More Power: Your Benefits with J.v.G.

Own in-house research department from  J.v.G. Thoma GmbH

You have access to new, path-breaking processes - both in the manufacturing process as well as in the module technology. J.v.G. has its own in-house research department and is the holder of numerous patents pertaining to the production process. Do not merely keep pace with the competition, but play an active role in developing the market!

An important milestone in this path is the HPTP technology of J.v.G. Thoma. It is the basis of the so-called DESERT Modules™ (High-temperature modules).

DESERT®/TROPIC® general information

More Power: Your benefits with J.v.G.

The application of PV modules in the extreme climates of the desert regions involves specific requirements concerning raliability issues due to high environmental stresses influencing all module components. Up to now, PV modules and certifications are optimized for the needs of the major PV markets of the past, being mainly situated in Europe before 2014.

To reach typical lifetimes of 20 to 25 years also for desert regions, the technical configuration and design of PV modules and components needs to be adapted to the specific environmental conditions. High stress levels have to be considered as challenges especially for the following environmental factors:

» High irradiation level, including UV (see below)
» High ambient temperature, also including high temperature changes
» Sand and dust: soiling and abrasion
» Relative humidity
» Mechanical loads (wind speed)

A desert module should be optimized to harness the great potential of the high irradiation levels in the solar-rich countries, reducing losses due to durability issues at the same time. By optimizing design and used materials as well as introducing innovative new technologies such as bifacial and half-cell modules or durable Anti-Soiling Coatings (ASC), a strong position can be reached in the emerging energy markets of our future. The following report describes the main challenges and possible solutions for the development of an optimized “DESERT Module”.

High Irradiation

High Irradiation

High irradiation generates more current and more power in solar modules, but also electrical resistive losses are increase, reoptimizing cell type and size as well as cell interconnectors allows to increase module power and energy yield. Furthermore higher irradiation leads to increased module temperature which reduces energy module. Passive and active cooling of modules is an interesting for increasing energy yield and module performance.

Specific environmental conditions DESERT®/TROPIC®

Global Horizontal Irradiation

The sun light received by the earth travels through the earth’ atmosphere. As the optical path length from sun to earth’ equator is shorter as the path length B from sun to Northern Europe, less photons are absorbed by the earth’ atmosphere. This is the reason why in so called Sun Belt regions the irradiation is higher.

High irradiation generates high current and thereby high power in solar modules. But the higher current also leads to a higher resistance in the electrical conductors inside the module and the solar cells. In the J.v.G. Thoma DESERT Modules the solar cells as well as the busbars between the cells are optimized to reduce the electrical resistance and thus reach an increased module power and energy yield.

High UV Irradiation

In the Sun Belt regions, the solar modules must withstand higher UV irradiation doses. Since all polymer materials are in general sensitive to UV illumination, the materials for DESERT Modules must be carefully selected to resist this impact. Regarding standard module materials, high UV doses can lead to brittleness of backsheets, as well as browning of EVA material. The J.v.G. Thoma Diamond DESERT Foil as well as the DESERT backsheet have excellent durability properties under UV exposure.

You are interested in our DESERT® & TROPIC® Technology? Please contact us: