Case ID: M19-149P

Published: 2019-12-19 11:46:05

Last Updated: 1670405236


Vivek Sivaraman Narayanaswamy
Andreas Spanias
Rajapandian Ayyanar
Cihan Tepedelenlioglu

Technology categories

Computing & Information TechnologyEnergy & PowerPhysical Science

Technology keywords

Fuel Cells
Software and Communication

Licensing Contacts

Shen Yan
Director of Intellectual Property - PS
[email protected]

Connection Topology Optimization of Photovoltaic Arrays Using Neural Networks


The production of photovoltaic (PV) energy is affected by numerous external factors such varying temperatures, soiling of PV panels, and well as partial shading which can significantly reduce power generated. Off-the-shelf PV arrays are typically connected in a series-parallel (SP) topology, featuring parallel-connected strings of series-connected panels. Cross-tied topologies represent another type of scheme which includes total cross tied (TCT) and bridge link (BL) configurations. Under ideal illumination scenarios without shading, these three configurations—SP,TCT, and BL—perform similarly, delivering comparable figures for maximum power point (PMP) and corresponding voltage (VMP). However, with electrical mismatching and partial shading, performance can vary between topologies. Therefore, a PV array that efficiently and intelligently switches topologies can maximize power generation under dynamic conditions.


Invention Description

Using neural networks, researchers at Arizona State University have developed a novel topology reconfiguration algorithm for PV arrays that maximizes power output. The network consists of a multi-layer perceptron that selects from SP, BL, or TCT topologies to optimize power production for a given set of irradiance profiles. An overall classification accuracy of 96.2% and a 12% improvement in average power was demonstrated by a simulated model.


Potential Applications

•       Solar farms

•       Solar monitoring systems


Benefits and Advantages

•       Intelligent – Learns irradiance profiles to arrive at optimal array configuration

•       Versatile – Simple to implement in any cyber-physical PV system with switching capabilities


Related Publication

Homepage of Professor Andreas Spanias