Adam Benjamin

Kevin Brokish

Joel Wiechmann

Joseph Wang

Capstone – Spring 2007 - CDR

Eric Wilson

Presentation Outline

•OverviewOverview•DesignDesign

•ImplementationImplementation

•OverviewOverview•DesignDesign

•ImplementationImplementation

Overview

What is it all about?

Mission Statement

The mission of SimBoulder is

to demonstrate the effective integration of

renewable energy power sources

Baseline Objectives

Model City Power Infrastructure

Integrate renewable and traditional sources

Measurement and Display

Design

It starts with a plan!

Design Outline

CPU Battery System Solar Converter Hydro System Load Usage

Block Diagram

Light

Solar Cells

Peak Power Converter

Converter Relay

Generator

Water

Pump

Power Management

CircuitryCapacitor Bank

CPU

City

LCD

Power Supply

BatteryTwo-way Converter

Current-Limiter

User Input

MSP430F1611and LCD

1D

Vcc

2P6.3/A

3

3P6.4/A

4

4P6.5/A

5

5P6.6/A

6/DA

C0

6P6.7/A

7/DA

C1/SV

SIN

7V

RE

F+

8X

IN

9X

OU

T

10V

eRE

F+

11V

RE

F-/VeR

EF-

12P1.0/T

AC

LK

13P1.1/T

A0

14P1.2/T

A1

15P1.3/T

A2

16P1.4/SM

CL

K

18P1.6/TA1

19P1.7/TA2

20P2.0/ACLK

21P2.1/TAINCLK

22P2.2/CAOUT/TA0

23P2.3/CA0/TA1

24P2.4/CA1/TA2

25P2.5/ROSC

26P2.6/ADC12CLK/DMAE0

27P2.7/TA0

28P3.0/STE0

29P3.1/SIMO0/SDA

30P3.2/SOMI0

31P3.3/ICLK0/SCL

32P3.4/UTXD0

17P1.5/TA0

64AVcc

63DVss

62AVss

61P6.2/A2

60P6.1/A1

59P6.0/A0

58R\S\T\/NMI

57TCK

56TMS

55TDI/TCLK

54TDO/TDI

53XT2IN

52XT2OUT

51P5.7/TBOUTH/SVSOUT

50P5.6/ACLK

49P5.5/SMCLK 48

P5.4/MC

LK

47P5.3/U

CL

K1

46P5.2/SO

MI1

45P5.1/SIM

O1

44P5.0/ST

E1

43P4.7/T

BC

LK

42P4.6/T

B6 41

P4.5/TB

5 40P4.4/T

B4 39

P4.3/TB

3 38P4.2/T

B2 37

P4.1/TB

1 36P4.0/T

B0 35

P3.7/UR

XD

1

34P3.6/U

TX

D1

33P3.5/U

RX

D0

U1

24VccB (3.3V)

23VccB (3.3V)

22O\E\

21B1

20B2

19B3

18B4

17B5

16B6

15B7

14B8

13GND

12GND

11GND

10A8

9A7

8A6

7A5

6A4

5A3

4A2

3A1

2DIR

1(5V) VccA

U3

Level Shifter

24VccB (3.3V)

23VccB (3.3V)

22O\E\

21B1

20B2

19B3

18B4

17B5

16B6

15B7

14B8

13GND

12GND

11GND

10A8

9A7

8A6

7A5

6A4

5A3

4A2

3A1

2DIR

1(5V) VccA

U4

Level Shifter

1 23 45 67 89 1011 1213 1415 1617 1819 2021 2223 2425 2627 2829 3031 3233 3435 3637 3839 40

H1

LCD Header33

R1

Res1

10uF

CbypassCap

10K

R?RPot

VCC5

VCC5

GND

GND

GND

GND

GND

GND

VCC5

VCC3

VCC3

VCC5

VCC3

.1uF

C?Cap

GND

VCC3

GND

100pF

C?Cap

VCC3 100K

R?

Res1

10uF

C?

Cap Pol1

.1uF

C?

CapGND

GND

GND

12345678

P?

Header 4X2

GND

From Commercial

From Industrial

From Residential

From Transportation

From Solar Cell

From Generator

From Battery

From Wall

Sun Control

Software Block Diagram

Store Power Usage Data

Store Power Generation

Data

Update Virtual LCD

Write to LCD

City Control

Sun Control

Interrupts

Loop

LCD Layout

Schematic – Battery System

12V DCBattery

10uF

CinCap 10uF

CoutCap

Q2MOSFET-N

Q1MOSFET-N 300uH

L1

Inductor

1.6

RloadRes1 100K

RaRes1

400K

RbRes1

GND

GND

16Vref

15Vin+

14Output B

13 Vc

12Ground

11Output A

10Shutdown

9Compensation

8Soft Start

7Discharge

6Rt

5Ct

4Osc Output

3Sync

2N.I. Input

1Inv Input

PWM Chip

Header 3X2

8NC

7V+

6Output

5Balance

4V-

3N.I. Input

2Inv Input

1Balance

LF356

Header 3X2

VCC15

8uF

Cc

Cap

162.4nF

Cd

Cap

100

Rc

Res1

10K

RpotRPot

GND

3.9VD1

D Zener

GND

350

RdRes1

12.8K

Rt

Res1

1nF

Ct

Cap

GND

10uF

CsoftCap

GND

GND

2nF

C1

Cap

1nF

C2

Cap

VCC15

GND

8NC

7O\U\T\A\

6Vdd

5OUT B

4IN B

3GND

2IN A

1NC

Driver Chip TC428

Header 3X2

GND

VCC15

1nF

C3Cap

GND 1nF

C4

Cap

GND

1K

R1

Res1

1K

R2

Res1

Specifications – Battery System

Charge battery when excess power is available

Discharge battery when more power is needed to power city

Store excess power using 12V, 7Ah sealed lead-acid battery

Convert battery voltage to 5V city voltage using bi-directional Buck converter

Solar Panel Test ResultsPower vs. Voltage

0

0.5

1

1.5

2

2.5

3

3.5

4

4.5

5

0 5 10 15 20

Voltage (V)

Po

wer

(W)

Table

Close

Solar Converter Schematic

Buck Converter

Current-sensing feedback

Specifications - Solar Converter

• Max solar panel output power = 4 W at 15.5 V

• Duty cycle D = 0.3• Small resistor Rtest = 0.1Ω used to

determine current• Peak Power Tracker takes output

voltage of sub-tractor circuit• Compares output voltage with

previous voltage

Specifications – Hydro System

Pump water over turbine with sump pump

Generate power using Pittman GM9236 DC brush motor with gear ratio of 19.7:1

Convert output voltage of generator to city voltage using Buck converter

Schematic – LEDs

17

Rg1

8

Rg2

DgDgDg Dg Dg Dg Dg Dg

7.2

Ry1

DyDg Dg Dy

DyDg Dg Dg

5.8

Rr1

DgDg Dg Dg

DgDg Dg Dg

Dr

Dg Dr

Dg

2

31

S?SW-SPDT

2

31

S?SW-SPDT

2

31

S?SW-SPDT

8

Rg2

DgDg Dg Dg Dg Dg

17

Rg1

Dg Dw

2

31

S?SW-SPDT

1

Current Sensing Resistor

R

GND

GND GND GND

GND

Q?MOSFET-N

Q?MOSFET-N

Q?MOSFET-N

Q?MOSFET-N

OffSheet

OffSheetOffSheet

OffSheet

OffSheet

VCC

Schematic – Heating Element

1

Current Sensing Resistor

ROffSheet

Q?MOSFET-NOffSheet

Q?MOSFET-NOffSheet

Q?MOSFET-N

OffSheet

Q?MOSFET-N

OffSheet

GND

Implementation

Beginning to Implement

Division of Labor

SimBoulder Task Division

KevinCPU

Peak Power Tracker

Joel & AdamHydro System

Battery ConverterCity ConstructionPCB Construction

EricSolar

ConverterPeak Power

Tracker

JoeLoad Usage

Project Conclusion & Impact

Project Timeline

Project TimelineJoel & Adam

Hydro SystemBattery ConverterCity Construction

Purchase Motor/Generator (March 2)

Test Hydro System IV Characteristics (March 7)

Construct turbine and complete Hydro System Setup(March 20)

Full City Integration(April 17)

Purchase Battery (March 2)

Purchase City Construction Material(April 3)

Design and Construct City(April 10)

Design and Construct Converter w/ Voltage Feedback(March 20)

Design and Construct Converter, w/ current Feedback(March 15)

Project TimelineKevinCPU

Design Input and Output to CPU (March 2)

Get LCD Working(March 23)

Get Input Working (March 30)

Get Output Working and Complete Code for Output(April 6)

Complete Code for Input & Display(April 13)

Full City Integration(April 17)

Project TimelineEric

Solar Converter

Design Power Converters(March 2)

ConstructPower Converter(March 20)

Test Solar System Operation(April 9)

Full City Integration(April 17)

Project TimelineJoe

Load Usage

Test Load Usage for Heating Element & Transportation System (April 10)

Test LED’s & Electric Motor(March 27)

Design and Construct Heating Element & Transportation System(April 3)

Design and Construct LED’s & Electric Motor(March 20)

Full City Integration(April 17)

Project TimelineAdamPCB

Full City Integration(April 17)

Finalize schematic in Altium for PCB(March 5)

Send off schematic for PCB construction(March 12)

Revise and Resend update PCB schematic for construction(April 3)

Parts ListComponent Unit Price Quantity Total Cost10W Solar Cell (BSP-1012) $116 1 $116Sump Pump_(Grainger 3P640) $150 1 $150LEDs (SS564UAEC) (set of 12) $10 3 $30Legos XXL 2000 Barrel (#5491) $50 1 $50Wood and Nails $25 1 $25Generator Equipment $100 1 $100Converter components (R, C and L) $150 1 $150Relay_(Grainger 6C873) $10 1 $10Sterilite 66 qt. ClearView tub (4) $35 1 $35LCD Screen (CFAG12864BTMIV) $55 1 $55Development Board MSP430 $55 1 $55Current Sensors (CSLA2CD) $18 6 $1089V 250 mAh Rechargeable Battery $20 1 $20PCB Fabrication Costs $150 1 $150

Milestone 1•Construction of Hydro system Converter

•Construction of Battery Converter

•Solar Panel Converter

•LED and Electric Motor Construction

•First PCB submitted

Milestone 2

LCD working and code written

Heating elements and transportation built

Second PCB submitted (hopefully received)

Questions?