Attack angle following type megawatt vertical axis wind driven generator

Abstract

The invention provides an attack angle following type megawatt vertical axis wind driven generator which comprises a power conversion device, an accelerating box, a generator, electromotors, a spindle, a sleeve, cantilever crossbeams, and a sail vane; the sleeve is sheathed outside the spindle; the spindle and the sleeve are connected by a bearing; the cantilever crossbeams are fixed on the sleeve; one end of the cantilever crossbeam is provided with a transverse sail device; a sail vane self-rotating device is arranged on the transverse sail device; the top end of the spindle is provided with a lightning rod; a wind indicator is connected with an electronic controller; the electronic controller controls three electromotors on each cantilever crossbeam; the electromotors respectively control the transverse sail device to move; meanwhile, the electromotors can adjust the angle of the sail vane, and control the winding and unwinding of the sail vane to lead the generator to be always under a state capable of generating maximum torque. The start wind speed can be effectively lowered, and the wind energy utilization is improved.

Description

technical field [0001] The invention relates to a vertical axis wind power generator, in particular to a horizontal sail device, a sail blade self-rotating device and a sail blade unwinding device applied to a vertical axis wind power generator. Background technique [0002] A wind turbine, also known as a windmill, is an energy conversion device that converts wind energy into mechanical energy, electrical energy or thermal energy. According to the difference of the wind rotor axis, it can be divided into horizontal axis wind turbine and vertical axis wind turbine. The energy drive chain (ie, wind wheel, main shaft, gearbox, generator) is in the horizontal direction, which is called a horizontal axis wind turbine. The energy drive chain is vertically directed, which is called a vertical axis wind turbine. Vertical axis wind turbines can be divided into drag type and lift type. [0003] In the prior art, there are many public reports about generating devices utilizing wind...

AI Technical Summary

Problems solved by technology

However, the wind rotor of a general vertical axis wind turbine adopts a lift type, the shape of the blade is complex, the manufacturing cost is high, the axis of the blade is parallel to the vertical axis, and the rotation of the wind rotor has nothing to do with the wind direction, so it does not need windward device

Since the angle between the blade and the cantilever bracket is fixed, the magnitude and direction of the driving torque generated by the blade is constantly changing, and a large resistance torque will also be generated at the same time, so the starting wind speed of the existing vertical axis wind turbine is relatively low. Large and low utilization rate of wind energy, poor environmental adaptability

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