A WT is a complex machine comprised of multiple mechanical and electrical subsystems, including the main bearing, blades, gear box, and generator, among others. The main bearing is a key subsystem that assists the conversion of wind kinetic energy into mechanical energy. The reliability of the main bearing degrades over time due to wear out of its rolling bolts, and cracks of inner and outer rings
A WT is a complex machine comprised of multiple mechanical and electrical subsystems, including the main bearing, blades, gear box, and generator, among others. The main bearing is a key subsystem that assists the conversion of wind kinetic energy into mechanical energy. The reliability of the main bearing degrades over time due to wear out of its rolling bolts, and cracks of inner and outer rings
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Question
A WT is a complex machine comprised of multiple
subsystems, including the main bearing, blades, gear box, and generator, among
others. The main bearing is a key subsystem that assists the conversion of wind
kinetic energy into mechanical energy. The reliability of the main bearing degrades
over time due to wear out of its rolling bolts, and cracks of inner and outer rings
races resulted from ball rotations and vibrations. The field data shows that the
hazard rate function of the main bearing can be modeled as h (t) = 0.002
failures/year
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