PV CORE METER

1R. Drouin

INSTALLATION

CONCEPTION

During conception this chart was

drafted to compare alternative

available technologies

With price and performance trade

off the 5 KW hybrid battery

backed grid-tie architecture was

selected

R. Drouin 2

SOLAR Photo Voltaic PANEL (ELETRIC HEAT BACKUP) SLR MATRIX DEV.xls

SELECT SYSTEM CONFIGURATION COLUMB C1, C2, C3, C4, C5, C6

POWER OUTPUT ( ALL ARE STRING TIE SYSTEMS)

STANDARD KILOWATT HOUR METER

OFF GRID

PUBLIC SERVICE NET METERING STATUS (PUBLIC SERVICE INSTALL NEEDED)

BATTERY BACKUP

BENEFITS

1.5KW SCALEABLE STRING GRID TIE INVERTER (70%)

R = POSSIBLE $ REFUND EXCESS POWER GENERATION

N =NO PUBLIC SERVICE SITE EVALUATION OR INSTALL

5 = UP TO 5KW SCALEABLE STRING GRID TIE INVERTER

L = INSTALL LOWER COST FOR EVALUATE

REDUCE ELECTRIC BILL

MINIMAL POWER OUTAGE BACKUP

ELIMINATE ELECTRIC BILL

F = FULL POWER OUTAGE BACKUP

S = NO BATTERY TO SERVICE

PUBLIC SERVICE REBATES

PUBLIC SERVICE REBATES WITH BACKUP

$ COST

WATT PER

C1 C2 C3 C4 C5 C6

Solar Panels300-1.2KW C C X N L X X 2000 LATER 600 WATTS FOR +$1K

300 AND SO ON

2.5, 5KW C C X N 5 X X X F 23K

2.5K

2.5, 5KW C X R 5 X X X S X 20K

2.5K

2.5, 5KW C C X R 5 X X X F X X 24K LATER 5KW FOR +$24K

2.5K

WORK BREAKDOWN

STRUCTURE (WBS)

Developed an XL spreadsheet to

graphically convert a WBS into a

timeline to input into Microsoft

Project.

To the right is a sample

representation of the this XL

Program.

(The MS Project sample may be

added at a subsequent time)

R. Drouin 3

BOM $

An XL spreadsheet was

developed to

-identify each item

-price each item

-total cost the system

This is important not only

for the build but for tax

rebate record.

ITE

M

DESCRIPTION VENDOR ordr # $SHIP $ EA QTY COST

PN date qty cst

$0.00

$0.00

1 SOLAR PANELS SUN ELECTRIC O 7363 387.64 382.2 6 $2,680.84

SUNELEC A210 SUN-A-210-FA3 D101020

$2,293.2

0 $0.00

2 XANTREX MPPT O 7363 0 508.98 1 $508.98

CHARGE CONTROLLER XW-MPPT60-150 D101020 $508.98 $0.00

3 CONNECTORS MC 4 SUN ELECTRIC O 7363 19.98 2 $39.96

SOLAR PANEL CONN D101020 $39.96 $0.00

4 Unirac 300202 2-60" ALT-E O76416 53.32 97.41 4 $442.96

Rails, 4 L-Feet UNI300202 D101019 $389.64 $0.00

5 CABLE USE-2 10AWG FT ALT-E O76416 0 172.2 1 $172.20

500 FT GENUSE2RHW2SPL D101019 $172.20 $0.00

6

15 AMP DC DIN Rail Mount

CB ALT-E O76416 13 2 $26.00

GEN circuit breaker GENBRKDIN-15 D101019 $26.00 $0.00

R. Drouin 4

Dover , NH 3rd PV NET METERD SYSTEM

1st MOUNTING TO EXISTING BUILDING 2009

Solar panels mounted on garageCombiner, MPPT charge controller,

and grid tie inverter

R. Drouin 5

SYSTEM DESCRIPTION4.5 KW 48 VDC 240 VAC SPLIT PHASE

MAXIMUM POWER POINT TRACKINT (MPPT) CHARGE

CONTROLLER.

HYBRID GRID TIE INVERTER BATTERY BACK RESIDENTIAL

GENERATOR INPUT FOR POWER OUTAGES LASTING

MORE THAN A DAY

POWER METER MONITOR

CAN NETWORK PROGRAMED AND MONITORED MPPT

CHARGE CONTROLLER AND HYBRID INVERTER

22 X 205 WATT 18 VDC 38 INCH BY 42 INCH SOLAR PANELS

R. Drouin 6

Results of Commissioning

-2009 Third net metered

system commissioned in

Dover, NH

-NEC NFPA 70 (include article

690 Solar Photovoltaic System

-Net metered to barter

Kilowatt-hours with the public

utility PSNH

R. Drouin 7

Initial Design in Orcad

R. Drouin 8

System Wiring DiagramWiring diagram to layout representation

Substation electrical room wiring (inverter, Charge controller, combiner)

R. Drouin 9

PV PERFORMANCE METER EXISTING PATENT FOR TESTING SOLAR PANEL PERFORMANCE

LAYOUT OF TEST CONFIGURATIONAMONG DETERMINATIONS INCLUDE WEEK PANEL OR PANELS

NEED CLEANING

TEST CIRCUIT INCLUDES “NEW SOLAR CELL” AND “SOLAR CELL UNDER TEST”

