Randall Lay-EE Table of Contents 1. 1. Pr Proje oject ct Ov - - PowerPoint PPT Presentation

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Group #26 Andrea Solano-EE Juan Valera-EE Manuel Keesee-EE Randall Lay-EE Table of Contents 1. 1. Pr Proje oject ct Ov Over ervie view 2. 2. Revis vision ion A/B A/B 3. 3. Fin Final al Revis vision ion 4. 4. Time Time Lin

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SLIDE 1

Group #26 Andrea Solano-EE Juan Valera-EE Manuel Keesee-EE Randall Lay-EE

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SLIDE 2

Table of Contents

1.

  • 1. Pr

Proje

  • ject

ct Ov Over ervie view 2.

  • 2. Revis

vision ion A/B A/B 3.

  • 3. Fin

Final al Revis vision ion 4.

  • 4. Time

Time Lin Line e of

  • f Pr

Proje

  • ject

ct 5.

  • 5. Gr

Grou

  • up

p Res espo pons nsib ibili ilities ties 6.

  • 6. Fina

Financ ncials ials

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SLIDE 3

Project Motivation: South Africa Pomolong Township

  • Supply renewable

energy to a small community center located in the Pomolong Township in South Africa

  • Impact the lives of many

by powering a essential electronics such as computer, a projector, lights, and other devices use for educational purposes

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SLIDE 4

Item Watts Quantity Est. Hours Total Watt hours Total Watts Lights 15 2 5 150 30 Computer charger 65 1 5 325 65 Projector/ TV 300 1 5 1500 300 Maximum Power 395 Watts Energy in a single day: ~2 KW∙hrs

Pomolong Township Community Center Power Needs

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SLIDE 5
  • Charge a 24V battery bank safely and reliably
  • Deliver necessary power to the user when

demanded

  • Deliver necessary energy types to the user when

demanded (i.e. USB, American standard (110V), and European standard (220V))

  • Overall robust and reliable energy storage system

Goals & Objectives

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SLIDE 6
  • Input Source ~ 24V – 30V (DC)
  • System Power Output ~ 2000W

– AC Voltage: 110Vrms & 220Vrms – DC Voltage: 5Vdc (USB port)

  • 24V Battery Bank
  • Utilization of wind and Solar energy sources

Design Specifications

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SLIDE 7

Table of Contents

1.

  • 1. Pr

Proje

  • ject

ct Ov Over ervie view 2.

  • 2. Revis

vision ion A/B A/B 3.

  • 3. Fin

Final al Revis vision ion 4.

  • 4. Time

Time Lin Line e of

  • f Pr

Proje

  • ject

ct 5.

  • 5. Gr

Grou

  • up

p Res espo pons nsib ibili ilities ties 6.

  • 6. Fin

Finan ancia cials ls

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SLIDE 8

Components Overview Revision A

E

MPPT Charge Controller

Inverter

Housekeeping Controller

Wind Turbine PV Panels Rectifier Battery Bank Transformer

Dump Load PM Bypass Circuit

USB

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SLIDE 9

Sources provided by the mechanical Engineers:

  • Solar tracking

team

  • Wind tower team

Renewable Energy Sources

Lessons Learned:

  • Communication is key
  • Larger amount of people
  • n a project can add

more problems than solve

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SLIDE 10

Components Overview Revision A

E

MPPT Charge Controller

Inverter

Housekeeping Controller

Wind Turbine PV Panels Rectifier Battery Bank Transformer

Dump Load PM Bypass Circuit

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SLIDE 11

Charge Controller

Buck & Boost Converter

Buck Mode Boost Mode

CSD18532KCS MOSFET 60-V, N-Channel Power MOSFETs

Sch has a 12V system needs to be 24V

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SLIDE 12

Lessons Learned:

  • Modes of a MOSFET
  • Cutoff VGS<Vth
  • Linear Region VGS>Vth and VDS < VGS – Vth
  • Saturation VGS>Vth and VDS >= VGS – Vth
  • Ringing in MOSFET
  • High Frequency
  • Low Current
  • Robust and Forgiving

Charge controller Buck & Boost Converter

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SLIDE 13

Charge Controller

H- Bridge Driver: SM72295

Lessons Learned:

  • Limited ability to sink

current i.e. lower the external gate resistor value

Parameter SM72295 Switching frequency 220kHz Analog Supply Voltage 10 V Digital Supply Voltage 5 V Peak Output Current 3 A Operating Temperature

