Wind power generation system having flywheel and one-pole dc magnetic driver

Abstract

The invention relates to a wind power generation system. According to the wind power generation system, flywheels are taken as energy storage devices, a one-pole dc magnetic driver (HET) is taken as flywheel energy transmission equipment, the stable power generation function is realized, and energy transmission advantages of the HET perform; a vertical flexible flywheel and a suspension type flexible flywheel are further employed, problems of a large-mass flywheel and a bearing are solved. HET speed change transmission is employed between the flywheel and a generator to greatly improve wind energy capture efficiency. Three schemes for energy transmission among a wind wheel, the generator and the flywheel, the first scheme is a no-HET scheme between the wind wheel and the generator, namely, an energy storage device and energy transmission equipment thereof are added to a routine wind power system in the prior art, the second scheme is an independent HET scheme between the wind wheel and the generator, the third scheme is a scheme through which the wind wheel, the generator and the flywheel are respectively connected with one HET half matching part.

Description

Technical field [0001] The invention relates to a wind power generation system, in particular to a wind power generation system with an energy storage device. Background technique [0002] Wind power is recognized as a green energy with broad prospects. The current technology has been successfully applied for a long time, and the economic competitiveness of the wind power system itself is constantly improving. However, from the overall perspective of the power grid, there are still the following problems in terms of comprehensive indicators: due to the great instability and randomness of the wind speed, the wind power obtained by the wind wheel is always fluctuating in a large range, and there is no energy storage The power generation of the installed wind power generation system is very unstable, and the installed capacity of wind turbines is generally not regarded as a stable and reliable power generation capacity in the power grid. , due to the instability and unplanned ...

AI Technical Summary

Problems solved by technology

However, from the overall perspective of the power grid, there are still the following problems in terms of comprehensive indicators: due to the great instability and randomness of the wind speed, the wind power obtained by the wind wheel is always fluctuating in a large range, and there is no energy storage The power generation of the installed wind power generation system is very unstable, and the installed capacity of wind turbines is generally not regarded as a stable and reliable power generation capacity in the power grid. , due to the instability and unplanned nature of wind power generation, it is very difficult for the grid to accommodate wind power, and it is necessary to increase sufficient peak-shaving supporting facilities, including peak-shaving emergency generator sets, pumped storage power stations, etc.; wind power instability is also Decrease the power quality and increase the instability of the power grid; in addition, in order to fully absorb the wind energy under all wind conditions, the rated capacity of the wind power system is designed to be very large, and the design/rated wind speed corresponding to the rated power is much higher than the annual wind speed. The average wind speed and the annual average power only account for about 19% of the rated power, and the effective utilization rate of the equipment capacity is very low

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