Advanced I-V Tracer and Dynamic Load Tracker

Introducing the Ro3 Auto-Ranging IV tracer and Dynamic Load Tracker for Thermoelectric Generators and Photovoltaic Cells.

This new dynamic load is capable of testing not only single TEG devices down to the microWatts level but also TEG arrays continuously generating up to 150W and 250W when doing an I-V scan.

Check out the RO3 Datasheet Now!

RO3 Datasheet

The RO3 can also emulate a MPPT converter thus allowing you to test your TEG system at load to verify overall thermal and electrical performance.

The RO3 features a sleek touchscreen interface giving you complete control to generate an IV trace, operate as a DC load, or emulate the operation of a MPPT converter.

Input Voltage Range Input Current Range Maximum Power Dissipation: 250W (in I-V mode)
 0 – 65 Vdc 0 – 25 Adc Minimum Voltage at Load: 10 mV
Accuracy down to 0.3% Accuracy down to 0.3% I-V trace with up to 65 points
Resolution down to 32 uV Resolution down to 6 uA  Fast I-V scan in less than 10 msec

The RO3 also has a USB interface to connect to a computer. A PC software is provided to simultaneously control or monitor the RO3 and export data to a csv file.

In I-V tracing mode it is possible to select the number of points (between 5 / 17 / 33 / 65) and the delay time between each point (between 1 msec and 250 msec).

The RO3 can operate the TEG(s) connected to its input at-load and dissipate the power generated.

Three operating modes can be selected:

  • Constant Current (CC) with any level of current between 25 uA and 25 A.
  • Constant Voltage (CV) with any level of current between 120 uV and 65 V.
  • Fractional Open-Circuit (FOC) with any fixed percentage of the open-circuit voltage between 1 and 99 %. This mode can be used to effectively emulate the operation of a MPPT converter.
  • Perturb & Observe (P&O) tracking mode.

In each mode, the instantaneous open-circuit voltage and short-circuit current are periodically measured (in less than 5 msec).

Front view of the RO3
The RO3 device (rear view)

Read our application note on TEG Testing

Download it now!
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