System and method for inhibiting vibration of direct-driven wind generator set

A technology for wind turbines and generators, applied in the direction of controlling generators, control systems, electrical components, etc., can solve problems such as inability to generate torque, and achieve the effects of suppressing vibration, increasing damping, and achieving practical value and practical significance.
CN101557191AInactive Publication Date: 2009-10-14XINJIANG GOLDWIND SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
XINJIANG GOLDWIND SCI & TECH
Publication Date
2009-10-14
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a system and a method for inhibiting the vibration of a direct-driven wind generator set, pertaining to the field of the control of a million-Watt class direct-driven permanent-magnet wind generating set. The system comprises a flow conversion device and a wind turbine host-controller (WTC), wherein the flow conversion device comprises a convertor, a band-pass filter and a damping controller. The convertor is a full-power convertor, and the rectification process of the convertor is an active rectification method comprising a controllable device IGBT; and rotor field-oriented control (FOC) is adopted. The invention increases the band-pass filter and the damping controller in the flow conversion device so that the damping controller outputs a compensating torque when the generating set vibrates, thereby being capable of effectively reducing the vibration of the generating set and prolonging the service life of the generating set.
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Description

technical field

[0001] The invention relates to a system and method for suppressing the vibration of a direct-drive wind power generating set, and belongs to the control field of a megawatt-level permanent magnet direct-drive wind power generating set. Background technique

[0002] For the direct-drive permanent magnet wind turbine with variable speed and variable pitch, the impeller is directly connected to the generator, and the transmission part of the gearbox is omitted in the middle, which has many advantages such as simple structure and easy maintenance. At present, direct-drive wind turbines use multi-pole synchronous motors, and the output of the motor stator windings is directly connected to the converter, and the converter converts the output voltage or current of the motor into a voltage and Frequency, but mainly due to the following reasons, the fan is prone to vibration:

[0003] (1) The permanent magnet generator has more poles and a larger diameter. Compared ...

Claims

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