Technical University of Cartagena (UPCT) - Spain

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1 Technical University of Cartagena (UPCT) - Spain Advanced materials for energy applications R&D group Staff: - Jose Abad (PhD physics) - Javier Padilla (PhD electrochemistry) - Antonio Fernández (PhD electrochemistry) - Antonio Urbina (PhD physics) Postdoc researchers: Lucía Serrano (PhD Computing science and LCA) PhD students: Juan-Gabriel Faxas (not involved in COST action work) Gino Roa (not involved in COST action work) Experimental and modelling capabilites for COST-Action MP1037 StableNextSol OSCs fabrication Indoor testing Outdoor testing LCA analysis

2 Organic Solar Cells fabrication Standard and inverted organic solar cells masks Dr. Blade Spin casting OSCs sizes: from 1mm 2 to 2cm 2 Evaporation/sputtering Screen printing Automated spray coating Limitations: commercial materials, no glove box, no clean room.

3 Indoor testing o Solar simulator AM1.5G, class AAB o Precission electronics (Keithley) o Controlled temperature o Controlled atmosphere o Software developed in LabView Degradation studies: o Ageing (dark/light) o Temperature cycles o Photodegradation o Humidity/gases Also: UV-Vis spectroscopy, Impedance spectroscopy, AFM and access to neutron scattering and synchrotron radiation facilities (ILL, ISIS, ESRF, Diamond)

4 Outdoor testing in Murcia - Spain

5 Outdoor testing: solar tracker + electrical scheme Measuring IV curves and feeding the grid Relays are controlled through the Parallel Port and we canmeasure individually each OPV module of one string without affecting the rest of the facility: IV measuring on OPV module #3

6 Outdoor testing: home made, flexible and reliable DC relays, regulator, MPP and transformer DC/AC microinverter Environmental sensors Communications and datalogger

7 Outdoor testing: parameters Electrical: o Voc, Isc, Vmp, Imp, FF (individual or group of modules) o I-V curves (individual or group of modules) o Input DC current & voltage to the DC/AC (LEM) o Output AC current to the grid (LEM). Environmental o Global Radiation (CMP3 Kipp& Zonnen) o Global & Diffuse Radiation (BF5 Delta-T) o Cell & Ambient Temp. (EL001 PT 100, PicoTech) o Relative Humidity (EL026, PicoTech) o Wind speed and direction.

8 Life Cycle Analysis of OSC technology ISO (advanced standardization process) Access to EcoInvent Database (and others) Also economic analysis

9 Thank you for your attention!! Within the framework of COST-Action MP1307 StableNexSol we are currently part of WG3 and WG4

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11 Brief description of the monitorized PV facilities (Murcia-Spain) Si-SAPV: Stand alone multicrystalline Silicon (4.2kWp) CdTe: Grid-connected CdTe (222kWp) A. Urbina, January 2012

12 CdTe: Grid-connected CdTe (222kWp) 3144 CdTe modules: First Solar FS Series. 30 groups connected to 30 inverters: SUNNY MINI CENTRAL 7000HV 10 supragroups : with inverters working coordinately to feed electricity into triphasic grid. Groups Module connection Module (First Solar) Surface (m 2 ) 15 8/13 (8 parallel stripes each of them composed of 13 modules connected in series) Peak power (kwp) FS-270 (70Wp) /14 FS-267 (67.5Wp) /13 FS-272 (72Wp) TOTAL Sunny-Sensor box: calibrated a-si photodiode for global irradiation sensor, ambient and module temperature, anemometer

13 CdTe: Grid-connected CdTe (222kWp) (zoom-in for details of the connections) CdTe First Solar FS series Inverters Sensor box

14 Si-SAPV: Stand alone multicrystalline Silicon (4.2kWp) 40 modules ISOFOTON 106/24MC, total installed 4.2kWp (35m2) PV generator (40 modules) 4parallel lines of 2 seriesx5 parallel modules Charge regulator Charge regulator DC Battery Voltage Inverter ISOTEL 40 SD AC 220V Voltage 24 Series connected Batteries Bank AC Load (*) For clarity only one terminal wiring is shown ISOVERTER 3000 ISOFOTON 2AT2300 Lead-acid (open)

15 Data acquisition: common structure for both PV systems Each inverter (30) (CdTe) and the regulator (Si-SAPV) provides internal parameters Additional parameters from external sensors. MySQL database with remote access enabled. Data acquisition system