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Wind turbine vibration and noise suppression method and device

A technology for wind generators and noise suppression, which is applied in the direction of wind turbines, wind motor combinations, wind power generation, etc., can solve the problems of increasing the complexity and manufacturing cost of the generator manufacturing process, reducing the power density and energy index of the generator, etc. Achieve the effect of increasing complexity and manufacturing cost, achieving vibration and noise

Active Publication Date: 2018-10-23
BEIJING GOLDWIND SCI & CREATION WINDPOWER EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In the process of realizing the vibration and noise suppression of the above-mentioned generator, the inventor found at least the following problems in the prior art: the change of the mechanical structure and electromagnetic design of the generator, on the one hand, reduces the performance of the generator such as power density and force-energy index , on the other hand, it increases the complexity and manufacturing cost of the generator manufacturing process

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  • Wind turbine vibration and noise suppression method and device
  • Wind turbine vibration and noise suppression method and device
  • Wind turbine vibration and noise suppression method and device

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Effect test

Embodiment 1

[0025] figure 1 It is a schematic flow chart of an embodiment of the wind generator vibration and noise suppression method provided by the present invention. Such as figure 1 As shown, the wind turbine vibration and noise suppression method in this embodiment may specifically include:

[0026] S101, according to the given value P of the electromagnetic active power of the generator e_ref And the frequency f of the generator is calculated to obtain the given value of the generator field weakening control parameters.

[0027] S102. Control the generator according to the given value of the field weakening control parameter of the generator.

[0028] Specifically, the field weakening control parameters of the generator in this embodiment may be specifically determined according to the control mode of the generator. For example, when current vector control is performed on the generator, the field weakening control parameter of the generator in this embodiment is the given value...

Embodiment 2

[0031] figure 2 It is a schematic flow chart of another embodiment of the wind generator vibration and noise suppression method provided by the present invention. Such as figure 2 As shown, the wind power generator vibration and noise suppression method of the present embodiment provides figure 1 A specific implementation of the wind generator vibration and noise suppression method of the shown embodiment (the situation of current vector control of the generator), the wind turbine vibration and noise suppression method of the present embodiment may specifically include:

[0032] S201, according to the given value P of the electromagnetic active power of the generator e_ref Calculated with the frequency f of the generator to obtain the given value I of the direct axis current of the generator d_ref and the given value I of the generator quadrature axis current q_ref .

[0033] specific, image 3 for figure 2 In the shown embodiment, it is a schematic flowchart of calc...

Embodiment 3

[0056] Figure 4 It is a schematic flow chart of another embodiment of the wind generator vibration and noise suppression method provided by the present invention. Such as Figure 4 As shown, the wind power generator vibration and noise suppression method of the present embodiment provides figure 1 Another specific implementation of the wind generator vibration and noise suppression method of the shown embodiment (the situation of direct torque control of the generator), the wind turbine vibration and noise suppression method of this embodiment may specifically include:

[0057] S401, according to the given value P of the electromagnetic active power of the generator e_ref Calculate the given value Ψ of the flux linkage of the generator with the frequency f of the generator f_ref and the given value T of the generator electromagnetic torque e_ref .

[0058] specific, Figure 5 for Figure 4 In the shown embodiment, it is a schematic flowchart of calculating a given valu...

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Abstract

The invention provides a method and device for suppressing vibration and noise of a wind power generator. The method includes: calculating and obtaining a given value of a generator field weakening control parameter according to a given value of the electromagnetic active power of the generator and a frequency of the generator; controlling the generator according to the given value of the generator field weakening control parameter . The vibration and noise suppression method and device of the wind power generator provided by the invention reduce the magnetic load of the generator through the field weakening control, and realize the suppression of the vibration and noise of the generator. Since there is no need to change the mechanical structure and electromagnetic design of the generator, it does not affect the performance of the generator such as power density and force energy index, and does not increase the complexity and manufacturing cost of the generator manufacturing process.

Description

technical field [0001] The invention relates to the technical field of wind power, in particular to a method and device for suppressing vibration and noise of a wind power generator. Background technique [0002] With the development and popularization of wind power generation technology, the capacity of wind power generators is continuously increasing, and the vibration and noise problems in the operation of wind power generators cannot be ignored more and more, which has become an urgent problem to be solved in the development of wind power industry. [0003] Wind turbine is an important device to realize the conversion of mechanical energy to electrical energy. There are electromagnetic forces of various frequencies such as the fundamental wave and harmonic frequency, the cogging frequency and its multiplier in the wind turbine, and the mechanical structure mode of the stator and rotor of the wind turbine is also very complex. When the order and frequency of the force wa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P9/14H02P101/15
CPCH02P9/14H02P21/00H02P21/05H02P2101/15H02P21/22F05B2220/7064F05B2260/96H02P21/0089H02P21/10Y02E10/72F03D9/25
Inventor 刘勇张虓赫赵祥
Owner BEIJING GOLDWIND SCI & CREATION WINDPOWER EQUIP CO LTD
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