Parallel paddle type large-sized wind-driven generator

Abstract

The invention relates to a parallel paddle-type large-scale wind power generation device, which belongs to the technical field of wind power generation. The device consists of an oil pump, a yawing system, a windmill, a high-pressure temporary storage buffer tank, a flow adjusting valve, a hydraulic turbine, a synchronous generator, a control system, a voltage mutual inductor, an oil return tank, a supporting tower and the like. The windmill and the generator of the wind power generation device are arranged respectively; the windmill and the high-pressure oil pump are only arranged on the supporting tower; the wind power generation device accumulates energy through the high-pressure temporary storage buffer tank on the ground, does not need to control the rotational speed of the windmill, can use a plurality of middle-scale windmills in parallel paddle to establish a large-scale wind power generation field, is easy to carry out parallel-network operation, reliable to control the system and stable in operation and only needs one set of a speed regulation system. The wind power generation device solves the problems that the prior wind power generator adopts one windmill to drive one generator, has large size and weight, is uneasy to adjust voltage and frequency, is limited by capacity of a single generator, has small output power, difficulty in parallel-network operation and much management trouble, and the windmill and the supporting tower have high cost, large mounting difficulty and high requirements on a manufacturing technology.

Description

Technical field: [0001] The invention relates to a wind power generation device, in particular to a parallel paddle type large-scale wind power generation device, which belongs to the technical field of wind power generation. Background technique: [0002] The history of the development of human society is closely related to the level of development and utilization of energy. Every development of new energy makes a leap in the development of human economy. In the 21st century, the world's energy structure is also undergoing major changes, namely, from Transformation of fossil energy systems to sustainable energy systems based on renewable energy. Renewable energy includes solar energy, wind energy, biomass energy, geothermal energy, ocean energy, etc., which are inexhaustible. Among the many renewable energy sources, wind power is the fastest-growing, most widely commercialized, and most economically applicable. my country is extremely rich in wind power resources, and wind...

AI Technical Summary

Problems solved by technology

The current wind power generation mostly adopts a structure in which one wind turbine runs with one generator. Generally, an independent control system is used. Due to the large volume after the mechatronics integration, the weight also increases with the increase of the single machine capacity, such as a 600KW wind turbine. The total weight of the nacelle has reached more than 20 tons. It is quite technically difficult to make such a system run well on the wind tower

In addition, the wind power is sometimes intermittent, and the voltage and frequency are also extremely unstable. If a gust of wind blows, the wind wheel will rotate faster and faster, and the system will be blown across. Such power generation quality is of no practical value.

[0004] In order to solve these problems, modern wind turbines have added gearboxes, yaw systems, hydraulic systems, brake systems, and control systems, etc., but this increases both the volume and weight, so the increase in the capacity of a single machine is subject to conditions. my country's wind power industry has encountered many difficulties

Moreover, the current implementation of a windmill driving a generator still has the following disadvantages: 1. Due to the limited capacity of the single machine, the output power is small, the grid-connected operation is difficult, and the management is troublesome.

2. Due to the small capacity of a single unit, it is not easy to form a large-scale power plant

3. The cost of wind turbines and support towers is high, the control is difficult, and the manufacturing technology requirements are high. As a result, my country's large-scale wind turbines are imported from abroad, and the current wind power grid-connected technology is still a difficult problem in the world

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