一種有源電力濾波器中IGBT故障診斷與容錯技術(shù)研究
發(fā)布時間：2019-06-28 16:33
【摘要】：隨著社會的迅速發(fā)展和科技的快速進(jìn)步，人們對電能質(zhì)量的要求越來越高。有源電力濾波器因其能動態(tài)治理各次諧波和進(jìn)行無功補(bǔ)償而得到廣泛應(yīng)用。然而有源電力濾波器也像大多數(shù)電力電子裝置一樣，在不正當(dāng)操作或突發(fā)情況下會發(fā)生各種故障，導(dǎo)致整個系統(tǒng)不能正常工作，嚴(yán)重時將造成災(zāi)難性后果。因此，為了提高系統(tǒng)的可靠性，增長APF的安全運行時間，降低因工業(yè)中APF故障系統(tǒng)不能正常運行而造成的重大損失，對有源電力濾波器的故障診斷與容錯控制的研究具有重要的理論意義和應(yīng)用價值。 針對APF（有源電力濾波器）中IGBT在長期運行時容易出現(xiàn)故障的情況，將三相電機(jī)中基于電流Clark矢量變換診斷故障的方法引用到有源電力濾波器的故障診斷中，并分析了APF容錯拓?fù)浣Y(jié)構(gòu)。APF是通過輸出與負(fù)載電流的諧波大小頻率相等、方向相反的電流來抑制諧波，其輸出電流波形復(fù)雜，國內(nèi)外對APF故障診斷的相關(guān)研究尚處于起步階段，本文分別提取APF輸出電流的基波分量、5次諧波分量和7次諧波分量進(jìn)行比較分析對比，最終選取基波分量來進(jìn)行Clark變換，利用其電流Clark矢量軌跡及軌跡斜率來診斷IGBT開路故障，提出通過DSP軟件程序?qū)崿F(xiàn)故障診斷的方法，，同時給出APF容錯拓?fù)浣Y(jié)構(gòu)以及容錯控制實施方法。 本文在MATLAB/simulink平臺上對并聯(lián)型APF控制系統(tǒng)仿真模型進(jìn)行了詳細(xì)設(shè)計，對系統(tǒng)主電路參數(shù)進(jìn)行了設(shè)計，并對每個子模塊的仿真進(jìn)行了設(shè)計。通過仿真實驗，說明了本仿真模型效果良好，可以進(jìn)行下一步的故障仿真。最后通過仿真實驗平臺對本文提出的故障診斷方法以及容錯拓?fù)浣Y(jié)構(gòu)進(jìn)行了仿真實驗研究，驗證了其正確性及可靠性。
[Abstract]:With the rapid development of society and the rapid progress of science and technology, people's demand for electric energy quality is getting higher and higher. The active power filter can be widely used because of its dynamic control of the harmonics and reactive power compensation. However, that active pow filter, like most of the power electronic device, can cause a variety of failures in an improper operation or a burst, resulting in an inability of the overall system to work properly, which will result in catastrophic consequences when severe. Therefore, in order to improve the reliability of the system, the safe running time of the APF is increased, and the heavy losses caused by the failure of the APF fault system in the industry can be reduced, and the research on the fault diagnosis and fault-tolerant control of the active power filter is of great theoretical significance and application value. In the case of the fault of the IGBT in the long-term operation of the IGBT in the APF (active power filter), the fault diagnosis method based on the current-Clark vector transformation in the three-phase motor is referred to the fault diagnosis of the active power filter, and the fault-tolerant topology of the APF is analyzed. The output current is complex, and the relevant research on the fault diagnosis of APF at home and abroad is still in the early stage. In this paper, the fundamental component, the fifth harmonic component and the 7th harmonic component of the APF output current are respectively extracted and compared, the fundamental component is selected to perform the Clark transformation, and the current Clark vector trace and the track slope of the fundamental wave component are used to diagnose the IGBT open circuit. The method of fault diagnosis by DSP software program is proposed, and the fault-tolerant topology and fault-tolerant control of APF are given. In this paper, the simulation model of the parallel APF control system is designed on the MATLAB/ Simulink platform, the main circuit parameters of the system are designed, and the simulation of each sub-module is carried out. The simulation experiment shows that the simulation model has good effect and the next step can be carried out. In the end, the fault diagnosis method and the fault-tolerant topological structure proposed in this paper are simulated by the simulation experiment platform, and the correctness and the correctness of the fault-tolerant topology are verified.
【學(xué)位授予單位】：武漢科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TN713.8;TM761
本文編號：2507448
[Abstract]:With the rapid development of society and the rapid progress of science and technology, people's demand for electric energy quality is getting higher and higher. The active power filter can be widely used because of its dynamic control of the harmonics and reactive power compensation. However, that active pow filter, like most of the power electronic device, can cause a variety of failures in an improper operation or a burst, resulting in an inability of the overall system to work properly, which will result in catastrophic consequences when severe. Therefore, in order to improve the reliability of the system, the safe running time of the APF is increased, and the heavy losses caused by the failure of the APF fault system in the industry can be reduced, and the research on the fault diagnosis and fault-tolerant control of the active power filter is of great theoretical significance and application value. In the case of the fault of the IGBT in the long-term operation of the IGBT in the APF (active power filter), the fault diagnosis method based on the current-Clark vector transformation in the three-phase motor is referred to the fault diagnosis of the active power filter, and the fault-tolerant topology of the APF is analyzed. The output current is complex, and the relevant research on the fault diagnosis of APF at home and abroad is still in the early stage. In this paper, the fundamental component, the fifth harmonic component and the 7th harmonic component of the APF output current are respectively extracted and compared, the fundamental component is selected to perform the Clark transformation, and the current Clark vector trace and the track slope of the fundamental wave component are used to diagnose the IGBT open circuit. The method of fault diagnosis by DSP software program is proposed, and the fault-tolerant topology and fault-tolerant control of APF are given. In this paper, the simulation model of the parallel APF control system is designed on the MATLAB/ Simulink platform, the main circuit parameters of the system are designed, and the simulation of each sub-module is carried out. The simulation experiment shows that the simulation model has good effect and the next step can be carried out. In the end, the fault diagnosis method and the fault-tolerant topological structure proposed in this paper are simulated by the simulation experiment platform, and the correctness and the correctness of the fault-tolerant topology are verified.
【學(xué)位授予單位】：武漢科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TN713.8;TM761
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