Adaptive passivity-based control (PBC) method for doubly-fed induction wind driven generator

Abstract

The invention relates to an adaptive passivity-based control (PBC) method for a doubly-fed induction wind driven generator, which comprises the following steps that: the stator current and rotor speed system data of a variable speed constant frequency (VSCF) doubly-fed wind power generation system is input into a digital space (dSpace) hardware platform of a measurement and control system; the dSpace hardware platform processes the data and sends the processed data to an adaptive passive controller for tracking and calculating the data by an adaptive method, and converts the data; and the converted data are output to a drive circuit to control the VSCF doubly-fed wind power generation system to change the state. The method realizes the self-estimation of motor stator and rotor parameters through adaptive control, is easy to implement, has high robustness and static and dynamic characteristics, can effectively eliminate the adverse effect of the change of stator resistance and rotor resistance of a doubly-fed induction generator (DFIG) on the performance of PBC, and realizes the vector control of a rotor field and the asymptotic tracking of electromagnetic torque.

Description

Technical field [0001] The present invention involves a control method, which specializes in a dual feed -sensitive wind -induced wind turbine adaptive non -adequate control method. Background technique [0002] With the increasingly mature wind power technology, the dual feed -induction generator (DFIG) is used to achieve the power generation method controlled by the transmission constant frequency (VSCF), which is widely used in its excellent performance.DFIG is a typical non -linear, multi -variable, and strong coupling system. The traditional vector control method has insufficient dependent system parameters, and it is easy to produce current distortion when load changes.Essence [0003] In order to further improve the static and dynamic performance of DFIG speed regulation and enhance anti -interference ability, in recent years, the theory of non -linear control has been widely studied and has made significant progress, becoming the leading trend of DFIG control theory resea...

AI Technical Summary

Problems solved by technology

[0007] The present invention aims at the problem of unstable system control existing in the variable-speed constant-frequency control method using double-fed induction generators, and proposes an adaptive passivity control method for double-fed induction wind-driven generators. (DFIG) is the control object, using advanced nonlinear control method to realize the high-performance stable control of DFIG

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