Low-wind-speed horizontal-axis wind turbine and control method thereof

Abstract

The invention relates to a low-wind-speed horizontal-axis wind turbine and a control method thereof, and belongs to the field of wind electricity. The wind turbine comprises a stator, a rotor, an electromagnetic system, a shell, an upper end bearing, a lower end bearing, a load-bearing support, a rotating shaft, a wind collection driving system and an electromagnetic control system. The stator comprises a stator iron core and a three-phase winding and is fixed to the shell; the rotor comprises a rotor core and a permanent magnet, is positioned on the inner side of the stator in the radial direction, and is fixed to the rotating shaft; the electromagnetic system comprises a permanent magnet and an electromagnet which are oppositely placed vertically in the axial direction; the wind collection driving system comprises a transverse support and blades, and the transverse support is fixed to the rotating shaft; and the electromagnetic control system acquires an exciting current set value ofthe electromagnet through the difference between an axial resultant force set value and an axial resultant force real-time measurement value, thus, rotating damping is controlled, and stable power generation of an engine is ensured. The low-wind-speed horizontal-axis wind turbine is simple in structure, simple and convenient to control, convenient to mount and maintain and high in wind energy utilization rate; and low-wind-speed starting and high-power output can be realized.

Description

technical field [0001] The invention relates to a wind power generator, in particular to a low wind speed vertical axis wind power generator and a control method thereof, belonging to the field of wind power. Background technique [0002] At present, the mainstream products of high-power wind turbines are horizontal axis wind turbines. However, horizontal axis wind turbines have inherent defects such as needing yaw to face the wind, low utilization rate of wind energy, complex and difficult control, unchanged installation, and high cost, which affect their healthy development. [0003] The vertical-axis wind turbine can overcome the above defects. It does not need to face the wind, and has the advantages of high utilization rate of wind energy, simple control, and easy installation. It has been applied in vertical-axis wind turbines with small and medium power levels. [0004] However, the power level of existing vertical axis wind turbines is not high, and the newly develo...

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Problems solved by technology

[0004] However, the power level of existing vertical axis wind turbines is not high, and the newly developed magnetic levitation vertical axis wind turbines have complex structures, difficult control, and small wind collection area, which limits the utilization of wind energy, making the generators bulky, low in power, and high in cost.

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