Neutral network global fast terminal sliding mode control method for active power filter and calculating equipment

A technology of power filter and neural network, applied in active power filter, AC network to reduce harmonic/ripple, etc., can solve the problems of low system stability and reliability

Active Publication Date: 2018-11-30
HOHAI UNIV CHANGZHOU
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Problems solved by technology

[0003] At present, there is no advanced control theory system for systematic active power filters at home and abroad. The modeling methods of active power filters vary from person to person, and the control methods adopted are also various, resulting in relatively low stability and reliability of the system. Low

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  • Neutral network global fast terminal sliding mode control method for active power filter and calculating equipment
  • Neutral network global fast terminal sliding mode control method for active power filter and calculating equipment
  • Neutral network global fast terminal sliding mode control method for active power filter and calculating equipment

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Embodiment Construction

[0080] The present invention will be further described in detail below in conjunction with the accompanying drawings and through specific embodiments. The following embodiments are only descriptive, not restrictive, and cannot limit the protection scope of the present invention.

[0081] In order to achieve the purpose and effect of the technical means, creation features, work flow, and use method of the present invention, and to make the evaluation method easy to understand, the present invention will be further described below in conjunction with specific examples.

[0082] Such as figure 2 An active power filter neural network global fast terminal sliding mode control method is shown, including the following steps:

[0083] Step A, establish the mathematical model of active power filter; figure 1 It is a schematic diagram of the model of the active power filter in this embodiment; figure 1 Symbol in: V s1 ,V s2 ,V s3 Indicates the three-phase power supply voltage, i ...

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Abstract

The invention discloses a neutral network global fast terminal sliding mode control method for an active power filter and calculating equipment. The neutral network global fast terminal sliding mode control method comprises the following steps that first, an active power filter mathematical model is established; second, a neutral network used in the method is an RBF neutral network, the RBF neutral network is utilized to approximate to an unknown part of an active power filter system, and an RBF neutral network global fast terminal sliding mode controller is designed and comprises a control law and an adaptive law; and third, the active power filter is controlled according to the RBF neutral network global fast terminal sliding mode controller. The RBF neutral network has the universal approximation characteristic and can approximate to any continuous function in any precision. Global fast terminal sliding mode control has the following advantages that (1) through a global fast terminal sliding mode, it is ensured that the system arrives at the sliding mode surface within the limited time, and thus the system state is converged to a balanced state within the limited time; (2) the control law of the global fast terminal sliding mode is continuous, and thus the chattering phenomenon can be eliminated; and (3) global fast terminal sliding mode control has great robustness to systematic uncertainty and interference.

Description

technical field [0001] The invention relates to a global fast terminal sliding mode control method of an active power filter neural network, in particular to a global fast terminal sliding mode control method of an active power filter based on an RBF neural network in three-phase parallel voltage type active power Application on filter control. Background technique [0002] With the extensive application of nonlinear loads, the harmonic pollution in the power grid is becoming more and more serious, which has a negative impact on the quality of power supply and consumption, resulting in distortion of the grid voltage and current waveforms, low power factor, phase distortion, and surges. The control of harmonics has an extremely critical impact on maintaining the safety and stable operation of the power grid system. The means of harmonic control mainly include active power filter (APF) and passive power filter. Compared with passive power filters, active power filters have t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/01
CPCH02J3/01Y02E40/20
Inventor 王欢费峻涛冯治琳
Owner HOHAI UNIV CHANGZHOU
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