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

A technology for wind turbines and control methods, which is applied in the control of wind turbines, engine control, wind turbines, etc., can solve the problems of wind turbine damage, mechanical stress, fatigue, etc., and achieve reduced fatigue, full functions, and low power consumption. Effect

Active Publication Date: 2017-06-20
NANJING UNIV OF INFORMATION SCI & TECH
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  • Application Information

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 a

Method used

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

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Embodiment Construction

[0055] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific preferred embodiments.

[0056] Such as figure 1 As shown in Fig. 1, a variable speed and pitch control system for a small wind turbine for teaching, including a wind turbine information collection device, a pitch controller, a storage battery, and a pitch actuator.

[0057] The above-mentioned pitch controller is preferably a digital signal processor DSP, which is small in size, low in power consumption, fast in operation speed, strong in data processing capability, and can realize fuzzy control algorithms.

[0058] The above-mentioned battery can supply power to the servo motors in the pitch controller and all pitch actuators.

[0059] The wind power generator information collection device includes a wind speed information collection component, a pitch angle information collection component and a rotational speed information collection component....

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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, ...

Claims

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Application Information

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IPC IPC(8): F03D7/04
CPCF03D7/0224F03D7/044F03D7/046F03D7/047F05B2270/32F05B2270/304F05B2270/328Y02A30/00Y02E10/72
Inventor 贾周余莉刘德陈炜峰刘锐
Owner NANJING UNIV OF INFORMATION SCI & TECH
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