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The reliability of frequency converters is a major concern for wind turbines. ChapDrive AS has built and tested a hydraulic drive train for variable speed wind turbines which includes a synchronous generator that is connected to the grid without the use of a frequency converter. The hydraulic drive train consists of a hydraulic pump, a variable displacement hydraulic motor, and a synchronous generator,...
Erosion of hydro turbine components through sand laden river water is one of the biggest problems in the Himalayan region. This problem exists for all kinds of turbines. Apart from erosion of buckets, erosion was also observed in nozzle of the Pelton turbines due to sand particles and such problem was observed in 22MW Chilime Hydropower Plant in Nepal. Detailed studies were conducted and erosion analysis...
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