This project aims to be a proof of concept to increase the efficiency of a PV system. Inverters in the market have an assumed efficiency of over 90% but these figures are all based on lab testing at standard test conditions (STC), where as in most PV installations that is never the case there are different elements affecting performance, I have tested the main areas where inverters MPPT fails to track the maximum power point and proved that further improvement can be made. Please find attached a snippet with more details about the tests and results.
The highest losses monitored were when the solar panels experience partial shading which deforms the IV curve based on how many strings were bypassed, we are currently writing a bid to a funding body to start a project to develop a prototype inverter were the processor can read the feedback signals from sensors mounted in different arrangements to overcome the tracking of maximum power point and based on the shading pattern to calculate the IV and PV curves and pinpoint the maximum power point instantly instead of spending an hour or two in some cases to track it.
The project will benefit: System owners, Inverter manufacturers, PV manufacturers, by increasing the efficiency and energy harvested from PV.
Partners: Silent Sensors, Wurth Electronics, Loughborough University
For the prototype one TAPAS board will be needed, to replace the current FPGA we are looking into or work along side it.
this idea gets one TAPAS dev kit