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Three-level active filter based on model predictive control

A model predictive control, source filter technology, applied in active power filtering, AC network to reduce harmonics/ripples, etc., to achieve good harmonic compensation effects

Inactive Publication Date: 2021-07-02
HARBIN UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the existing problem of how to achieve efficient and stable control of the three-level APF when using the three-level APF to control harmonics; the purpose of the present invention is to provide a three-level active filter based on model predictive control

Method used

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  • Three-level active filter based on model predictive control
  • Three-level active filter based on model predictive control
  • Three-level active filter based on model predictive control

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Embodiment Construction

[0022] In order to make the object, technical solution and advantages of the present invention clearer, the present invention is described below through specific embodiments shown in the accompanying drawings. It should be understood, however, that these descriptions are exemplary only and are not intended to limit the scope of the present invention. The structures, proportions, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification, for those who are familiar with this technology to understand and read, and are not used to limit the conditions for the implementation of the present invention. Therefore, Without technical substantive significance, any modification of structure, change of proportional relationship or adjustment of size shall still fall within the technology disclosed in the present invention without affecting the effect and purpose of the present invention. within the scope of the conten...

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Abstract

The invention discloses a three-level active filter based on model predictive control, and relates to the technical field of active filtering. The method comprises the following steps: (1) constructing a main circuit topological structure of the three-level active filter; (2) designing a three-level active filter system scheme; (3) carrying out harmonic wave and reactive power detection of the three-level active filter; and (4) carrying out a model prediction control strategy. Matlab / Simulink simulation software is used for system simulation modeling, and simulation research verifies that the provided three-level active filter system based on model prediction control has a good harmonic compensation effect; and a three-level APF system experiment platform with DSPF28335 as a core is built, communication between the system and an upper computer is achieved, display of operation parameters of the three-level APF system by the upper computer is achieved, real-time control over the system by means of an upper computer is achieved, and finally harmonic compensation of the three-level active power filter system based on model predictive control is achieved.

Description

technical field [0001] The invention belongs to the technical field of active filtering, and in particular relates to a three-level active filter based on model predictive control. Background technique [0002] With the rapid development of science and technology, more and more power electronic devices are widely used in UHV AC and DC transmission, new energy, distributed power and other electrical equipment, which has caused great changes in the power grid itself and the load structure. It causes nonlinear distortion of voltage and current on the power supply side of the power grid, and causes harmonic pollution of the power system. Harmonics will increase the loss of equipment, overheat the equipment, reduce the efficiency and utilization of equipment, and affect the reliability of relay protection devices. Therefore, harmonic suppression has become an increasingly important issue. For the control of harmonics, there are two basic ideas: one is to transform the power ele...

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 张静任明杰
Owner HARBIN UNIV OF SCI & TECH
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