Title:
TORQUE MODE SWITCH CONTROL METHOD FOR MAINTAINING RATED OUTPUT OF WIND TURBINE AND SYSTEM THEREFOR
Document Type and Number:
WIPO Patent Application WO/2017/135657
Kind Code:
A1
Abstract:
The present invention relates to a torque mode switch control system for maintaining a rated output of a wind turbine and, more specifically, to a torque mode switch control system and method for a wind turbine, the system comprising: a rotation speed measuring unit for measuring the rotation speed of a generator in real time; a pitch controller for calculating the commanded pitch angle of a blade in real time; a pitch angle limiting device unit for determining the actual pitch angle of the blade by limiting the commanded pitch angle; a torque mode switch for selecting a mode value on the basis of the rotation speed measured by the rotation speed measuring unit and the pitch angle determined by the pitch controller and the pitch angle limiting device unit; and a torque controller for controlling the torque of the generator according to the mode value selected by the torque mode switch, thereby enabling a torque chattering problem, which is caused by the torque mode switch when a wind speed suddenly lowers from a level greater than or equal to a rated wind speed to a level less than or equal to the rated wind speed in the controlling of the torque of the wind turbine, to be prevented, and enabling the torque controller to be stably operated.
Inventors:
LIM CHAE WOOK (KR)
Application Number:
PCT/KR2017/001044
Publication Date:
August 10, 2017
Filing Date:
February 01, 2017
Export Citation:
Assignee:
HANBAT NAT UNIV INDUSTRY-ACADEMIC COOP FOUND (KR)
International Classes:
F03D7/02; F03D9/25; H02P9/04
Foreign References:
| KR20110028256A | 2011-03-17 | |||
| KR20120018284A | 2012-03-02 | |||
| KR100667232B1 | 2007-01-17 |
Other References:
RHO , J-H: "Download citation A Sensitivity and Performance Analysis for Torque Mode Switching on 2MW Direct Drive Wind Turbine Generator", THE TRANSACTIONS OF THE KOREAN INSTITUTE OF ELECTRICAL ENGINEERS, vol. 63, no. 10, 1 October 2014 (2014-10-01), pages 1455 - 1460, XP055600501, ISSN: 1975-8359
Attorney, Agent or Firm:
IPUS PATENT & LAW FIRM (KR)
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