Variable-pitch robust control method based on UDE for wind generating set

• Main Authors: YANG QINMIN, CHEN JIMING, WANG XUDONG, LU JIANGANG, JIAO XUGUO, LUO QINGSHUN, FAN BO
• Format: Patent
• Language: Chinese; English
• Published: 28.09.2016
• Subjects: BLASTING; HEATING; LIGHTING; MACHINES OR ENGINES FOR LIQUIDS; MECHANICAL ENGINEERING; OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR; PRODUCING MECHANICAL POWER; WEAPONS; WIND MOTORS; WIND, SPRING WEIGHT AND MISCELLANEOUS MOTORS

The invention discloses a variable-pitch robust control method based on a UDE for a wind generating set. The method comprises the steps of creating a dynamic model of wind-driven generators on the basis of unmodeled dynamics and disturbance of the wind generating set; defining dynamic characteristics of regulation errors and expectation errors; rewriting the dynamic model of the wind generating set and obtaining a preliminary expression of a pitch angle controller; arranging a low pass filter for carrying out approximation on non-affine uncertain items and disturbance terms of the dynamic model of the wind-driven generators, substituting the approximation result into the preliminary expression of the pitch angle controller, carrying out Laplace transformation, carrying out inverse Laplace transformation after merging and sorting and obtaining final pitch angle control signals. In the design process, the problem that the design of a non-affine system controller is difficult is solved, the unmodeled dynamics an