Case Study on Wind Turbine Gearbox Assignment

Added on - 27 Dec 2019

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Investigation of TransientLoad in Gearbox
TABLE OF CONTENTSCHAPTER - LITERATURE REVIEW...........................................................................................4REFERENCES..............................................................................................................................122
Illustration IndexIllustration 1: Gearbox structure......................................................................................................4Illustration 2: Wind turbine gearbox................................................................................................5Illustration 3: Emergency stop rotor speed......................................................................................6Illustration 4: Emergency stop gear input........................................................................................7Illustration 5: Emergency stop damage accumulation.....................................................................83
CHAPTER - LITERATURE REVIEWMechanism of transient loads in gear boxPower is a form of energy which is useful in driving the entire load over a machine ormachinery components.Antoniadou and et. al., (2015) stated that power trains in wind turbineshave an expected service life of about 20 years. In this huge life span the diversity of dynamicloads belongs to a wide spectrum. In order to understand the factors which lead to failure ofgearbox in power transmission systems, it is important to get quick insight about the mechanismof transient loads (Walker and Zhang, 2013). The failure of gearboxes is a common phenomenonwhich has been a major concern for the industries that have been working in the wind turbinemanufacturing and operation. According toZhao and et. al., (2014), E-stops or emergency stopsare considered as the most frequent process which affects the functioning of gearbox intransmission systems.Transmission systems are of different types. These include automatic, semi-automaticand continuously variable transmissions. Despite of their complexity in structural design, theusage principles are very easy and individuals can grasp the entire working procedure quite4Illustration1: Gearbox structure
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