Optimal rotating speed tracking control method for wind driven generator

• Main Authors: YU FENGWEI, SUN HANBING, LIU WEIJIE, WANG KAI, JING FENGMEI
• Format: Patent
• Language: Chinese; English
• Published: 20.11.2020
• 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 relates to an optimal rotating speed tracking control method for a wind driven generator, and belongs to the technical field of control. The optimal rotating speed tracking control method aims to solve the problem of low wind energy capture efficiency of the wind driven generator in a low-wind-speed area. The method comprises the steps that firstly, a kinetic equation of a wind powergeneration system is established for the wind power generation system; secondly, the wheel rotating speed is tracked, an error variable e of the wind wheel rotating speed is expected to meet the condition that e=omega-omega, and constraint is carried out, wherein is e(t) is larger than P(t) and smaller than P(t), and then the error variable is converted; and thirdly a Lyapunov function is selected, the Lyapunov function V is derived from the time t based on the converted error epsilon and the corresponding derivative, finally a preset performance controller of the wind driven generator is obtained, and control is car