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Research on Fast Control Strategies of Active Power Filter

Author: ZhengLei
Tutor: CuiYuLong
School: Beijing University of Chemical Technology
Course: Detection Technology and Automation
Keywords: Active Power Filter (APF) Space Vector Harmonic compensation MATLAB simulation Digital Signal Processing
CLC: TN713.8
Type: Master's thesis
Year: 2009
Downloads: 207
Quote: 1
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Abstract


With the development of power electronics technology , non-linear loads and more widely, also increased the pollution problem on the grid . Traditional harmonic suppression method is to use a passive filter , this method has the great disadvantage filtering effect of the power system impedance greater impact , and only to eliminate a certain number of harmonics , and the active power filter (APF) has a good track performance from system impedance affect more and more attention in recent years . This paper describes the background and development of the active power filter , then the classification of the active power filter control mode and works made ??for further research , and compare a variety of harmonic current detection method , select harmonic detection method based on instantaneous reactive power theory i_p-i_q . Active power filter control system is the key to determine the performance of the filter , select an effective compensation control method , in order to give full play to the active power filter real-time and dynamic compensation function . This paper focuses on the active power filter control methods in the study of active power filter control method based on the widely used at home and abroad , to select the most effective of the three methods for analysis , respectively, the instantaneous value of comparative law , triangle wave comparison method and space vector control method . For these three methods , the paper using the MATLAB / SIMULINK structures active power filter model , and each method detailed simulation analysis , simulation results verify the effectiveness of the various methods by comparing the advantages and disadvantages , the conclusion is the space vector method is easier to digitize and loss of main circuit switching devices of the smallest , so select the space vector method to design based on the DSP control system on the basis of theoretical analysis and simulation studies of , design a controlled based TMS320F2812DSP shunt power there source filter . The experimental results show that the compensation method based on instantaneous reactive power theory i_p-i_q harmonic current detection method and space vector capable of real-time , accurate harmonic current compensation grid .

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Basic electronic circuits > Filtering techniques,the filter > Active filter
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