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New products
used either as a stand-alone solution or in
combination. The master-slave principle
with “rotating master”—introduced on the
market by Siemens over ten years ago—is
above all an advantage in the event of
changing intensities of solar radiation
in the course of the day or in case of
cloudiness.
Depending on the degree of radiation,
the necessary inverters are energized or
de-energized by means of an ingenious
process. This increases the efficiency of
the PV plant, especially in partial-load
operation. Only the required number
of inverters is operated subject to light
intensity. The connection of as many as
four inverters in the form of a master-slave
system enables the plant to start already
at low levels of solar radiation and to
achieve very high efficiencies even in the
low output range. The rotating master
contributes to the long useful life of the
system, for the inverter unit with the lowest
operating hours is always controlled as
master and therefore the operating time
distributed uniformly among the inverters.
www.siemens.com/sinvert
IS
Oerlikon’s SOLARIS revolutionizes
production of crystalline solar cells
Oerlikon Systems’ SOLARIS simplifies the
manufacturing of crystalline solar cells.
technologies
The existing standard fabrication method
for coating crystalline solar cells is based
an energy production
on complex processes with high demands
made on cleaning and manual maintenance.
In contrast to these traditional
procedures, the SOLARIS system is based
on advanced nanotechnology. In solar cell
or photovoltaic production with SOLAR-
IS, very thin layers of silicon nitride are
applied on the front of the cells. However,
the flexibility of SOLARIS also allows coating
of the backside with various materials.
Each wafer is handled and coated separately.
With six coating chambers, a special
carrier transport mechanism and a wide
range of potential layer material, SOLARIS
is not only highly flexible but at the same
time enjoys unmatched productivity.
The machine is able to treat standard
wafer formats from 125mm 2 to 156mm 2
, with an average amounting up to 1,200
wafers per hour. Changing substrate
formats, layer materials or processes takes
less than an hour. A new system at a
customer site can be ramped up in less
than one week.
“With SOLARIS, we for the first time
apply advanced nanotechnology in the
production of crystalline solar cells,” said
Andreas Dill, head of Oerlikon Systems,
“with enormous advantages for solar cell
manufacturing.” www.oerlikon.com/systems/
solaris
Nordson® systems deliver
accurate, efficient side-seal/
edge-seal solutions for PV modules
Nordson Corporation photovoltaic (PV)
side-seal/edge-seal systems automate and
improve application of moisture barriers
in module assembly. Use of VersaPail
or VersaDrum® bulk melters in conjunction
with Nordson gear metering dispense
applicators enables use of liquefied butyl in
place of traditional butyl tape. This results
in accurate, repeatable placement of the
PV module moisture barrier along with a
faster production process.
While configurable to meet specific
requirements, the typical Nordson
system consists of a bulk melter, or even
two connected together with autochangeover,
feeding a gear metering
dispense applicator. The applicator
offers compact size and key-to-line
operation to easily integrate into new
or existing manufacturing lines. The
dispensed material, whether butyl or
virtually any adhesive or sealant, can be
applied as round beads or flat ribbons in
customizable widths and thicknesses.
www.nordson.com/solarsolutions
Essemtec introduces high-precision
solar cell printer for Photovoltaic
development
and production
The Solaris is designed for fro
cristalline Silicon Solar Cells.
The Multilayer capability allow
front side as well as passivatio
side.
ed)
Touch Panels
While touch sensing is comm
touch sensing enables a user
one fi nger at a time, as in cho
Essemsolar, Swiss manufacturer of
sensing devices are inherently
production systems for the solar industry,
brings to the market
simultaneously,
a high-class system
which
for
is espe
development and manufacturing such as interactive of solar walls and
cells with the screen Touch printer panels SP900-S. are made of gla
The new printer (Transparent is distinguished Conductive Oxid
by excellent repeatable refl accuracy ection coatings and its The ability
flexibility regarding materials, layers is another which can unique featu
be processed. Additionally, it enables
“double print” capability—to increase
the power grid aspect ratio without
Thermoelect
substrate size to another due to carrier system
g included 30 in – Global the machine Solar Technology design – July/August 2009 www.globalsolartechnology.com
rating costs
Thermoelectric devices are ba