Fan control system adopting variable-structure PID (Proportion Integration Differentiation) variable-propeller control

A control system and variable structure technology, which is applied in the direction of wind turbines, wind turbine control, engines, etc., can solve problems such as imperfect signal acquisition and processing, large fluctuations in the speed of the controlled generator, and influence on power generation efficiency. Superior, stable and reliable performance, good compatibility

Active Publication Date: 2010-12-01
SHANGHAI ELECTRICGROUP CORP
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Problems solved by technology

At present, my country's wind turbines are developing in the direction of large-scale megawatts. As the core technology that directly affects the safe and stable production of megawatts wind turbines, the pitch control algorithm mostly uses the classic PID (proportional-integral-derivative ) control algorithm, which is not perfect for signal acquisition and processing, the algorithm is relatively simple, the controlled generator speed fluctuates greatly, which is not conducive to torque control, and in the case of strong winds and gusts, overspeed faults are prone to cause the fan to stop, affecting power generation efficiency

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  • Fan control system adopting variable-structure PID (Proportion Integration Differentiation) variable-propeller control
  • Fan control system adopting variable-structure PID (Proportion Integration Differentiation) variable-propeller control

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Embodiment Construction

[0027] The present invention will be further described below in conjunction with accompanying drawing.

[0028] The purpose of the pitch control of the present invention is to accurately control the generator speed through the PID adjustment to the speed deviation.

[0029] see figure 1 , the figure shows a fan control system adopting variable structure PID pitch control of the present invention, including a pitch range calculation module 1, a gust protection processing module 2, a speed deviation filtering module 3, and a segmented PID adjustment module 4. Calculation module 5 and output control module 6 of variable pitch speed nonlinear factor, wherein:

[0030] The pitch range calculation module 1 calculates the pitch range according to the average wind speed of N seconds, and N is a positive number. In this embodiment, N is 10, and the pitch range calculation module 1 obtains different The corresponding table of wind speed and pitch angle range, and then apply the Lagran...

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Abstract

The invention discloses a fan control system adopting variable-structure PID variable-propeller control, which comprises a variable-propeller-pitch range computing module, a gust protection processing module, a rotating speed deviation filtering module, a segmented PID regulating module, a variable-propeller-pitch speed nonlinear factor computing module and an output control module. In the invention, the rotating speed of a generator is accurately controlled through the PID regulation for rotating speed deviation, and the fan control system has stable and reliable performance, can effectively improve the output power of a fan and has the advantages of excellent performance, safety and stability.

Description

technical field [0001] The invention relates to the field of variable-pitch wind power generators, in particular to a safe and reliable wind turbine control system with variable-structure PID pitch control applied to variable-pitch wind power generators. Background technique [0002] In recent years, with the rapid growth of my country's energy demand and the concept of sustainable development, wind power has become one of the main ways to obtain green energy, and has received strong support from the state. At present, my country's wind turbines are developing in the direction of large-scale megawatts. As the core technology that directly affects the safe and stable production of megawatts wind turbines, the pitch control algorithm mostly uses the classic PID (proportional-integral-derivative ) control algorithm, which is not perfect for signal acquisition and processing, the algorithm is relatively simple, the controlled generator speed fluctuates greatly, which is not condu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D7/00
CPCY02E10/723Y02E10/72
Inventor 孙佳林尹正兵董祖毅
Owner SHANGHAI ELECTRICGROUP CORP
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