Wind turbine type

According to the characteristics of the fixed-pitch moment stall fan and the variable-speed constant-frequency blade moment wind turbine, the installed motors in China are generally divided into two categories:

1, asynchronous type

(1) Cage-type asynchronous generator; power is 600/125kW 750kW 800kW 12500kW The stator transmits 50Hz alternating current with different power to the grid; (2) Wound-type doubly-fed induction generator; The power is 1500kW The stator transmits 50Hz AC to the grid, rotor It is controlled by the inverter and indirectly delivers active or reactive power to the grid.

2, synchronous type

(1) Permanent Magnet Synchronous Generator; Power: 750kW 1200kW 1500kW Magnetic field generated by permanent magnets, the stator output is supplied with 50Hz AC power to the grid after full power rectification and inversion (2) Electrical excitation synchronous generator; DC externally connected to the rotor The current generates a magnetic field, and the stator output is transmitted to the power grid with 50 Hz alternating current after full power rectification and inversion. According to different types of blades, existing wind turbines are divided into the following two types:

3, horizontal axis

The world’s most used form currently has a maximum power of about 5MW.

4, vertical axis

A new type of wind turbine that was invented by China, Japan, and Europe at the beginning of the 21st century is different from the earliest vertical axis wind turbine (Darieu type). The efficiency is higher than that of the horizontal axis wind turbine, without noise and steering. Institutions are simple to maintain. Has become the first choice for small wind generators in Europe and the United States market. The world’s current maximum power is a 50-kilowatt vertical-axis wind turbine produced by Shanghai Dies Electronic Equipment Co., Ltd. (MUCE). The maximum power in Japan is 30 kilowatts, and the power produced in the United Kingdom and the United States is between 1 and 10 kilowatts.

Recently, many companies at home and abroad have proposed plans for the construction of ultra-large vertical axis wind turbines (10MW). After the plan is implemented, the cost will be lower than that of current wind turbines and will gradually replace horizontal axis wind turbines. , to become the main force of the world's new energy!