As a clean and renewable energy source, wind energy has attracted more and more attention from countries all over the world. It has huge reserves. The global wind energy is about 2.74×109MW, and the available wind energy is 2×107MW, which is 10 times larger than the total amount of water energy that can be developed and used on the earth. The development and utilization of wind energy is a major trend of internationalization. The wind power industry has become another rising industry after IT and other industries. By 2020, wind power can provide 12% of the world's electricity demand, create 1.8 million jobs, and reduce the emissions of sulfur dioxide emissions by more than 10 billion tons globally.

Wind Turbine Types:

According to the output capacity of wind turbines, wind turbines can be divided into small, medium, large, and megawatt series.

1. Small wind turbine refers to a wind turbine with a generator capacity of 0.1~1kw

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2. Medium-sized wind turbine refers to a wind turbine with a generator capacity of 1~100kw

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3. Large-scale wind turbine refers to a wind turbine with a generator capacity of 100~1000kw.

4. Megawatt wind generator refers to a wind generator with a generator capacity of more than 1000kw

(1) Direct-driven Wind Turbine Generators

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(2) Electric excitation wind generator

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(3) Double-fed wind generator

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