TEST UNIT CAN BE MEASRUED IN PLACE UNER AMBIENT LIGHT WITOUT HAVING TO REMOVE THE PANEL FROM MOUNTING

R. Drouin 10

SOLAR PANEL CORE METERo PRESUME THE PV

PERFORMANCE METER IS COMPARE TO A DIGITAL VOLT METER

o THE METERING PORTION COULD BE DETERMINED TO BE A CORE METER.

o METERS CAN BE USED TO MEASURE MANY PARMETERS: TEMPERATURE, WEIGHT, LENGTH, HUMIDITY, DISTANCE, VOLUME, RPM, SPEED

o WHAT ELSE NEEDS MEASUREING IN A PV SYSTEM ENVIRONMENT

R. Drouin 11

PV CORE METERA SINGLE INPUT IS LOADED AND MEASURED

R. Drouin 12

Title

Size Document Number Rev

Date: Sheet of

DWG121203SMCB X1

SOLAR PV CORE METERING BLOCK DIAGRAM

A

1 1Monday , December 03, 2012

SWITCHPOWER

INDICATOR

DIGITAL TO ANALOG CONVERTER (DAC)

SERIAL PARALLEL

AND, OR RF

PERSONAL COMPUTER

LIQUID CRYSTAL

DISPLAY (LCD)

DISPLAY

MICROCONTROLLER (uC)

CURRENT LOAD CIRCUIT

ANALOG TO DIGITAL CONVERTER

BATTERY

CURRENT SENSING CIRCUIT

A/D CHANNEL A

A/D CHANNEL B

A/D may be part of uC

BAT VDC.

SW

POWER

COMMON ELECTRICAL

CONNECTION

DAC OUTPUT CONTROL

uC RUNNING MAXIMUM POWER POINT TRACKING

(MPPT)FIRMWARE

PHOTOVOLTAIC (PV) PANEL

VOLT PV

AMP PV

CURRENT

CONTROL LINES

AND DATA BUS

MAY BE

INTEGRATING DAC

APPLICATION: PV PANEL

MAXIMUM STRING ACTIVATION

2011 SET OF PV PANELS WERE #.89 A WATT

INSTEAD OF TRACKING THE SUN ELECTED TO SIMPLY FILL AVAILABEL ARE WITH PV

WITH CONTINUAL GROWTH SCALING OF SYSTEM PV WILL REACH OVER 100% OF CAPACITY AT MAXIMUM POWER

MOST HOUR OF THE DAY THE SUN TRAJECTORY IS WELL BELOW 80%

A METHOD IS NEEDED TO REDUCE THE NUMBER OF STRINGS AT PEEK POWER

INSTEAD OF DEACTIVATING STRINGS INDISCRIMINANATLY, CIRCUIT TO THE RIGHT WILL KEEP THOSE STRINGS ON THAT ARE AT MAXIMUM POWER IN UNOBSTRUCTED SUNLIGHT

THIS MAKES USE OF THE PV CORE METER

R. Drouin 13

Title

Size Document Number Rev

Date: Sheet of

DWG121203SMCA X1

SOLAR METER PV CORE APPLICATION

A

1 1Monday , December 03, 2012

PHOTOVOLTAIC (PV)

PANEL STRING

1

PHOTOVOLTAIC (PV)

PANEL STRING

2

PHOTOVOLTAIC (PV)

PANEL STRING

...

X

RL1

RELAY SPST

43

12

RL2

RELAY SPST

43

12

RL3

RELAY SPST

43

12

RL4

RELAY SPST

43

12

COM TO PC INTERFACE

PV CORE METERING

PV CORE

METERING

PV CORE METERING

PV CORE

METERING

PERSONAL COMPUTER

OUTPUT RELAY

MODULE

DATA COMMUNICATION (COM)

COM

COM

COM

COM

SERIAL PARALLEL

AND, OR RF

SERIAL PARALLEL

AND, OR USB

PC RUNS PROGRAM THAT DETERMINS WHICH PANELS PRODUCE THE MOST MPPT KILOWATTS

TO COMBINER BOX AND CHARGE CONTROLLER

METERING SAMPLED AT

LOW DUTY CYCLE

THEN KEEPS ONLY THOSE PV STRING RELAYS ENEGIZED

PV METERED FLOW CHART

Top level flow chart .

P0 is the parameter of the prior A

to D sample

P1 is the parameter of the most

recent A to D sample.

This was used to target the MPPT

level by sequentially

approximating each bit through

the P1 > P0 process.

R. Drouin 14

Declaratives

Initialize variables

Initialize DSP

Initialize LCD

Manage DAC

Capture A to D

For P1

Display data

P1 > P0

Manage

Increment DAC

parameters

Manage

Decrement DAC

parameters

P0=P1

PROGRAMMING

Programming of the

microcontroller using software

tools was done.

To the left is a sample code done

on Microchip’s MPLAB with soft

ice simulation of registers.

This section of code passes

commands to and LCD display

module.

R. Drouin 15

SOLAR 1SKY SUPPORT

Membership to Gimesound.com

providing support to 1sky.org to

promote a green economy.

Music may be found at.

http://www.gimmesound.com/Bob

Drouin/

Thank you

R. Drouin 16