Control Method of Active Power Filter Based on Fractional Sliding Mode

A power filter, fractional-order sliding mode technology, applied in active power filtering, circuit devices, AC network circuits, etc., can solve the problems of different system performance evaluation standards, lack of system stability certification, etc. Robustness, improving overall performance, enhancing the effect of dynamic performance

Inactive Publication Date: 2019-01-08
HOHAI UNIV CHANGZHOU
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The modeling methods of active power filters vary from person to person, and various control methods are used. There is a lack of system stability proof, and problems such as different system performance evaluation standards are common.

Method used

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  • Control Method of Active Power Filter Based on Fractional Sliding Mode
  • Control Method of Active Power Filter Based on Fractional Sliding Mode
  • Control Method of Active Power Filter Based on Fractional Sliding Mode

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Embodiment Construction

[0024] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0025] The application principle of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0026] A kind of active power filter control method based on fractional order sliding mode, comprises the following steps:

[0027] Step 1, establish the mathematical model of active power filter;

[0028] Step 2, establishing the control law equation of the fractional-order sliding mode controller based on the active power filter;

[0029] Step 3, using the output of the fractional-order sliding mode controller to control the active power filter.

[0030] The present invention stud...

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Abstract

The invention discloses a control method for an active electric filter based on a fractional order sliding mold. The method comprises the following steps: (1) establishing a mathematical model for the active electric filter; (2) establishing a control rule equation for a fractional order sliding mold controller based on the active electric filter; (3) utilizing an output of the fractional order sliding mold controller to control the active electric filter. According to the method provided by the invention, the real-time tracking for the harmonic current can be ensured, the dynamic property of the system can be enhanced, the system robustness can be increased and the excellent system performance is still maintained when the external load is changed; the sliding mold controller is designed for guaranteeing the active electric filter to run along the track of the sliding mold; the fractional order mold is introduced into the sliding mold controller; compared with integer order, the fractional order has the advantages that the adjustable item is added and the overall performance of the system is increased.

Description

technical field [0001] The invention belongs to the technical field of active power filters, and in particular relates to a fractional-order sliding mode-based active power filter control method. Background technique [0002] Capacitors for compensating reactive power are widely used in the power grid. At a certain frequency, it may meet the condition of series or parallel resonance. When the harmonic is large enough, it will cause dangerous overvoltage or overcurrent, which often leads to electrical components and Equipment damage seriously affects the safe operation of the power system. In addition, the flow of harmonic currents in the grid will cause active power loss on the line. The additional line loss caused by the skin effect of the wire is relatively large; severe harmonic distortion reduces the breaking capacity of the circuit breaker and may damage the circuit breaker. In civil buildings, since the neutral line is generally thin (the new standard has increased W...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/01
CPCH02J3/01H02J2203/20Y02E40/20
Inventor 曹頔雷单单王腾腾费峻涛
Owner HOHAI UNIV CHANGZHOU
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