DAP-PL-4314.00 Test-Report Power determination on PV-Modules at Standard Test Conditions (STC) and PID-Test PI-Report-Number: 201210260a_V2 2012/04/03 Client: Day4 Energy Inc. FAO Mr. Benjamin Duperthal 8168 Glenwood Drive Burnaby, BC V3N 5E9 Canada Consultants: Photovoltaik Institut Berlin AG Wrangelstraße 100 D-10997 Berlin Note: This report replace PI-Report-Number: 201210260a_V1, issued on 2012/03/23 because of exchanged wording: 1. Exchanged words - Prone to -> classified to (p. 10; 11) Photovoltaik-Institut Berlin AG PV Module technology Testing Consulting Development Research Wrangelstr. 100 10997 Berlin Company site: Berlin Trade register: Amtsgericht Charlottenburg Nr. HRB 106413 B Managing board: Dr. Paul Grunow. Prof. Dr. Stefan Krauter. Dipl.-Ing. Sven Lehmann Head of Supervisory board: Prof. Dr. Rolf Hanitsch Phone: +49 30 814 5264-0 Fax: +49 30 814 5264-101 www.pi-berlin.com VAT No.: DE252416715 Swift-BIC: DRES DE FF 100 IBAN: DE49 1008 0000 0943 3600 00 Bank account: Commerzbank AG BLZ 100 80 000 Account: 094 33 60 000
2 Test Report Report-Number: 201210260a_V2 Client: Address of Laboratory Day4 Energy Inc. Mr. Benjamin Duperthal 8168 Glenwood Drive Burnaby, BC V3N 5E9 Canada Photovoltaik-Institut Berlin AG Wrangelstraße 100 Gebäude 43 - Labor D-10997 Berlin Proposal number: 20120170 Order number: 201210260 Order date: 2012/01/19 Delivery date: 2012/02/10 Test start: 2012/02/27 Test end: 2012/03/13 Responsible project engineer: Dipl. Phys. Alexander Preiss Person in charge Dipl. Phys. Alexander Preiss Checked by André Prorok, M.Sc. The duplication, publication as well as passing on of this report is only allowed if it is complete and written permission from the PI-Berlin AG is given. The test results in this report relate just to the testing subject. Photovoltaik-Institut Berlin AG Report N.: 201210260a_V2 2/11
3 Test Report Content 1 General information of the testing subjects and label pictures... 3 2 Results of test... 4 2.1 I-V-Curve determination at Standard Test Conditions (STC)... 4 2.2 Electroluminescence analyse... 10 1 General information of the testing subjects and label pictures Serial number Producer Type 110006318 Day4Energy D448MC 111003055 Day4Energy Day4 60MC-1 Cell material multi-c- Si multi-c- Si Number of cells Module area [m²] 48 1.30 60 1.01 Figure 1: Label picture of module types D448 MC and Day4 60MC-1. Photovoltaik-Institut Berlin AG Report N.: 201210260a_V2 3/11
4 Test Report 2 Results of test 2.1 I-V-Curve determination at Standard Test Conditions (STC) General information about the measuring system: The I-V-Curve has been determined at Standard Test Conditions (STC) in accordance with IEC 60904-3. Thereby a solar simulator Class A type Pasan SS3b has been used. The spectrum has been tested by TÜV- Rheinland on the 2010/01/12. The calibration of the solar simulator has been performed with a stabilized cell with WPVS (World Photovoltaic Standard) cell format. The calibration of the cell has been done by PTB on the 2010/02/13 and the calibration sign is 47102-PTB-10. The measuring system error referring to the maximum power is <±3%. The mismatch correction value for multi-c-si and the solar simulator mentioned above is 1.008. Temperature coefficients (PI standard values) corrected with STC-tool 2.0.4: T coeff V oc : T coeff I sc : -0.33 %/K 0.052 %/K Statement of the estimated uncertainty of the Maximum Power determination (IEC 10.2) test results: Updated: 2011/03/23 IEC Test measurand relative error repeatability Pmp 2.9% 0.33% Voc 1.3% 0.12% Isc 2.2% 0.13% 2.1.1 Initial STC Result compilation Serial number P MPP [W] V MPP [V] I MPP [A] V OC [V] I SC [A] FF [%] Power deviation to label [%] 110006318 179.2 23.62 7.586 29.36 8.127 75.12-0.4 111003055 211.2 28.60 7.384 35.84 7.975 73.88 0.6 Photovoltaik-Institut Berlin AG Report N.: 201210260a_V2 4/11
5 Test Report 2.1.2 I-V-Curve determination at STC SN: 110006318 The measurements are accomplished at an irradiance of 1000 W/m² and a sweep time of 8 ms (1-flash). The results are then corrected to 25 C. Label data: Producer: Day4Energy Serial number: 110006318 Module type: D448MC Test-results: Deviation to label [%]: P MPP [W]: 180 179.2-0.4 V MPP [V]: 23.7 23.62-0.3 I MPP [A]: 7.6 7.586-0.2 V OC [V]: 29.4 29.36-0.1 I SC [A]: 8.1 8.127 0.3 FF [%]: 75.64 (PI calculated) 75.12-0.7 9 I-V-Curve 8 Current [A] 7 6 5 4 3 1000 W/m² 2 1 0 0 5 10 15 20 25 30 Voltage [V] Figure 2: Temperature corrected I-V-Curve of module 110006318. Photovoltaik-Institut Berlin AG Report N.: 201210260a_V2 5/11
