EKO INSTRUMENTS CO., LTD. MP-180 for Single Measurements Instruction Manual Ver.7
I-V Curve Tracer MP-180 is developed as an I-V curve tracer specifically for photovoltaic cells.
This product is used for measuring the voltage-current characteristics of PV cell with solar simulator.
As well as the continuous light, this product is applicable for solar simulator with pulse light by external trigger input.
By using the attached software, automatic open/close shutter control, return sweeping, exponent function sweep, Rs &
Rsh measurement, and dark current measurement and so on are available for all kinds of PV cell measurements.
1. Applicable to Many Types of Photovoltaic Cells
Measurements with large current up to maximum of 16A and 10μA resolution are possible.
From a small cell to large efficiency cell, this instrument is applicable to many types of photovoltaic cells,
as well as dark current measurement is possible.
After the measurement, PV cell characteristics (Pm, Isc, Jsc, Voc, Ipm, Vpm, FF, η, STC) and STC
converted values/curves can be displayed.
2. PV Cell Evaluation System by Combining with
Solar Simulator
Indoor PV Cell Evaluation System can be constructed by combining with solar simulator.
By controlling solar simulator shutter, synchronized measurement can be taken.
Also applicable for pulse-type solar simulator: The measurements can be started with external trigger
input for pulse solar simulator.
Secondary reference PV cell IEC 60904-2 (JIS C8911) can be connected directly.
Irradiance fluctuation can be corrected with light intensity correction function by connecting reference
cell.
3. EKO’s Unique Monitoring & Logging Functions
Voltage, current, and other input data can be displayed on monitor and logged just like data logger.
With the desired fixed bias voltage is applied on the subjected PV cell, the MP-180 takes samplings at
setup measurement intervals then displays graph and takes logging of current, voltage and other input
data.
4. Data Evaluation and Management by Software
Three types of auto-measurement modes can be selected: A single measurement by manual,
continuous measurement by setting the measurement frequency and interval, and automatic
measurement by setting start and end time and measurement interval.
By using return-sweeping, hysteresis of I-V curve, which occurs on Die-Sensitized Cell (DSC), can be
verified on graph easily and the sweeping time can be adjusted to appropriate setting.
Voc→Isc sweep, Isc→Voc sweep, and return sweep can be measured.
Series resistance: Rs, parallel resistance Rsh can be calculated (they are calculated from the I-V curve