  • 40°C to 125°C

Other Features Current Sense Amplifiers

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SLIDE 14

Charge Controller

SM72442

Lessons Learned:

  • Sensitive to electrostatic

shock and/or any other voltage than the required 5V

  • I2C communication (for this

device) requires recurring start bit not stop bit then start bit Parameter SM72442 Analog Supply Voltage

  • .3V to 6V

Digital Supply Voltage

  • .3 to 6V max

Input Current at any pin 10mA Package Input Current 20mA Operating Temperature

  • 40°C to 105°C
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SLIDE 15

Printed Circuit Board

Data Schematic

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SLIDE 16

Printed Circuit Board

Data Schematic

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SLIDE 17

Printed Circuit Board

Power Schematic

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SLIDE 18

Printed Circuit Board

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SLIDE 19

Table of Contents

1.

  • 1. Pr

Proje

  • ject

ct Ov Over ervie view 2.

  • 2. Revis

vision ion A/B A/B 3.

  • 3. Fin

Final al Revis vision ion 4.

  • 4. Time

Time Lin Line e of

  • f Pr

Proje

  • ject

ct 5.

  • 5. Gr

Grou

  • up

p Res espo pons nsib ibili ilities ties 6.

  • 6. Fin

Finan ancia cials ls

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SLIDE 20

Components Overview Final Revision

E

Lead-Acid Battery Charger

Inverter

Housekeeping Controller

Wind Turbine PV Panels Rectifier Battery Bank Transformer

Dump Load

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SLIDE 21

Lead-Acid Battery Charger UC3906

Parameter UC3906 Input Voltage <40 Volts Charging stages Bulk Absorption Float Maximum Current to battery 15 Amps Package Dip Pin Power Consumption 16mW – 33 mW

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SLIDE 22

E

Inverter

Housekeeping Controller

Wind Turbine PV Panels Rectifier Battery Bank Transformer

Housekeeping Controller

Dump Load Lead-Acid Battery Charger

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SLIDE 23

Housekeeping Controller Overview

CPU Housekeeping Controller

Wind Turbine Charging

Interface Solar Charging Voltage and Current Data on the Sources

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SLIDE 24

Parameter ADS7830 package TSSOP 16 A/D Pins 8 single-ended 4 differential A/D conversion 8-bit 70-ksps Internal/external reference Communication Protocols *I2C Voltage Supply 2.7V – 5V Power Consumption 180 uW (Standard Mode)

Data Collection

ADS7830

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SLIDE 25

Housekeeping Controller

CPU Housekeeping Controller

Wind Turbine Charging

Interface Solar Charging Voltage and Current Data on the Sources

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SLIDE 26

Housekeeping Controller

LCD Screen: LCD-09395

Parameter 16x2 LCD Communication *I2C Operating Voltage 5V Operating Current 60mA Power Consumption ~ 300mW Cost $10

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SLIDE 27

Housekeeping Controller

I2C 3.3V to 5V Voltage Leveler

Parameter TCA9406 Operating Voltage Vcca:1.6 V-3.6 V Vccb:2.3 V-5.5 V Level Translation Range 3.3 V to 5 V Communication I2C (For LCD screen)

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SLIDE 28

Housekeeping Controller

CPU Housekeeping Controller

Wind Turbine Charging

Interface Solar Charging Voltage and Current Data on the Sources

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SLIDE 29

Parameter MSP430 LaunchPad Chip MSP430G2553 I/O Pins 20 pins: P1.0-P1.7 P2.0-P2.5 Analog to Digital Conversion Pins 10-bit 200-ksps Communication Protocols *I2C *SPI *UART Voltage Supply 1.8V – 3.3V Power Consumption < 1mW

Housekeeping Controller

MSP430G2553

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SLIDE 30

Logic Diagram

Start-up

User Selected Mode Solar Only Mode Wind Only Mode All Off Mode

Enable UC3906 Turbine voltage stable Turbine connect to battery Keep voltage stable Turbine Connect to battery If Vbatt > 26.5V charge battery TRUE FALSE Disable UC3906 Disable Turbine connect to battery

