Wind turbine bearing's Embalmed

Wind turbine bearing's Embalmed
Wind turbine equipment in the field work, and yaw, pitch Wind turbine bearing part is bare, exposed, and will be subject to air pollution and high humidity may cause corrosion bearing matrix, therefore, exposed bare yaw and pitch bearings site requirements for surface corrosion treatment, commonly used galvanized. If necessary, external galvanized layer paint protection treatment.
(1) generating capacity comparison: magnet synchronous technology of its units wide speed range, at low wind power generation has certain advantages, but its full power frequency characteristics of wind speed leads to increase its power generation capacity advantage will cause the inverter loss rapidly increases.
(2) Cost Comparison: permanent magnet synchronous technology, while reducing or eliminating the gearbox cost, but its generator and full-power converter technology is more expensive than in the double-fed.
(3) THD:. Permanent magnet synchronous technology used in its full power conversion system THD is very high, you must use the harmonic filter. The double-fed unit in THD can be controlled under the former.