Electronic power variation, speed variation wind power generator

Abstract

The invention relates to a generator, in particular to an electronic variable power and variable speed wind power generator, which changes the power according to the wind power. The wind power generator comprises the generator, a main shaft, a shaft coupling, a rectification device, a sensor, and a plurality of generator units, wherein, the main shaft of each generator unit is connected by the shaft coupling, each generator unit is provided with the rectification device, and each rectification device is connected with a reversal relay; and the end of the generator is provided with the sensor. The invention replaces the original given power and given voltage generator by the electronic variable power and variable speed wind power generator which is applicable to the areas with changing wind speed, and more suitable for use at sea, and has the advantages of long on-line time, high wind energy utilization rate, less additional equipments, saving investment, long use life, simple operation and convenient use.

Description

technical field [0001] The invention relates to a generator, in particular to an electronically variable power and variable speed wind power generator that changes power according to the wind force. Background technique [0002] Wind power is one of the current green energy sources for energy saving and emission reduction. At present, most of the wind turbines in production and operation in our country are products imported from foreign equipment, foreign technology or Sino-foreign joint ventures. Most of the equipment produced in the early stage was fixed propeller, constant speed gearbox, and constant power generator. This product cannot adjust the speed when the wind speed is variable. When the wind is strong, the wind generator will overspeed, causing the blades to break and the generator to be damaged. Burned out; the later products adopt blade tip reverse speed regulation, its structure is complicated, which increases the load on the blade and reduces the life of the ...

AI Technical Summary

Problems solved by technology

Most of the equipment produced in the early stage was fixed propeller, constant speed gearbox, and constant power generator. This product cannot adjust the speed when the wind speed is variable. When the wind is strong, the wind generator will overspeed, causing the blades to break and the generator to be damaged. Burned out; later products adopt blade tip reverse speed regulation, and its structure is complicated, which increases blade load and reduces blade life; current wind turbines use pitch to adjust speed, but still use constant speed increase Although the gearbox and constant power generator are better than the aforementioned wind generators, they are not suitable for strong wind areas with variable wind speeds. Although the direct drive wind generators do not have gearboxes, they also use variable pitch speed regulation. However, the generator adopts a low-speed constant power and constant voltage design, and is not suitable for strong wind areas with variable wind speeds.

Therefore, the existing wind turbines have the disadvantages that they cannot be connected to the grid at low speeds, cannot generate electricity at high speeds, and are only connected to the grid at medium speeds, but the time to connect to the grid is short, and they cannot make full use of wind energy.

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