VK-PA-100

Four in one

Solar Cell I-V Curve Tracing
Maximum Power Point Tracking
Four Quadrant I-V Analysis
Four Probe Resistance Measurements

Experimental results taken by Segawa laboratory, University of Tokyo

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Findout the unique features of SPD Lab PV Power Analyzers

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PV Power Analyzer VK-PA-100 Specifications
Measurement Range	Voltage: ±10 V Current: 1 A with 5½-digits resolution
Measuring Technique	Digital Source Meter
Inputs	Front: 4 probes for PV devise Back: 4 wire connector for reference cell (light intensity measurement)
A/D Converters	16 Bit (2 independent ADCs for V & I measurements)
User Interface and data collecting	Computer software is provided for control of all the functions and data logging. Measurement data can be saved as a text file and directly plotted on ®Microsoft Excel graph. (Windows based PC required)
Communication	Bluetooth
Power Requirement	100 – 240 VAC (50-60 Hz)
Electrical standard
Dimensions	93 mm x 210 mm x 350 mm
Weight	2.5 kg

Main Functions
Solar Cell I-V curve Tracing
	User selectable START, END and STEP voltages. Plots current and power vs. voltage curves. Calculated results include Voc, Isc, Jsc, Pmax, Vmpp, I mpp, FF, Rs, RSH, ƞactiveA, and ƞgeoA . User can set the desired scan speed, scan time, or holding time. Advanced I-V option allows initial, middle, and end point holding times. I vs. t transient plot for all data points and/or under a selected fixed voltage.
Maximum Power Point Tracking (MPPT)
	Analyzer acts like the best load for the cell to extract maximum power and keep tracking MPP continuously. Plots Pmax ,Vmpp , Impp and Efficiency vs. time curves and also display current/power vs. voltage plots. In addition user can directly measure the open circuit voltage, short circuit current and plot the current vs. time under a given fixed output voltage.
Four Quadrant I-V Analysis
	User selectable START, END, STEP voltages and SCAN SPEED (mV/s). Plot current vs. voltage curve for given number of voltage sweep cycles in potentiostat mode. Can be use in 3 electrodes liquid cell with reference electrode.
Four Probe Resistance Measurements
	Three special functions included to easily measure sheet resistance, resistivity, and resistance. Geometric correction factors are automatically calculated according to size and measuring probe location on the sample which are entered as parameters. Measurement range 2.0 x 10-3 to 5.0 x 106 Ω .