Overview

Incorporating the accurate IV measurement function and stable light source, the KSX-3000H is designed exclusively for testing high-efficiency PV cells including Panasonic's HIT® PV Cells and features recreation of the sunlight equal to or better than IEC 60904 - 9: Class AAA and precise IV measurement at high repeatability and high throughput with lower maintenance cost.

System Configuration

The KSX-3000H Solar Cell Test System mainly consists of the following high-performance components:

  • KSS-P001 Pulse Solar Simulator/Lamp Power Supply
  • KST-P15HC IV Measuring Unit
  • KSJ-026 Cell Setter
  • KSM Series Probe bar

Note: A chiller unit and a vacuum pump are provided as options for more accurate measurement.

KSX-3000H System Configuration

Features

  • Accurate Measurement
      • Stable light source (Class AAA*)
    • Specially designed IV measurement system with 4-quadrant operation and simultaneous V/I measurement
  • Lower Maintenance Cost
    • Long-life pulse lamp (> 1 million shots)
      • Simple configuration (with neither optics nor shutter)
    • Easy lamp replacement from the side door with no adjustment required
  • Higher Throughput & High IV Data Correlation with a high-end long pulse solar simulator
  • To be upgraded from the KSX-1000 system by only changing the IV measuring unit and software

The KSX-3000H shares the same light source as the KSX-1000 but uses an improved IV measuring unit and software. It provides all the benefits of the KSX-1000, such as high measurement accuracy, low maintenance cost, and high throughput.

It is generally believed that a very long pulse (300 ms or longer) is needed to measure HIT® or similar high-efficiency cells. Kyoshin, however, has jointly developed a new test method with Japan’s National Institute of Advanced Industrial Science and Technology, AIST. This test method, the KOPEL Method®, uses both dark and illuminated IV data and can measure HIT® cells very accurately. Our IV data using a 50-ms pulse show very good agreement with the IV data under continuous light and 1000-ms long sweep time; the deviation is only 0.2-0.3%.

The KSX-3000H is already available. Or if you don’t need HIT® measuring capability for the time being, you can purchase the KSX-1000 now and later upgrade it to the KSX-3000H simply by replacing the IV measuring unit and software.

Stable Light Source

The light of the KSX-3000H is controlled very precisely, as shown in the figure below. The light fluctuations of the KSX series are controlled to the level of ±0.1% or less, a level of fluctuation that never affects the measurement. This is optimum for cell classification in mass production lines, because 0.2% efficiency classification is normally required.

Light Instability
KSX-3000H Light Instability

IV Measuring Unit

The IV measuring unit is very simple. The light is so stable as not to require any compensation or adjustment. The power supply simply sweeps the voltage from short to open or open to short. The sweep voltage is monitored at its output, not at the solar cell, to avoid the influence of the cell capacitance. Accurate IV data is measured at the cell, the voltage and the current simultaneously.

Using its 4-quadrant operation capability, the unit allows accurate measurement of dark current and Voc.

Dynamic IV Measurement
IV Measurement CircuitDiagram

Data Correlation

Based on the standard IV measuring unit used for the KSX-1000, the KSX-3000H uses a highly accurate test method called the KOPEL Method®. The following graph shows normal behavior of HIT® cell testing by a high-speed IV measuring unit. Because the capacitance is very high, the current does not follow as the voltage increases. In the opposite direction, the current overshoots as the electrons charged by the cell capacitance are released. If the measurement is slow enough, this effect can be avoided. Figure 5 shows the KOPEL Method® measurement, which uses both dark and illuminated IV data of the cell and measures HIT® with a 50-ms pulse. The IV data have very high correlation with AIST data measured using a 1000-ms pulse. The KOPEL Method® has been jointly developed with AIST, and a patent has been applied for.

KSX-3000H High Measurement Consistency

KSX-3000H System Specifications by Major Components

(1) KSS-P001 Pulse Solar Simulator
ItemSpecifications
Spectral Area350–1100 nm
Irradiation (@ cell surface)0.3–1.2 SUN (AM1.5G)
Irradiated Area

200 mm x 200 mm

Lamp TypeXenon long-arc (Pulse)
Lamp Life> 1,000,000 shots (Number of consecutive pulses without a missed shot)
Class (IEC-60904-9)

Class AAA

Pulse Duration Max. 50 ms
Dimensions500 x 500 x 800 mm
Weight (Including installing frame)50 kg (110 lb)
Power Rating1.8 kW
(2) KSS-P001 Pulse Solar Simulator Lamp Power Supply
ItemSpecifications
Output ControlHighly stable irradiation control
Discharge SpeedMin. 1.5 seconds (with 3-phase input)
Touch Panel Functions Pulse light settings, menu, aoto/manual selection, charge state monitor, and pulse counter
Manual SwitchesLight start/stop, emergency stop, and mode selection
SafetyOver-current detection, over-temperature detection
Connectors Power connector, output connector (to solar simulator), and signal connections
Input Power 1– or 3–phase 200–240 V, 50/60 Hz, 4 kVA
Dimensions570 x 630 x 1000 mm
Weight280 kg (620 lb)
(3) KST-P15HC IV Measuring Unit
ItemSpecifications
V/I Ranges (to be changed at order placement)–14 to 2 V/–2 to +15 A
Measurement Accuracy0.1% FS
Measuring Speed (software selectable)60 µs to 100 ms/@point

Dimensions430 x 360 x 160 mm
Weight8 kg
PowerSingle-phase 100–240 VAC, 50/60 Hz, 200 VA

(4) KSW-01F Measurement Software
ItemSpecifications
Measuring ItemsIsc, Jsc, Voc, Pmax, FF, Rs, Rsh, Iv, Vi, efficiency, temperature
Operating SystemWindows XP, 32-bit/64-bit Windows 7
(5) Other Components
ItemSpecifications
Cell SetterKSJ-026 (Manual), Auto version available
Installation FrameT1001B
Xenon LampLF-000-W0015

Note: For other configuration or options, please contact us via Contact Us form.

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