Method for improving operation stability of mechanical transmission chain of direct-drive wind turbine generator

A technology of mechanical transmission and wind turbines, applied in the direction of controlling generators, electrical components, control systems, etc., can solve problems such as slow response of mechanical actuators, oscillation of active power, and influence on power quality, so as to achieve rapid action and reduce the degree of distortion , the effect of prolonging the service life
CN103457528AActive Publication Date: 2013-12-18STATE GRID CORP OF CHINA +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
STATE GRID CORP OF CHINA
Publication Date
2013-12-18

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Abstract

The invention provides a method for improving operation stability of a mechanical transmission chain of a direct-drive wind turbine generator. A data collecting card collects an operation variable X of the direct-drive wind turbine generator in real time. The method comprises the specific steps that 1, a mechanical transmission chain stabilization system is set according to the operation variable X and mechanical characteristics of the mechanical transmission chain; 2, the mechanical transmission chain stabilization system carries out filtering processing on the operation variable X; 3, the mechanical transmission chain stabilization system carries out dynamic compensation on a voltage reference value of the direct current capacitor end of a converter of the direct-drive wind turbine generator. Compared with the prior art, the method is simple in operation and easy to achieve. Mechanical transmission chain vibration of the direct-drive wind turbine generator caused by rotation speed changes can be quickly relieved, and the influence on unit output active power and power grid electric energy quality is little.
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Description

technical field

[0001] The invention relates to a method for improving the operation stability of a mechanical transmission chain, in particular to a method for improving the operation stability of the mechanical transmission chain of a direct drive wind turbine. Background technique

[0002] In recent years, variable-speed constant-frequency wind power generation technology has become a research hotspot in the field of new energy power generation; compared with constant-speed constant-frequency wind turbines, variable-speed constant-frequency wind turbines can The maximum wind energy capture can be realized in the interior, so that the utilization rate of wind energy can be greatly improved. The current mainstream variable-speed constant-frequency wind turbines include double-fed wind turbines based on doubly-fed asynchronous generators and direct-drive wind turbines based on synchronous generators;

[0003] The direct-drive wind turbine is directly connected to the power ...

Claims

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