Permanent magnet direct-driven wind turbine generator demagnetization vibration model prediction control method

• Main Authors: LIU WANTAI, ZHOU BIFENG, LUO YIPING, LI ANPING
• Format: Patent
• Language: Chinese; English
• Published: 18.06.2024
• Subjects: CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION

The invention discloses a vibration model prediction control method for a demagnetized rotor of a permanent magnet direct-driven wind driven generator. The method comprises the following steps: according to a rotor dynamics theory, constructing a vibration dynamics model of the demagnetization rotor system of the permanent magnet direct-driven wind power generator; according to actual experience, a demagnetization imbalance magnetic pull empirical function model is constructed, then a demagnetization rotor system observation tracking model is constructed, and on the basis of a Lyapunov stability theory, sufficient conditions for the observation tracking model to effectively observe and track an actual demagnetization rotor vibration dynamic model are obtained; and obtaining a vibration model prediction control scheme of the demagnetizing rotor system through iterative prediction based on the constructed system observation tracking model. Through numerical simulation, it is verified that the system observation