Small wind power generator variable-rate variable-pitch control method and system for teaching

Abstract

The invention relates to a small wind power generator variable-rate variable-pitch control method and system for teaching. The method includes the steps that the rotating speed of a pitch control is measured; the variable-pitch angle is calculated; a fuzzy algorithm is adopted for calculating the variable-pitch rate based on wind speed change prediction; and a variable-pitch execution mechanism drives blades to achieve variable pitch. The control system comprises a wind power generator information collecting device, a variable-pitch controller and the variable-pitch execution mechanism. According to the small wind power generator variable-rate variable-pitch control method and system, the fuzzy algorithm is adopted for forecasting the wind speed changes and calculating the best variable-pitch rate, the blades are driven by a servo motor to rapidly rotate to specific positions, and the technology is excellent and reliable. On the premise that an existing wind power generator structure is not changed and absorption of the blades on wind energy is not influenced, the biggest wind energy conversion efficiency can be achieved according to the wind speed information in the manner that the blades are driven by the servo motor to rotate to the specific position rapidly.

Description

technical field [0001] The invention relates to the technical field of wind power generation for teaching and scientific research, in particular to a variable speed and pitch control method and control system for a small wind power generator for teaching. Background technique [0002] With the rapid development of society, people's demand for renewable energy is increasingly urgent, and the development of wind power is currently hot. However, due to the intermittent and unstable characteristics of wind energy, which is contrary to the stable power output that people expect, the control technology of wind turbines has been widely valued. The pitch control method can effectively adjust the output power of the wind turbine, and achieve the maximum wind energy conversion efficiency by adjusting the pitch angle of the blades. [0003] Domestic and foreign scientific and technical personnel have carried out a lot of research work on the control technology of large wind turbines, ...

AI Technical Summary

Problems solved by technology

[0004] 1. The traditional fixed-rate pitch control method is often unable to quickly respond to wind speed changes to achieve the purpose of pitch change when the wind speed changes in a wide range, thus causing potential damage and mechanical stress fatigue to the wind turbine

[0005] 2. Pitch-variable fans only appear on large-scale fans, and small and medium-sized fans, especially small fans for teaching and scientific research, have not yet been involved

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