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solar PV grid-tie system ongoing work in the electronic industry.

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PowerPoint Presentation

PV GRID TIE, NET METERED SYSTEMPV CORE METER

1R. Drouin

1SOLARINSTALLATION CONCEPTIONDuring 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. Drouin2

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. Drouin3BOM $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.

ITEMDESCRIPTIONVENDORordr #$SHIP$ EAQTYCOSTPNdateqty cst$0.00$0.001SOLAR PANELSSUN ELECTRICO 7363387.64382.26$2,680.84SUNELEC A210SUN-A-210-FA3D101020$2,293.20$0.002XANTREX MPPT O 73630508.981$508.98CHARGE CONTROLLERXW-MPPT60-150D101020$508.98$0.003CONNECTORS MC 4SUN ELECTRICO 736319.982$39.96SOLAR PANEL CONND101020$39.96$0.004Unirac 300202 2-60"ALT-EO7641653.3297.414$442.96 Rails, 4 L-FeetUNI300202 D101019$389.64$0.005CABLE USE-2 10AWG FTALT-EO764160172.21$172.20500 FTGENUSE2RHW2SPLD101019$172.20$0.00615 AMP DC DIN Rail Mount CBALT-EO76416132$26.00GEN circuit breakerGENBRKDIN-15D101019$26.00$0.00R. Drouin4Dover , 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. Drouin5SYSTEM DESCRIPTION 4.5 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. Drouin6Results 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. Drouin7Initial Design in Orcad

R. Drouin8System Wiring DiagramWiring diagram to layout representationSubstation electrical room wiring (inverter, Charge controller, combiner)

R. Drouin9PV PERFORMANCE METER EXISTING PATENT FOR TESTING SOLAR PANEL PERFORMANCE LAYOUT OF TEST CONFIGURATIONAMONG DETERMINATIONS INCLUDE WEEK PANEL OR PANELS NEED CLEANINGTEST CIRCUIT INCLUDES NEW SOLAR CELL AND SOLAR CELL UNDER TESTTEST UNIT CAN BE MEASRUED IN PLACE UNER AMBIENT LIGHT WITOUT HAVING TO REMOVE THE PANEL FROM MOUNTING

R. Drouin10SOLAR PANEL CORE METERPRESUME THE PV PERFORMANCE METER IS COMPARE TO A DIGITAL VOLT METER

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

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

WHAT ELSE NEEDS MEASUREING IN A PV SYSTEM ENVIRONMENTR. Drouin11

PV CORE METERA SINGLE INPUT IS LOADED AND MEASUREDR. Drouin12

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 METERR. Drouin13

PV METERED FLOW CHARTTop 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. Drouin14

PROGRAMMINGProgramming of the microcontroller using software tools was done.

To the left is a sample code done on Microchips MPLAB with soft ice simulation of registers.

This section of code passes commands to and LCD display module.

R. Drouin15SOLAR 1SKY SUPPORTMembership to Gimesound.com providing support to 1sky.org to promote a green economy.

Music may be found at.http://www.gimmesound.com/BobDrouin/

Thank you

R. Drouin16