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Active power filter closed loop control method based on decoupling resonance regulator array

A technology of power filter and closed-loop control, which is applied to harmonic reduction devices and AC networks to reduce harmonics/ripples, etc., can solve problems that are far from mature, and achieve good compensation effects, high steady-state compensation performance, and good The effect of robustness

Active Publication Date: 2012-08-01
XI AN JIAOTONG UNIV
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Problems solved by technology

[0005] Aiming at the research on the closed-loop control method of APF system, many scholars have put forward fruitful suggestions, but these control methods have certain deficiencies or have certain restrictions on the use environment, and many practical problems have been exposed in the field use process. far from mature

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  • Active power filter closed loop control method based on decoupling resonance regulator array
  • Active power filter closed loop control method based on decoupling resonance regulator array
  • Active power filter closed loop control method based on decoupling resonance regulator array

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Embodiment Construction

[0039] The present invention is described in further detail below in conjunction with accompanying drawing:

[0040] like figure 1 The main circuit topology of the active power filter is shown in , the main body is the three-phase voltage inverter VSI, the DC side and the capacitor C dc connected, and the AC side passes through three incoming inductances L C Connected in parallel with the three-phase grid.

[0041] The closed-loop control method proposed by the present invention is as figure 1 As shown in the lower half of the control block diagram, since the device directly detects the current on the grid side, a closed-loop system is formed from the perspective of control. The control part is mainly sub-harmonic control part, fundamental wave control part, and command modulation part.

[0042] Harmonic control section:

[0043] It is mainly used to control the harmonic current components flowing into the power grid side to achieve the function of compensating harmonic c...

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Abstract

The invention discloses an active power filter closed loop control method based on a decoupling resonance regulator array. According to the control method, from the basic closed loop control structure, the novel resonance regulator array with a decoupling function is introduced, thus closed loop control of the active power filter system is realized. According to the control method, the robustness and the integral compensation property of the system are improved, and subharmonic compensation and higher harmonic effective compensation can be conveniently selected, no complex harmonic separation algorithm is not needed by a control system, thus the control system is simple and reliable, is easy to realize, is greatly improved in compensation property of the active power filter device, and has more actual engineering application value.

Description

Technical field: [0001] The invention belongs to the research field of power grid power quality control, and in particular relates to a closed-loop control method of an active power filter (APF-Active Power Filter) based on a novel decoupling resonant regulator array. Background technique: [0002] With the development of human industry and the continuous progress of power electronics technology, a large number of non-linear load devices are connected to the power network. While these devices improve people's life, production efficiency and level, they also bring about various power quality problems. In particular, the introduction of a large number of harmonic currents will greatly affect the efficiency and life of the entire power grid system, threatening the safe and reliable operation of the power grid. [0003] As an efficient power quality control device, the active power filter (APF) integrates advanced technologies such as power electronics and control theory. Compa...

Claims

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Application Information

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IPC IPC(8): H02J3/01
CPCY02E40/40
Inventor 卓放易皓张艳军
Owner XI AN JIAOTONG UNIV
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