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
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