Shade response of a full size TESSERA module

Abstract

A full size TESSERA shade tolerant module has been made and was tested under various shadow conditions. The results show that the dedicated electrical interconnection of cells result in an almost linear response under shading. Furthermore, the voltage at maximum power point is almost independent of the shadow. This decreases the demand on the voltage range of the inverter. The increased shadow linearity results in a calculated increase in annual yield of about 4% for a typical Dutch house.

A Simulation Study of Reconfigurable Modules for Higher Yields in Partially Shaded PV Systems

“…As a result, 6 REC not only performs better than 6 BPD but it can also allow considerably lower power conversion losses than 6 SP. [4,2,1] in series [5,6,3] in series I = Best 2x3 SP [4,2] in series [1,5] in series [6,3]…”

“…Adding more BPDs [1] and/or increasing the parallel interconnections between solar cells [2], [3] are effective approaches to increase the shading tolerability of PV modules. However, when a BPD is activated all the power that could be potentially generated by the solar cells connected to it is lost.…”

Photovoltatronics: intelligent PV-based devices for energy and information applications

“…To solve this issue, researchers have started to introduce elements of intelligence in PV modules. Examples of innovations that make PV modules more shade-tolerant than standard use of bypass diodes are I-module, 83 TESSERA module, 84,85 reconfigurable PV module [86][87][88] or non-conventional geometrical design of PV modules. 89 The I-module is a concept developed by IMEC that utilize the integration of miniaturized chips at a solar cell level.…”

Effects of solar cell group granularity and modern system architectures on partial shading response of crystalline silicon modules and systems

“…The Tessera module design consist of 6‐inch Metal Wrap Through (MWT) back contact technology c‐Si cells which are cut in smaller pieces, thus leading to lower currents. Out of one 6‐inch cell, 16 smaller cells are cut with 16 times lower current and connected in series in a sub cell group (SCG) 17 . Subsequently four SCGs are connected in series forming a module building block (MBB) with 64 mini cells proving almost the same voltage as a typical c‐Si module (Figure 10).…”