In the development of some types of solar cells, such as electrochemical cells (i.e. DSSC and Perovskite solar cells), aging measurements are crucial. Cells should be long-term test in a loaded condition and periodically measured their characteristics.

For this purpose, we have developed a special tracker of the maximum power point for power up to a few hundred mW. Due to its low power we named it micro MPPT – uMPPT. The circuit in addition to tracking also allows operation in open circuit, short circuit and at constant voltage.

The tracker is available as a six channels demo board, and as an instrument with hundreds of channels.

Flexibility

• Full 4-wire connection to each PV cell
• Automatic PV cell polarity detection
• Sequential 4-wire bypass switching to SMU
• Multiple options for cell connection

Expandability

• 6 channels on development board
• 24 channels per μMPPT board
• Up to 12 μMPPT boards per 3U crate
• Communication over RS-485, optionally also USB

• Input range: ±1.75 V / up to 100 mA / 200 mW
• Voltage meas. resolution: 1 mV
• Current resolution: 4.5 digits (different range options)
• Lowest input resistance: 4,5 Ω
• Temperature measurement: 1-wire bus
• Communication: RS-485, optionally also USB

Product brochure

Users manual

LabVIEW drivers

For additional information please contact:

• Marko Jankovec, E-mail: Marko.Jankovec[at]fe.uni-lj.si, Phone: +386 1 4768 931