Environmental Engineering Reference
In-Depth Information
XEMC has successively hosted the compilation of such national
standards as GB/T “Technical Conditions and Experimental
Methods for the Grid-connected Asynchronous Wind Generators”,
GB/T “Permanent Magnet Synchronous Wind Generators—Part I:
Technical Conditions”, and GB/T “Permanent Magnet Synchronous
Wind Generators—Part II: Experimental Methods”.
Figure 28.5
National energy wind generator research & development
(experimental) centre (left); Darwind Wind Generator
Academy in Netherlands (right).
28.2.3
Leading Direct-Drive Types
XEMC specialises in the complete megawatt level direct-driven
wind turbine generators and has advanced design concept. It
removes speed-increasing gearbox that causes loud noise and
is apt to be faulty, but adopts full power converter with a simple
structure and high reliability. The converter transmits less high
harmonic to the power grid, and generates high quality electricity,
and has a great low-voltage ride through (LVRT) ability. The cost
of maintenance of it is low. During the 20 years of design service
life, the total cost of operation (TCO) was at least 15% lower than
that of double-fed wind turbines with speed-increasing gearboxes.
28.2.4
Complete Product Series
Through years of high-speed development, the complete wind
turbine products of XEMC have covered 5 kW-5 MW series, and
wind turbine generator products 5 kW-5 MW PMDD series, and
1 MW-6 MW double-fed series. In terms of wind development
and utilisation, XEMC has the integrated capability in the research
and development, in manufacturing, test and commissioning of
wind
turbine
generators,
and
in
the
measurement,
design,
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