Optimization control method for switched reluctance wind power hydrogen production system

Abstract

The invention discloses an optimal control method for a switched reluctance wind power hydrogen production system, which comprises the following steps of: calculating a phase flux linkage numerical table of a switched reluctance generator by a finite element to obtain a phase flux linkage interpolation matrix and a phase electromagnetic torque interpolation matrix; building a switched reluctance generator current chopping control interpolation model; establishing a working point numerical table, and by taking the minimum electromagnetic torque fluctuation as a target, optimizing a switching angle and a phase current reference value by utilizing a simulated annealing algorithm to form a control parameter working area interpolation table; establishing a wind wheel load model, a gear system dynamics model and a hydrogen production electrolytic cell model; and the models are coupled, three control parameters of a turn-on angle, a turn-off angle and a phase current reference value with the minimum torque fluctuation under the operation condition are obtained through interpolation, and interpolation phase current is finely adjusted through a PID algorithm, so that the actual rotating speed of a generator rotor follows the optimal rotating speed of a wind wheel. According to the invention, the torque ripple can be greatly reduced, the power generation quality is improved, optimal control of the switched reluctance wind power hydrogen production system is realized, and the system design is guided.

Description

technical field [0001] The invention belongs to the technical field of wind power generation, in particular to an optimal control method for a switched reluctance wind power hydrogen production system. Background technique [0002] As a clean and non-polluting renewable energy with huge total reserves, wind energy has attracted the attention of countries all over the world. The switched reluctance generator has the advantages of simple structure, high working reliability, low price and no use of rare earth elements. The use of switched reluctance generators to realize wind power hydrogen production can effectively reduce the cost of hydrogen production, improve the reliability of wind power systems, and alleviate the current situation of wind power curtailment, which is in line with the current development policy requirements in the energy field. [0003] The electromagnetic torque generated by the switched reluctance wind turbine in the working process is closely related t...

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Problems solved by technology

At the same time, because the switched reluctance wind power hydrogen production system often works under the condition of variable wind speed and variable wind wheel load, it is difficult to coordinate the overall design of the control strategy and system structure in the design stage.

[0004] Due to the long time to build the experimental bench of the switched reluctance wind power generation hydrogen production system, the high cost of experiment and maintenance, and it is difficult to realize the double-layer optimization of the same structure and control strategy

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