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Method for controlling frequency stabilization of permanent magnet wind-driven generator capable of adapting to changing torque

A technology of wind generator and control method, applied in the direction of frequency and voltage control of generator, can solve the problems of high price and complex equipment structure, and achieve the effect of stabilizing voltage and frequency

Inactive Publication Date: 2009-12-02
BEIJING INST FOR FRONTIER SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although this method can stabilize the voltage and frequency of the generator, its equipment structure is complex and expensive, which accounts for a considerable proportion of the generator set cost.

Method used

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  • Method for controlling frequency stabilization of permanent magnet wind-driven generator capable of adapting to changing torque
  • Method for controlling frequency stabilization of permanent magnet wind-driven generator capable of adapting to changing torque
  • Method for controlling frequency stabilization of permanent magnet wind-driven generator capable of adapting to changing torque

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Embodiment Construction

[0025] The above objects, features, advantages and preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0026] figure 1 A schematic diagram of the overall structure of the array-type frequency-stabilized permanent magnet wind turbine is shown. figure 2 It shows the structural schematic diagram of the stator and the rotor of the array type frequency-stabilized permanent magnet wind power generator when the end cover is removed. It can be seen from the above two figures that the array-type frequency-stabilized permanent magnet wind power generator includes a stator 2 and two end covers 4 respectively installed at both ends thereof. The stator 2 and the two end covers 4 form a cavity, on which A motor shaft 1 coaxially disposed with a stator 2 protrudes outward from the cavity. A rotor 3 is also installed on the motor shaft 1 , and the rotor 3 is sleeved in the stator 2 .

[0027] In this embodiment, a...

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Abstract

The invention discloses a method for controlling frequency stabilization of a permanent magnet wind-driven generator capable of adapting to changing torque. The generator directly obtains a stable voltage frequency in the process of converting mechanical energy into electric energy by the method. The method obtains the voltage frequency of the generator by a frequency stabilization control system, and controls the opening and closing of a stator winding switch by an ADRC according to difference between the voltage frequency of the generator and a rated value to further control the number of the windings connected and adjust the rotating speed of the generator so as to adjust the voltage frequency of the generator and keep the voltage frequency of the generator stable.

Description

technical field [0001] The invention relates to a control method for a wind power generator, in particular to a frequency stabilization control method capable of stabilizing the output voltage frequency. Background technique [0002] In recent years, under the general trend of saving energy and protecting the environment, the wind power industry has developed rapidly. As we all know, the core component of wind power generation, that is, the wind generator is driven by the wind to rotate the blades, and then drive the rotor to rotate, so that the coil cuts the magnetic force lines to generate current. When the number of turns of the winding coil and the strength of the magnetic field are fixed, the voltage frequency of the wind turbine is proportional to the rotational speed of the rotor. Therefore, as long as the rotational speed is constant, the voltage frequency of the wind turbine can remain constant. However, what often happens is that as the wind energy changes, its d...

Claims

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Application Information

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IPC IPC(8): H02P9/44
Inventor 毕大川陈泽森
Owner BEIJING INST FOR FRONTIER SCI
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