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Fractional-order sliding mode control method, system and storage medium for active power filter based on neural network

A power filter, fractional-order sliding mode technology, used in active power filtering, AC network to reduce harmonics/ripples, etc., can solve problems such as stability and reliability, and achieve good reliability and stability , Accurate dynamic characteristics and characterization capabilities, the effect of fast and accurate current compensation

Active Publication Date: 2022-07-19
HOHAI UNIV CHANGZHOU
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Problems solved by technology

[0005] In order to solve the problem of insufficient stability and reliability of active power filter control in the prior art, the present invention proposes a fractional-order sliding mode control method, system and storage medium for active power filter based on neural network. The ability of the neural network to deal with nonlinear items is close to the equivalent control item, so that the system does not require too high model accuracy, and can quickly and accurately perform current compensation

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  • Fractional-order sliding mode control method, system and storage medium for active power filter based on neural network
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  • Fractional-order sliding mode control method, system and storage medium for active power filter based on neural network

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[0083] Below in conjunction with accompanying drawing, technical scheme of the present invention is further described:

[0084] The present invention proposes a fractional-order sliding mode control method of active power filter based on neural network, such as figure 1 shown, including the following steps:

[0085] S1. Design a corresponding fractional-order sliding mode model according to the control model of the active power filter, and obtain a control law.

[0086] The circuit topology of the active power filter in the embodiment of the present invention is as follows figure 2 As shown, a single-phase parallel active power filter is used.

[0087] Take the compensation current i of the active power filter c For x, the control model of the active power filter is obtained, and the equation is expressed as follows:

[0088]

[0089] in, is the second derivative of x, R is the resistance value of the AC side, L is the equivalent inductance of the AC side, U s is ...

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Abstract

The invention discloses a fractional-order sliding mode control method and system of an active power filter based on a neural network, aiming at solving the technical problems of insufficient stability and reliability of the active power filter control in the prior art. It includes: designing a corresponding fractional-order sliding mode model according to the control model of the active power filter, and obtaining the control law; building a dual-feedback fuzzy double-hidden-layer recurrent neural network model based on the control law to obtain the optimal equivalent control term; The optimal control law is obtained by using the effective control term to control the active power filter. The present invention can perform current compensation quickly and accurately, and has good reliability and stability.

Description

technical field [0001] The invention relates to a fractional-order sliding mode control method, system and storage medium of an active power filter based on a neural network, and belongs to the technical field of active power filter intelligent control. Background technique [0002] With the rapid development of science and technology, the application of power electronic equipment is more and more extensive in the power system. Harmonic pollution to a large extent. Harmonics will not only gradually increase the safety hazards of the power system, but also cause waste of electric energy, increase losses, and affect the normal operation of electrical equipment. Therefore, harmonic control has received more and more attention in recent years. [0003] In the early stage of harmonic control, many conventional methods such as PID control can still meet the needs of the power grid to a certain extent, but now these conventional methods have been difficult to play a good effect. A...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/01
CPCH02J3/01Y02E40/20
Inventor 卓捷费峻涛
Owner HOHAI UNIV CHANGZHOU