Stable wind driven generating device under air pressure/ hydraulic hybrid control

Abstract

The invention relates to a stable wind driven generating device under air pressure/ hydraulic hybrid control. The device comprises a wind energy input system, a wind energy conversion system, an electricity generating system and a control system, wherein the wind energy input system, the wind energy conversion system and the electricity generating system are sequentially connected through couplings; the wind energy input system mainly comprises a wind power machine, a coupling and a hydraulic continuously variable transmission; the wind energy conversion system mainly comprises an air compressor, a pneumatic valve island, an air storage tank and an air motor and is used for completing energy storage and release; the electricity generating system comprises a coupling and a generator; and the control system is composed of a wind speed sensor, an input end rotation speed sensor, an air storage tank sensor, an output end rotation speed sensor, an output end torque sensor and a system controller. According to the changes of wind conditions, the stable wind driven generating device stores energy when the wind speed is high and releases energy when the wind speed is low so that the air motor is ensured to obtain continuous and stable rotation speed, the generator is not influenced by the changes of the environment, therefore the shortage of the traditional wind driven generating technology is overcome.

Description

technical field [0001] The invention belongs to a wind power generation system, and relates to a wind power stable power generation device with pneumatic / hydraulic hybrid control. technical background [0002] Wind energy is a kind of non-polluting energy. The development of wind energy has attracted more and more attention from all over the world, and the technology of wind power generation has achieved rapid development. However, due to the intermittent nature of the wind, the unstable output of wind turbines has a great impact on grid-connected power generation. Stable power generation is one of the key difficulties in wind power generation technology. [0003] In the existing wind power generation technology, the windward angle of the blades of the wind turbine is adjusted by changing the pitch, and the wind energy utilization rate is changed to stabilize the system. However, the design of the variable pitch system is complex, the utilization rate of wind energy is not ...

AI Technical Summary

Problems solved by technology

However, the design of the pitch control system is complicated, the wind energy utilization rate is not high, and it is greatly affected by the wind speed.

[0004] Chinese patent application number: 2006100203514, name: wind power generation system with continuous and stable power supply. The conversion mechanism delivers continuous and stable wind power, but the design of the system is simple, and there is no specific control device to adjust the energy storage

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