An h∞ controller for wind turbines based on linear variable parameter gain scheduling

A wind turbine, gain scheduling control technology, applied in the control of wind turbines, wind turbines, wind energy power generation, etc. As a result, problems such as excessive overshoot or fluctuation can achieve good robust stability and dynamic performance, good fan control, and improved response speed and dynamic stability.

Active Publication Date: 2015-08-05
LIAONING ELECTRIC POWER COMPANY LIMITED POWER SCI RES INSTION +4
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Problems solved by technology

However, as the capacity of wind turbines increases, the control becomes more and more complex, especially the requirements for the dynamic stability of the wind turbines are getting higher and higher.
For the division of different types of wind turbine operating intervals, large-scale changes in model parameters, and turbulent changes in input wind, it is difficult to control multi-variable systems. A single PID conventional control algorithm is difficult to meet the requirements of stable and reliable operation. Therefore, its control The result is often excessive overshoot or fluctuation, which cannot guarantee a certain robust stability and reliable performance

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  • An h∞ controller for wind turbines based on linear variable parameter gain scheduling
  • An h∞ controller for wind turbines based on linear variable parameter gain scheduling
  • An h∞ controller for wind turbines based on linear variable parameter gain scheduling

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Embodiment Construction

[0028] The present invention will be further described below in conjunction with the accompanying drawings and specific implementation examples.

[0029] A wind turbine H based on linear variable parameter (LPV) gain scheduling controller, which combines the linear variable parameter gain scheduling control algorithm and the robust H Control theory, and apply it to doubly-fed variable-speed variable-pitch wind turbines. Such as figure 1 , the control system is composed of GOT man-machine interface 1, main control circuit 2, drive circuit 3, U / I detection circuit 4, PLC5, protection circuit 6, motor 7, speed detector 8 and speed detection circuit 9, GOT man-machine interface 1 is connected with PLC5, PLC5 is connected with the main control circuit 2 through the driving circuit 3, the output of the main control circuit 2 is respectively connected with the motor 7 and the U / I detection circuit 4, the motor 7 is connected with the speed detector 8, and the speed detector 8 is ...

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Abstract

The invention relates to a controller for enhancing the dynamic stability of a system, which belongs to the field of automatic control and particularly relates to a wind generating set H-infinite controller based on linear parameter-varying gain scheduling. A control system consists of a GOT man-machine interface (1), a main control circuit (2), a driving circuit (3), a U / I detection circuit (4), a PLC (Programmable Logic Controller) (5), a protection circuit (6), a motor (7), a speed detector (8) and a speed detection circuit (9). According to the wind generating set H-infinite controller, a linear parameter-varying gain scheduling control algorithm and a robust H control theory are adopted, so that the stability, interference resistance and response speed of a wind power system are enhanced, a wind driven generator has high robust stability and dynamic performance, good fan control is realized, and the output power of the wind generating set is further increased.

Description

technical field [0001] The present invention relates to an automatic controller, in particular to a wind power generating set H based on linear variable parameter gain scheduling controller. Background technique [0002] Due to the characteristics of low energy density, randomness and instability of wind energy, wind turbines are complex multivariable nonlinear uncertain systems. Therefore, control technology is the key to safe and efficient operation of the turbine. [0003] There are many control methods for wind turbines, and various control methods have been successfully applied. However, with the increase of the capacity of wind turbines, the control becomes more and more complicated, especially the requirements for the dynamic stability of the wind turbines are getting higher and higher. For the division of different types of wind turbine operating intervals, large-scale changes in model parameters, and turbulent changes in input wind, it is difficult to control mul...

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): F03D7/00
CPCY02E10/723Y02E10/72
Inventor宋进良周洁邢凯柳昂卢国宁孙长河王舟宁李为兵张艳
OwnerLIAONING ELECTRIC POWER COMPANY LIMITED POWER SCI RES INSTION