Phase: Phase Voltage

  • Expected Voltage Generation:
  • Magnetic Field Intensity: 11380 (A/m)
  • Flux Density: .0143 T
  • Pull Force: 218.5 lb.
  • Distance from magnets: 4”
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SLIDE 15

Outline

  • Introduction
  • Three Phase Power
  • Power Electronics
  • Added Control
  • Physical Testing
  • Materials/Budget
  • Timeline
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SLIDE 16

3-Phase Rectifier

  • Full Bridge Rectifier
  • Converts generated AC to DC
  • Used to feed buck boost circuit
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SLIDE 17

Power Electronics Reconfiguration

  • Buck boost
  • Reduce input voltage to usable levels
  • Boost low voltages to 12V
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SLIDE 18

Buck Boost: Design

  • Continuous Conduction Mode (CCM) - current in

the inductor never goes to zero between switching cycles R = 25 ohms L = 1.1 uH C = 0.667 uF

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SLIDE 19

Buck Boost: MATLAB Simulation

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SLIDE 20

Outline

  • Introduction
  • Three Phase Power
  • Power Electronics
  • Added Control
  • Physical Testing
  • Materials/Budget
  • Timeline
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SLIDE 21

Added Control

  • Microcontroller
  • Atmega 168PA-PU
  • PI Controller
  • 12V reference for corrections
  • Bluetooth Receiver
  • ZS-040

if (Vout >= 12.0) { error = Vout-12.0; } else { error = 12.0-Vout; } printString(error);

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SLIDE 22

Hazard Protection

  • Severe Weather Setting
  • Waterproofing

[http://fineartamerica.com/featured/inner-glow-of-ocean-waves-anne-macdonald.html]

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SLIDE 23

Outline

  • Introduction
  • Three Phase Power
  • Power Electronics
  • Added Control
  • Physical Testing
  • Materials/Budget
  • Timeline
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SLIDE 24

Physical Testing

  • Test Rig Rebuilt: 12/2/16
  • Results inconsistent with

prior data

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SLIDE 25

Outline

  • Introduction
  • Three Phase Power
  • Power Electronics
  • Added Control
  • Physical Testing
  • Materials/Budget
  • Timeline
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SLIDE 26

Custom Magnets

  • 4” Diameter
  • .5” Height
  • Diametric Poles
  • 218.5 lb. Pull Force

Axial Diametric

[http://www.kjmagnetics.com/contest.asp] [https://www.kjmagnetics.com/proddetail.asp?prod=DZ08-N52]

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SLIDE 27

New Batteries

  • 14.8V – Li Ion
  • 5.2 Ah
  • .88 lbs.
  • $74.99

[http://www.all-battery.com/Li-Ion18650148V5200mAhBatteryPackwithPCB.aspx]

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SLIDE 28

Budget

Item Quantity Cost ($) Total ($) PCB 3 50 150 Li Battery 2 75.00 150.00 Magnets 4 300.00 300.00 .67 uH Capacitor 1 .40 .40 1.1 uH Inductor 1 1.10 1.10 25 Ohm Resistor 1 .50 .50 Schottky Diode 4 .40 1.60 MOSFET 1 1.60 1.60 Rotor 1 200.00 200.00 Inherited X X X Total Cost $805.20

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SLIDE 29

Outline

  • Introduction
  • Three Phase Power
  • Power Electronics
  • Added Control
  • Physical Testing
  • Materials/Budget
  • Timeline
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SLIDE 30

Timeline

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SLIDE 31

Works Cited

[1] Electric Machinery Fundamentals Fifth Edition [2] https://en.wikipedia.org/wiki/Linear_motor [3]http://ir.library.oregonstate.edu/xmlui/bitstream/handle/1957/5921/Novel+Control+of+a+Permanent+Magnet+Linear+Gener ator+for+Ocean+Wave+Energy+Applications.pdf;jsessionid=334C946642E6CD3DA1B41D55CE4691FE?sequence=1

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SLIDE 32

Questions?