Double-fed aerogenerator

Abstract

The invention relates to the field of industrial machineary and specifically relates to a double-fed aerogenerator. The double-fed aerogenerator comprises a wound rotor induction motor, the wound rotor induction motor is connected with a rotor-side inverter, the rotor-side inverter is connected with a network-side inverter through a DC line, the network-side inverter is connected with a power network, the power network and the wound rotor induction motor are connected, when the wound rotor induction motor rotates, energy goes into a rotor loop through the rotor-side inverter, through basic control of the network-side inverter, DC voltages are maintained constant and it is ensured that a power factor absorbed from the power network is 1, the rotor-side inverter is individually controlled, the power factor of the generator is controllable, and reactive power can be provided for the power network so as to adjust voltages of the power network.

Description

technical field [0001] The invention relates to the field of industrial machinery, in particular to a double-fed wind power generator. Background technique [0002] With the impact of factors such as international legislative bodies, environmental issues and the long-term use of fossil fuels, the demand for wind turbines is currently growing rapidly, and the issue of global climate change, which has attracted international attention, has led governments to find ways to increase renewable energy. The proportion in the entire power supply to reduce carbon dioxide emissions, the utility model patent application number is CN200920234581.X, by changing the transmission ratio between the wind blade and the generator to achieve efficient conversion of wind energy, the generator shaft The speed is more than 70 times higher than the speed of the fan blades, which greatly increases the speed of the main shaft of the generator and improves the working efficiency of the generator. Howev...

AI Technical Summary

Problems solved by technology

[0002] With the impact of factors such as international legislative bodies, environmental issues and the long-term use of fossil fuels, the demand for wind turbines is currently growing rapidly, and the issue of global climate change, which has attracted international attention, has led governments to find ways to increase renewable energy. The proportion in the entire power supply to reduce carbon dioxide emissions, the utility model patent application number is CN200920234581.X, by changing the transmission ratio between the wind blade and the generator to achieve efficient conversion of wind energy, the generator shaft The speed is more than 70 times higher than the speed of the fan blades, which greatly increases the speed of the main shaft of the generator and improves the working efficiency of the generator. However, the constant current cannot be guaranteed, the power factor in the grid is unstable, and the voltage of the grid unable to adjust

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