LED Solar Simulator VeraSol LSH-7520

Location: Lab 2.20 (CEMOP)
Responsible: Manuel Mendes
Newport’s Oriel® VeraSol is the first equipment in a series of innovative solar simulator designs utilizing LED light sources. The system is made up of the LSS-7120 Controller and the revolutionary LSH-7520 LED Source Head. The system provides a variable output from 0.1 sun to 1.0 sun over a 2 inch x 2 inch (51 mm x 51 mm) illumination area. The LSH-7520 is certified AAA rated to IEC 60904-9, JIS-C8912, and ASTM-E927-10 for Spectral Match, Non-Uniformity of Irradiance, and Temporal Stability. Each LED based system was put through rigorous testing for all aspects of the standards to ensure compliance. Certificates of calibration have been provided.

This innovative Sun Simulator independently drives multiple LEDs at 19 individual wavelengths spaced over the spectrum from 400 nm to 1100 nm to ensure a spectral match meeting Class A certification. The independent control of each LED allows the user to tune the output to the specific requirements of the test. This adjustment can be done at the front panel for the entire spectrum or individual band adjustment. The user can adjust individual LED output through the USB port. These spectral matches can be saved as a preset value in the control instrument.

Sun Simulator Specifications:
Maximum Solar Cell Dimensions: 51 mm x 51 mm
Alignment: Laser diode based optical alignment
Total Power Output: 110 mW/cm2 (1.1 sun)
Source Orientation: 0o, 90o (with adapter), 180o
Weight (head only): 17.2 kg
Working Plane Distance: 241 mm
Height Adjustment: 226 mm - 358 mm
Independent Band Control: 6 Bands (400 - 500 nm, 500 - 600 nm, 600 - 700 nm, 700 - 800 nm, 800 - 900 nm, 900 - 1100 nm)
Variable Output Control: 0.1 to 1.1 sun
Auxiliary Functions: 10 user settable presets, User settable output calibration, LED fault detection
I/O Connectors: USB 2.0 (B-type), DB-60; LSH interconnect port

PV-IV Measurement Setup:
Oriel IV Test Station calculates critical parameters such as short circuit current (Isc), current density (Jsc), open circuit voltage (Voc), fill factor (ff), maximum output power (Pmax), maximum output voltage (Vmax),
maximum output current (Imax) cell efficiency (η), Shunt Resistance (R@Isc), Series Resistance (R@Voc), Shunt Resistance Dark IV (RShunt), and other standard photovoltaic cell parameters.
Voltage range: +/- 60 V
Current range: +/- 3 Amps
Max Output Power: 60 W
Voltage Accuracy: 0.03%
Voltage Resolution: 10 nV
Current Accuracy: 0.12%
Current Resolution: 10 nA
Duration of IV Measurement: 1-58 s

Software: LabView based application