6 Test Report 2.1.3 I-V-Curve determination at STC SN: 111003055 The measurements are accomplished at an irradiance of 1000 W/m² and a sweep time of 8 ms (1-flash). The results are then corrected to 25 C. Label data: Producer: Day4Energy Serial number: 111003055 Module type: Day4 60MC-1 Initial testresults: Deviation to label [%]: P MPP [W]: 210 211.2 0.6 V MPP [V]: 28.69 28.60-0.3 I MPP [A]: 7.33 7.384 0.7 V OC [V]: 36.02 35.84-0.5 I SC [A]: 7.84 7.975 1.7 FF [%]: 74.47 (PI calculated) 73.88-0.8 9 I-V-Curve 8 Current [A] 7 6 5 4 3 1000 W/m² 2 1 0 0 5 10 15 20 25 30 35 40 Voltage [V] Figure 3: Temperature corrected I-V-Curve of module 111003055. Photovoltaik-Institut Berlin AG Report N.: 201210260a_V2 6/11
7 Test Report 2.2 Polarisation analysis 2.2.1 General information of the analysis method To analyse the potential induced degradation problem the following test sequence were implemented: The modules were tested with the following PID test sequence: I-V measurement in accordance with IEC60904-1 before PID. Initial electroluminescence analysis due to the PI standard. Grounding of the module as described in the manual (via frame). Temperature of 85 C. Relative humidity of 85%. Applied voltage of the maximum system voltage given by the label between the cells and the frame. Degradation period of 48 hours. Final I-V measurement in accordance with IEC 60904-1 within four hours after finishing the test. Final electroluminescence analysis to evaluate the PID spread. For assessing the tested objects the modules will be classified in three PID quality categories A, B and C. A classifies modules with power drops below 5%, B between 5 and 30% and C all modules with a power deviation above. Photovoltaik-Institut Berlin AG Report N.: 201210260a_V2 7/11
8 Test Report 2.2.2 I-V-Curve determination after PID-test at STC SN: 110006318 The measurements are accomplished at an irradiance of 1000 W/m² and a sweep time of 8 ms (1-flash). The results are then corrected to 25 C. Initial test results: Producer: Day4Energy Serial number: 110006318 Module type: D448MC Test-results after PID: Deviation to initial [%]: P MPP [W]: 179.2 179.9 0.4 V MPP [V]: 23.63 23.63 0.0 I MPP [A]: 7.586 7.612 0.3 V OC [V]: 29.36 29.40 0.2 I SC [A]: 8.127 8.178 0.6 FF [%]: 75.11 74.81-0.4 9 I-V-Curves 8 Current [A] 7 6 5 4 3 Initial after_pid 2 1 0 0 5 10 15 20 25 30 Voltage [V] Figure 4: Temperature corrected I-V-Curve of module 110006318. Rated with class A. Photovoltaik-Institut Berlin AG Report N.: 201210260a_V2 8/11
9 Test Report 2.2.3 I-V-Curve determination after PID-test at STC SN: 111003055 The measurements are accomplished at an irradiance of 1000 W/m² and a sweep time of 8 ms (1-flash). The results are then corrected to 25 C. Initial data: Producer: Day4Energy Serial number: 111003055 Module type: Day4 60MC-1 Test-results after PID-test: Deviation to initial [%]: P MPP [W]: 211.2 211.7 0.3 V MPP [V]: 28.60 28.36-0.9 I MPP [A]: 7.384 7.467 1.1 V OC [V]: 35.84 35.84 0.0 I SC [A]: 7.975 7.992 0.2 FF [%]: 73.88 73.91 0.0 9 I-V-Curves 8 Current [A] 7 6 5 4 3 Initial after_pid 2 1 0 0 5 10 15 20 25 30 35 40 Voltage [V] Figure 5: Temperature corrected I-V-Curve of module 111003055. Rated with class A. Photovoltaik-Institut Berlin AG Report N.: 201210260a_V2 9/11
10 Test Report 2.3 Electroluminescence analyse 2.3.1 Electroluminescence SN: 110006318 Initial EL-Picture of module SN: 110006318. EL-Picture after PID test of module SN: 110006318. Rated with class A. The module 110006318 is classified to category A. Photovoltaik-Institut Berlin AG Report N.: 201210260a_V2 10/11
11 Test Report 2.3.2 Electroluminescence SN: 111003055 Initial EL-Picture of module SN: 111003055. EL-Picture after PID test of module SN: 111003055. Rated with class A. The module 111003055 is classified to category A. Photovoltaik-Institut Berlin AG Report N.: 201210260a_V2 11/11