本文關(guān)鍵詞： 有源電力濾波器 諧波抑制 無功補(bǔ)償 諧振 LCL濾波器 樣機(jī)實(shí)驗(yàn)　出處：《北京交通大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

【摘要】：隨著科技的發(fā)展,電力電子設(shè)備的大量使用帶來了很嚴(yán)重的電能質(zhì)量問題。電能質(zhì)量的高低決定了國民經(jīng)濟(jì)的整體水平,諧波和無功污染屬于影響電能質(zhì)量的兩個主要因素,因此研究治理諧波和無功補(bǔ)償?shù)碾娏﹄娮友b置是有重大意義的課題。有源電力濾波器作為一種能夠動態(tài)抑制諧波和補(bǔ)償無功的新型電力電子裝置,具有廣闊的發(fā)展前景。目前較多的有源電力濾波器通過LCL拓?fù)浣Y(jié)構(gòu)接入電網(wǎng),雖然注入電網(wǎng)的電流波形相對光滑,然而LCL拓?fù)浣Y(jié)構(gòu)存在諧振點(diǎn),會引起諧振,嚴(yán)重時引發(fā)的振蕩使某些次諧波放大,對公用電網(wǎng)產(chǎn)生污染,甚至引起嚴(yán)重事故。因此需要對有源電力濾波器并網(wǎng)結(jié)構(gòu)的LCL輸出濾波器進(jìn)行改進(jìn),使諧振得以抑制,同時濾除諧波,補(bǔ)償無功功率,提高電能質(zhì)量。本文主要完成了以下研究工作:(1)介紹了諧波和無功的產(chǎn)生以及危害,指出諧波治理的重要性;詳細(xì)介紹了有源電力濾波器的分類、工作原理,闡述了有源電力濾波器的發(fā)展現(xiàn)狀。(2)介紹了有源電力濾波器的主電路拓?fù)浣Y(jié)構(gòu),并推導(dǎo)出并聯(lián)型三相三線制有源電力濾波器的數(shù)學(xué)模型;對有源電力濾波器的輸出濾波器拓?fù)浣Y(jié)構(gòu)進(jìn)行了深入研究,并提出了改進(jìn)型LCL濾波器的拓?fù)浣Y(jié)構(gòu),導(dǎo)出其數(shù)學(xué)模型,并設(shè)計了有源電力濾波器的主電路參數(shù)。(3)詳細(xì)論述了有源電力濾波器的諧波檢測方法和控制方法,分析了各種檢測、控制方法的優(yōu)缺點(diǎn)和工作特性,最終選用了基于瞬時無功理論的ip-iq諧波檢測方法和三角波比較控制方法。并用PSIM軟件搭建有源電力濾波器系統(tǒng)數(shù)字仿真模型,驗(yàn)證了檢測方法、控制方法的有效性以及對有源電力濾波器并網(wǎng)拓?fù)浣Y(jié)構(gòu)改進(jìn)的可行性以及適用性。(4)結(jié)合實(shí)驗(yàn)裝置,進(jìn)行了有源電力濾波器控制系統(tǒng)的硬件和軟件設(shè)計。(5)基于ADSP-21489控制系統(tǒng),搭建了樣機(jī)實(shí)驗(yàn)平臺,進(jìn)行了 LCL拓?fù)浣Y(jié)構(gòu)和改進(jìn)型LCL拓?fù)浣Y(jié)構(gòu)的諧波補(bǔ)償對比實(shí)驗(yàn),以及改進(jìn)型LCL拓?fù)浣Y(jié)構(gòu)的諧波與無功綜合補(bǔ)償實(shí)驗(yàn)。通過實(shí)驗(yàn)波形證明了本文所設(shè)計的改進(jìn)型LCL濾波器能夠較好的抑制諧振,同時驗(yàn)證了檢測、控制算法的有效性和有源電力濾波器參數(shù)設(shè)計的正確性。
[Abstract]:With the development of science and technology, the extensive use of power electronic equipment has brought about serious power quality problems. The level of power quality determines the overall level of the national economy. Harmonic and reactive power pollution are two main factors that affect power quality. Therefore, it is of great significance to study the power electronic device for harmonic and reactive power compensation. Active power filter is a new type of power electronic device which can dynamically suppress harmonic and compensate reactive power. At present, more active power filters are connected to the power network through LCL topology. Although the current waveform injected into the network is relatively smooth, there are resonance points in the LCL topology. It will cause resonance, and the oscillation caused by serious oscillation will make some sub-harmonics amplify and pollute the public power network. So it is necessary to improve the LCL output filter in the grid-connected structure of active power filter, so that the resonance can be suppressed, harmonics can be filtered and reactive power can be compensated at the same time. To improve the power quality. This paper mainly completed the following research work: 1) introduced the generation and harm of harmonic and reactive power, pointed out the importance of harmonic control; The classification and working principle of active power filter are introduced in detail, and the development status of active power filter is described. (2) the main circuit topology of active power filter is introduced. The mathematical model of shunt three-phase three-wire active power filter is deduced. The topology of the output filter of active power filter is studied, and the topology of the improved LCL filter is proposed, and its mathematical model is derived. The main circuit parameter of active power filter is designed. The harmonic detection method and control method of active power filter are discussed in detail. The advantages and disadvantages and working characteristics of various detection and control methods are analyzed. Finally, ip-iq harmonic detection method and triangle wave comparison control method based on instantaneous reactive power theory are selected. The digital simulation model of active power filter system is built with PSIM software, and the detection method is verified. The effectiveness of the control method and the feasibility and applicability of improving the topology structure of the active power filter (APF) are combined with the experimental device. The hardware and software design of active power filter control system. 5) based on ADSP-21489 control system, a prototype experiment platform is built. The harmonic compensation experiments of LCL topology and improved LCL topology are carried out. The experimental results of harmonic and reactive power compensation of the improved LCL topology show that the improved LCL filter designed in this paper can suppress the resonance and verify the detection at the same time. The validity of the control algorithm and the correctness of active power filter parameter design.
【學(xué)位授予單位】：北京交通大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TM761

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