Page 27 - North American Clean Energy May/June 2019 Issue

Image 5: Dust and sand trap
At the end of January of this year, a large part of the Midwest and the Northeast was hit with an intense Artic air mass. Some areas fell below -30°F, with wind chills more than -50°F. anks to their heating resistors, several PV inverters were reported as active and able to convert power.
Accommodating uneven
topography
For utility-scale PV power plants (20MW
or higher), Central Inverters are still
considered the preferred option due to
their incredible CAPEX and OPEX value-
proposition, whether the topography
of the terrain is at or not. Improved
design has allowed inverters a high
degree of versatility through scalable
blocks of power. Inverters may be sized
as 1.0MVA to 1.8MVA units, which can
be combined as 2.0MVA to 3.6MVA in a
dual-inverter con guration. ese can
be combined as skidless or integrated-
skid stations of 1MVA, 2MVA, 3.6MVA,
5.4MVA, or 7.2MVA. Di erent sized
stations are deployed to a site based on
the speci c topography of the location,
and various sizes of sub-arrays in the
eld. ese newer inverters also o er
a suite of output voltages (e.g. a range
between450Vto690V)tooptimize M
the medium voltage collection system
As the PV industry has evolved to be one of the lowest cost sources
of new energy generation, it has sparked a demand for PV systems in
all corners of the world, including those with challenging locations featuring rugged terrain, drastic temperature variation, and extreme weather events. A robust inverter design that can operate anywhere
is fundamental to a long, issue-free life for the PV system. Inverter suppliers continue to provide innovations that protect the inverter from harsh environmental conditions, while ensuring high performance, and reliable and durable operation for the lifetime of a project.
Nohra Nasr is Head of PV Sales & Business Development - USA at Ingeteam, a global market leader specialized in the design and manufacturing of power conversion and electrical equipment, mainly large inverters, frequency converters, motors, and generators for Wind, Solar PV, Energy Storage and Hydropower generation plants.
Ingeteam /// www.ingeteam.com
architecture of each project.
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NACE_Dynapower_ad_FIN.pdf
1 2/26/19
11:37 AM
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Image 6: PV inverters in the desert
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Image 7: PV inverters in cold climate Location: Ouarzazate - Atlas Mountains, Morocco
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North American Clean Energy
27
Image 8: PV inverters in snowy environment