![]() At least 62.9% of all failure causes are internal engineering related failure modes while the remainder are due to external effects, mostly weather related.Above: wind turbine component failure rates and downtime. Many studies have looked into the reliability of wind turbine components, and although they rely on data from old turbines, there are some key trends that show where the problem areas. What parts of a wind turbine fail the most? In extreme cases, a wind turbine can catch fire, with disastrous consequences. Also, any repair or replacement of large components often requires the expensive rental of cranes and other equipment. When wind turbine components fail, they can cause unscheduled stoppages, which for the operator means unscheduled service at higher rates and repair costs, potentially void the manufacturer’s warranty, not meet peak electricity demand, and lost revenue. What happens if a wind turbine is poorly maintained? Offshore Towers – same as onshore, but with more complex foundations. ![]() Onshore Towers – houses computer controls, power cables, built in sections and bolted together.The Turbine Blade – catches the wind to move the rotor.Hub –blades are bolted in, pitched and attached to the rotor.The Nacelle – houses the gearbox and generator.The image above shows the main sections of a wind turbine
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