Mounting Issues PVMD Olindo Isabella Delft University of Technology
Learning objectives 1. PV module design 2. Electrical properties 3. Temperature effects 4. Mounting issues 1. Mutual shading and module spacing 2. Earthing 3. Practical example of mounting issues 5. Reliability and I-V tests
Aluminum supporting structures Photo lower right: Fraunhofer ISE, Freiburg, Germany Photo left: Oregon Department of Transportation (Solar panel installation Uploaded by Smallman12q) [CC BY 2.0 (http://creativecommons.org/licenses/by/2.0)]
Wooden supporting structures Photo: Voltwerk AG, Hamburg, Germany
Electrical Connection Technology 1. Screw clip for use with cable and sleeve 2. Screw connection with cable terminal 3. Spring-tension clip 4. Externally insulated plug-in connector 1 3 2 4 Image: Solarpraxis AG, Berlin, Germany
Example of BIPV system (6.9 kW p ) TT GCB M INV HCB EBB foundations earth Photo courtesy of J. Krč
House Orientation PV Photo courtesy of J. Krč
PV Modules 120 modules Rated Power = 57,5 W Photo courtesy of J. Krč
PV Modules Framework SolRif framework Flat framework Photo courtesy of J. Krč
Photo courtesy of J. Krč
Installation on Wooden Framework Photo courtesy of J. Krč
Installation on Wooden Framework Photo courtesy of J. Krč
BIPV system (6.9 kW p ) Photo courtesy of J. Krč
BIPV system (6.9 kW p ) Photo courtesy of J. Krč
Temperature, Irradiance and Wind Sensors Photo courtesy of J. Krč
Schematic of the array
Schematic of the array 2.5 kWp 2.5 kWp 2.5 kWp
Schematic of the array G 1 G 2 G 3 G 4 G1+ G1- G2+ G3+ G3- G2- G 5 G 6 G 7 G 8 G4+ G4- G5+ G6+ G6- G5- G7+ G7- G8+ G 9 G 10 G 11 G 12 G9+ G9- G8- G10+ G10- G11+ G12+ G12- G11-
DC Wiring from roof to basement Photo courtesy of J. Krč
Inverters Panel in the Basement 3 inverters (single phase) Web-box for monitoring DC cabinet AC cabinet Photo courtesy of J. Krč
DC Cabinet Fuses DC Junction-terminal To the inverters DC-side arresters Photo courtesy of J. Krč
AC Cabinet AC-side fuses Main AC Equipotential 3-phases Bonding Bar switch Photo courtesy of J. Krč
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