Wind generating set

Abstract

The invention relates to a wind generating set. The wind generating set comprises an impeller (1), a main shaft (2), a gearbox (3), and a coupler (4), a generator (6) and a main machine frame (7) used as a supporting piece. The impeller (1) drives the main shaft (2) to rotate. The gearbox (3) is installed on a transmission chain of the main shaft (2) and is connected with the generator (6) through the coupler (4). The wind generating set further comprises a control device (50) and a speed rotation measuring device (9). An inner gear ring of a gear transmission mechanism in the gearbox (3) is connected with the control device (50) through an auxiliary transmission device. When the rotation speed measuring device (9) detects that the rotation speed of the main shaft (2) changes, the control device (50) controls the inner gear ring of the gear transmission mechanism to change the rotation speed and/or the rotation direction according to the change of the rotation speed of a sun gear in the gear transmission mechanism through the auxiliary transmission device, so that the transmission ratio of the gear transmission mechanism is adjusted; in this way, the application area of a draught fan is expanded, and the overall cost of the wind generating set is reduced.

Description

technical field [0001] The invention relates to a novel wind power generator set, in particular to a wind power generator set capable of reducing the cut-in wind speed and increasing the cut-out wind speed, and belongs to the technical field of wind power generation. Background technique [0002] The existing mainstream wind turbine components are divided into doubly-fed type, direct-drive type and full-power type. [0003] Double-fed models have a common shortcoming, that is, the cut-in wind speed is still relatively high. When the cut-in wind speed is lower than the cut-in wind speed threshold, even if the torque of the wind on the impeller is sufficient to drive the impeller to rotate, its rotation must be restricted, because the double-fed fan’s If the actual speed of the rotor is too much smaller than the rated speed, the frequency converter (sometimes called the inverter) of the doubly-fed wind turbine will be damaged. In the same way, only when the wind speed does no...

AI Technical Summary

Problems solved by technology

[0008] Existing doubly-fed wind turbines cut in at high wind speeds, the wind turbines cannot start generating power at low wind speeds, and cut out too early at high wind speeds, resulting in the inability to make full use of wind resources;

[0009] The inverters of existing direct-drive models and full-power models of wind turbines have large power and high cost;

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