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SLIDE 31

E

Inverter

Main Controller

Wind Turbine PV Panels Rectifier Battery Bank Transformer

Wind Turbine Control

Dump Load Lead-acid battery charger

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SLIDE 32

E

Inverter

Main Controller

Wind Turbine PV Panels Rectifier Battery Bank Transformer

PV Panel Control

Dump Load

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SLIDE 33

E

Inverter

Main Controller

Wind Turbine PV Panels Rectifier Battery Bank Transformer

Storage Unit

Dump Load Lead-acid battery charger

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SLIDE 34

Storage Unit

Lead-Acid Charging Stages 1st Stage: Bulk 2nd Stage: Absorption 3rd Stage: Float

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SLIDE 35

E

Inverter

Housekeeping Controller

Wind Turbine PV Panels Rectifier Battery Bank Transformer

Load Distribution

Dump Load Lead-acid battery charger

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SLIDE 36

Output Component

Inverter Design: Aims PWRINV2.5K24 2500 Watt

Parameter AIMS

  • Max. Power

2.5kW Surge Power 5kW Wave Output Modify Sine Wave Operating Input VDC 20-30 Volts Full Load Efficiency 90% Operating Temperature

  • 15°C to 55°C

Weight 14 lbs Cost $280

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SLIDE 37

Output Components

AC-AC Transformer: SevenStar THG-1000

Parameter Dual Step Voltage Transformer Outlet 3 American Or 2 European Voltage Conversion 110V to 220V 220V to 110V

  • Max. Power output

1000Watts Weight 17 lbs

8 in

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SLIDE 38

Printed Circuit Board Schematic

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SLIDE 39

Enclosure

Enclosure box

Add it when everything in it

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SLIDE 40

Table of Contents

1.

  • 1. Pr

Proje

  • ject

ct Ov Over ervie view 2.

  • 2. Revis

vision ion A/B A/B 3.

  • 3. Fin

Final al Revis vision ion 4.

  • 4. Time

Time Lin Line e of

  • f Pr

Proje

  • ject

ct 5.

  • 5. Gr

Grou

  • up

p Res espo pons nsib ibili ilities ties 6.

  • 6. Fin

Finan ancia cials ls

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SLIDE 41

Andrea

I2C Communication User Interfacing

Juan

Lead Acid Battery Charger Enclosure

Manuel

DC-DC Buck Voltage Regulators Storage System

Randall

PCB Design Programming Logic

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SLIDE 42

Table of Contents

1.

  • 1. Pr

Proje

  • ject

ct Ov Over ervie view 2.

  • 2. Revis

vision ion A/B A/B 3.

  • 3. Fin

Final al Revis vision ion 4.

  • 4. Time

Time Lin Line e of

  • f Pr

Proje

  • ject

ct 5.

  • 5. Gr

Grou

  • up

p Res espo pons nsib ibili ilities ties 6.

  • 6. Fin

Finan ancia cials ls

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SLIDE 43

Time Line of Project

January February March April

Jan 15th - January 31st

  • Purchase IC

devices

  • Design circuit
  • Keep research

microcontroller Feb 1st-February 15th

  • Prototype design

February 22nd

  • CDR Presentation

Feb 23rd – March 1st

  • I2C code ready
  • Purchase

components March 2nd–March 10th

  • SPRING BREAK

March 11th –March 30th

  • Communication

integrate circuits troubleshooting

  • Purchase PCBs
  • Failed

communicating April 1st– April 9th

  • Design prototype

revision C

  • Test prototype
  • Purchase PCB
  • Successfully

communicating

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SLIDE 44

Table of Contents

1.

  • 1. Pr

Project

  • ject Ov

Over erview view 2.

  • 2. Components

Components Br Breakdo eakdown wn 3.

  • 3. Responsibilit

esponsibilities ies 4.

  • 4. Miles

Milestones tones 5.

  • 5. Financials

Financials

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SLIDE 45

Budget

Part Number/Device Cost per Parts Number Parts Total Cost

Charge Controller

Printed Circuit Board $1,100.00 1 $1,100.00 Circuit Board Components $100.00 1 $100.00 SchmartBOARD $30.00 3 $90.00 LCD (Display) $15.00 1 $15.00 Dummy Load MFJ-263 $99.95 1 $99.95

Battery

PVX-1080T Battery $55.00 2 $110.00

Inverter

Aims 2500 Watt $250.00 1 $250.00

Transformer

SevenStar THG-1000 $80.00 1 $80.00

Enclosure

Wood + Plexiglass $0.00 1 $0.00 4-port usb charger/ Outlet Socket $25.00 1 $25.00 USB Fan $19.00 4 $76.00

Microcontroller

MSP430G2552 $4.00 2 $8.00

Solar Panel

$0.00 $0.00

Miscelaneous

$300.00 1 $300.00 $0.00

Total

$2,253.95

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SLIDE 46

Questions?