The indoor automatic PV cell evaluation system is based on a solar simulator and I-V curve tracer, MP-160 or MP-180 depending on the PV cell characteristics. In combination with the optional thermal cooling plate for optimal cell temperature control and automatic transfer system, continuous measurements can be made. For testing at different cell temperatures or better control of the cell temperature a sun simulator climate chamber can be used. The indoor PV cell evaluation system is widely used in research applications and inspection of cells during the manufacturing process.
Solar simulators can be classified by the spectral distribution, spot uniformity and light output stability respectively Class A ~ C stated in JIS C 8912 (crystalline) and JIS C 8933 (amorphous). EKO solar simulator series comply with such JIS standards.
The high precision MP-180 I-V tracer is the ultimate research instrument for Photovoltaic cell development and quality inspection purposes. Its wide input range (µA - A) makes the MP-180 a unique all round measurement device suitable to test all types and sizes Photovoltaic cells. When used in combination with a Pulsed or Continuous Sun Simulator, I-V curve measurements can be fully automated using the built-in trigger function either to synchronise with the flash or control of the sun simulator shutter. The MP-180 is operated by a PC using advanced software functions for visualising data, data management and to calculate specific cell parameters e.g. Rs, Rsh and other characteristic values.
By testing cells using a large solar simulator will make it difficult to maintain a constant cell temperature and requires a special temperature control set up. EKO’s small Climate Chamber and Cool Air Generator is capable to control the temperature from the back side but also cools the cell from the top by ventilating cool air to maintain a constant temperature. The temperature control unit can simulate different temperature conditions, such as I-V measurements in below-zero temperature and temperature above the standard test conditions and has a temperature cycle function.
The 4-terminal test jig, with vacuum mount for optimal contact and temperature control fully optimizes the I-V measurement. Besides, the contact resistance and lead wire resistance is minimized, to make an accurate evaluation of cells possible. All Jigs for Si crystalline cells, Si thin film cells, pack contact cells, DSC, and organic semiconductor cells are adapted by EKO to be able to work under optimal conditions.
The temperature control unit will keep the temperature of the reference cell stable at 25C as defined in the measurement standard. A thermostat liquid bath can be precisely controlled at the preferred temperature, but also at different temperatures when required.
Different types of solar sensors can be used, either to measure the sun simulator stability or spectral distribution of the lamp.
|Measuring range (V)||300V, 30V, 3V||1mV - 20V|
|Measuring Range Current (A)||10A, 3A, 0.3A, 0.03A||10µA - 16A|
|Rated power of PV device||Max.300 W|
|A/D converter||16 Bit|
|The number of data / Sweep||Max. 256 points|
|Communication interface||RS-232 (38400 bps)|
|Size||370 W x 350 D x 133 H (mm)|
|Weight (g)||9 kg|
|Power supply||AC 100 to 240 V, 50/60Hz,
|AC 100 to 240 V, 50/60Hz,