TAILIEUCHUNG - Fundamental and Advanced Topics in Wind Power Part 8

Tham khảo tài liệu 'fundamental and advanced topics in wind power part 8', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Wind Turbine Gearbox Technologies 199 Fig. 6. Torque splitting between four electrical generators on the MW Clipper Liberty Image Clipper Windpower . Using its patented Quantum Drive Distributed Generation Powertrain the MW Liberty wind turbine uses a multiple-path gearbox design to split the torque from its 89- 99 meter rotor blades evenly between four generators that are operated in parallel. In contrast to a planetary gearing system Clipper utilizes external double helical gears in order to allow for wide faces with their lower deflection sensitivities smaller diameters and reduced manufacturing costs due to lower required tolerances. The gear set for each of the generators is designed in cartridge form so as to allow for replacement without requiring the removal of the gearbox. Additionally if a fault were to develop in one of the generators or cartridged gear sets the production capacity of the wind turbine is reduced by only 25 percent until the problem can be corrected Mikhail Hahlbeck 2006 . After selling 370 turbines in 2006 and 825 in 2007 the company appeared to have recovered from their early quality control problems. Clipper Wind was acquired in December 2010 by United Technologies Corporation. On March 24 2011 Clipper Wind dedicated the first large-scale wind farm on the island of Oahu which consists of 12 MW wind turbines coupled to a 15 MW batter storage system to smooth power output fluctuations. This project was developed by the Boston-based First Wind one of Clipper Windpower s long standing customers. As of early 2011 a total of 375 Clipper Windpower turbines are featured in 17 projects across the US with a cumulative rated power of 938 MW. Torque splitting appears to be a cheaper alternative to the direct-drive solution although it appears that the upper viable limit of torque splitting may lie below that of direct-drive machines. 200 Fundamental and Advanced Topics in Wind Power In addition to Clipper Windpower CWind of Ontario .

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