發(fā)布時(shí)間：2018-01-09 13:03

  本文關(guān)鍵詞：基于載波相移調(diào)制技術(shù)的H橋級(jí)聯(lián)APF的研究　出處：《合肥工業(yè)大學(xué)》2015年碩士論文　論文類(lèi)型：學(xué)位論文

  更多相關(guān)文章： H橋級(jí)聯(lián)APF 載波相移調(diào)制 諧波檢測(cè) 補(bǔ)償電流控制 電壓雙層控制

【摘要】：隨著現(xiàn)代工業(yè)技術(shù)的發(fā)展,電力系統(tǒng)中非線性負(fù)荷大量增加,給電網(wǎng)帶來(lái)了嚴(yán)重的諧波污染。有源電力濾波器(Active Power Filter, APF)作為一種新型的諧波和無(wú)功補(bǔ)償裝置,能夠?qū)崿F(xiàn)動(dòng)態(tài)補(bǔ)償,改善電能質(zhì)量。當(dāng)前國(guó)內(nèi)外對(duì)APF的研究主要集中在低壓領(lǐng)域,APF應(yīng)用在中高壓領(lǐng)域面臨的諸多關(guān)鍵問(wèn)題有待解決。例如在現(xiàn)有電力電子器件能承受的電壓等級(jí)不夠高的情況下,如何使APF裝置承受高電壓。另外,電力電子器件開(kāi)關(guān)頻率隨著APF容量的增大而降低,較低的開(kāi)關(guān)頻率又直接影響APF的補(bǔ)償效果,所以在中高壓領(lǐng)域需要解決器件的開(kāi)關(guān)頻率與容量之間的矛盾。為了解決APF應(yīng)用于高壓環(huán)境中的問(wèn)題,本文選用H橋級(jí)聯(lián)型拓?fù)?通過(guò)H橋單元的串聯(lián),提高APF電壓承受能力。結(jié)合H橋級(jí)聯(lián)型結(jié)構(gòu)基本工作模式,采用倍頻式載波相移調(diào)制技術(shù),提高裝置等效開(kāi)關(guān)頻率。針對(duì)APF常規(guī)的檢測(cè)與控制問(wèn)題。本文采用基于瞬時(shí)無(wú)功功率理論的ip-iq諧波檢測(cè)方法,該方法能夠快速提取諧波電流,為有源電力濾波器發(fā)出補(bǔ)償電流提供參考目標(biāo)。為了有效地輸出補(bǔ)償電流,本文采用基于三角載波的直接電流控制方法。為了控制分立的直流側(cè)電容電壓的穩(wěn)定和均衡,文章采用了疊加有功直流分量和有功電壓矢量的雙層控制方法。文章最后在Simulink環(huán)境下搭建H橋級(jí)聯(lián)APF系統(tǒng)仿真模型,對(duì)各功能模塊及系統(tǒng)整體功能進(jìn)行仿真實(shí)驗(yàn)。通過(guò)仿真實(shí)驗(yàn)驗(yàn)證了所提調(diào)制、檢測(cè)與控制策略的正確性與有效性。
[Abstract]:With the development of modern industrial technology, the non-linear loads in the power system, brings serious harmonic pollution to power grid. Active power filter (Active Power, Filter, APF) as a new type of harmonic and reactive power compensation device, to achieve dynamic compensation, improve the power quality. The current research of APF at home and abroad mainly concentrated in low pressure areas, many key problems in the domain of APF application in the high voltage and the voltage level remains to be solved. For example can bear in the existing power electronic devices is not high, how to make the APF device under high voltage. In addition, the switching frequency of power electronic devices and reduce with the increase of the capacity of APF, the switching frequency is low has a direct impact on the compensation effect of APF, so it is necessary to solve the contradiction between the switch frequency and the capacity of the device in the high voltage field. In order to solve the application of APF in high pressure environment. In this paper, the H bridge cascaded topology, through the H bridge unit series, improve APF voltage capability. Combined with the basic work of H bridge cascaded structure model, using the double frequency carrier phase shift modulation technology, improve equipment. The equivalent switching frequency for APF detection and control problem. This paper uses the ip-iq method of instantaneous harmonic detection reactive power based on the theory, the method can quickly detect the harmonic current, provide the reference for the target of active power filter compensation current. In order to effectively make the output compensation current, this paper adopts direct current control method based on triangle carrier wave. In order to stabilize and balance the DC capacitor voltage control division, the double control method of superposition the active DC component and active voltage vector. Finally, in the Simulink environment to build the cascade APF system simulation model of H bridge, the function of each module and system Simulation experiments are carried out to verify the correctness and effectiveness of the proposed modulation, detection and control strategy.

【學(xué)位授予單位】：合肥工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類(lèi)號(hào)】：TM761;TN713.8

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本文編號(hào)：1401481