本文關(guān)鍵詞：基于DSP的單相小功率光伏并網(wǎng)逆變器設(shè)計(jì)　出處：《電子科技大學(xué)》2014年碩士論文　論文類(lèi)型：學(xué)位論文

  更多相關(guān)文章： 光伏并網(wǎng)逆變器 Boost-ZVT 最大功率跟蹤 并網(wǎng)控制

【摘要】：全球經(jīng)濟(jì)飛速發(fā)展的同時(shí),伴隨著能源的巨大消耗。隨著常規(guī)的化石能源逐漸枯竭,能源危機(jī)隨時(shí)可能爆發(fā),加快對(duì)新能源的開(kāi)發(fā)利用已經(jīng)迫在眉睫。在眾多的新能源中,太陽(yáng)能是非常具有開(kāi)發(fā)潛力的。目前,光伏發(fā)電已經(jīng)成為世界各國(guó)利用太陽(yáng)能的主要方式。而光伏并網(wǎng)發(fā)電由于具有諸多優(yōu)點(diǎn)已經(jīng)成為了光伏發(fā)電的主要研究方向。本文對(duì)單相兩級(jí)式非隔離型光伏并網(wǎng)逆變器的整個(gè)工作過(guò)程進(jìn)行了較為深入的分析,對(duì)其所需要的關(guān)鍵技術(shù)進(jìn)行了較為深入的研究,完成了光伏并網(wǎng)逆變器的硬件電路設(shè)計(jì)和軟件程序編寫(xiě)以及實(shí)驗(yàn)調(diào)試工作。首先,對(duì)DC-DC變換器進(jìn)行了深入的理論分析,指出了常規(guī)Boost變換器由于采用硬開(kāi)關(guān)技術(shù)所帶來(lái)的缺點(diǎn),從而舍棄了采用常規(guī)Boost變換器的方案,將具有軟開(kāi)關(guān)技術(shù)的Boost-ZVT變換器運(yùn)用到光伏并網(wǎng)逆變器系統(tǒng)中,詳細(xì)的闡述了其工作原理,并對(duì)其關(guān)鍵參數(shù)進(jìn)行了計(jì)算及選型。對(duì)常用的逆變輸出濾波電路進(jìn)行了對(duì)比分析,確定了濾波電路的結(jié)構(gòu),并對(duì)其參數(shù)選擇進(jìn)行了計(jì)算及選型。其次,在對(duì)光伏電池進(jìn)行了深入理論分析后,在Matlab/SimuLink環(huán)境下搭建了其仿真模型,得到了光伏電池受到外界因素(光照強(qiáng)度和溫度)干擾時(shí)的輸出特性曲線(xiàn)。對(duì)光伏并網(wǎng)逆變器的MPPT、并網(wǎng)控制以及孤島效應(yīng)檢測(cè)等關(guān)鍵技術(shù)進(jìn)行了較為深入的研究,確定了本文所采用的控制策略。并在此基礎(chǔ)之上,在Matlab/SimuLink環(huán)境下搭建了整個(gè)光伏并網(wǎng)逆變器的仿真模型,驗(yàn)證了設(shè)計(jì)方案的可行性。再次,在方案的可行性得到驗(yàn)證后,完成了小功率的單相光伏并網(wǎng)逆變器控制器的軟硬件的設(shè)計(jì),確定了以TI公司TMS320F2812為核心控制芯片,完成了信號(hào)采樣電路、過(guò)零檢測(cè)電路以及MOSFET驅(qū)動(dòng)電路等外圍硬件電路的設(shè)計(jì)以及軟件程序的編寫(xiě)。最后,通過(guò)搭建實(shí)物測(cè)試平臺(tái),對(duì)光伏并網(wǎng)逆變器進(jìn)行了實(shí)驗(yàn)調(diào)試。對(duì)其關(guān)鍵環(huán)節(jié)的輸出波形通過(guò)示波器進(jìn)行了觀測(cè)分析,結(jié)果表明該光伏并網(wǎng)逆變器實(shí)現(xiàn)了設(shè)計(jì)功能,達(dá)到了預(yù)定目標(biāo)。
[Abstract]:The rapid development of the global economy at the same time, with huge energy consumption. With conventional fossil energy depletion, the energy crisis could erupt at any time, speeding up the development and utilization of new energy has been imminent. In many of the new energy, solar energy is great potential of development. At present, the photovoltaic power generation has become the world's main use solar energy and photovoltaic power generation. Because of its many advantages has become the main research direction of photovoltaic power generation. The single phase two stage during the whole working process of non isolated grid connected photovoltaic inverter is analyzed, the key technologies of the need for a more in-depth research, has completed the hardware circuit design and the software program of photovoltaic grid connected inverter and experimental debugging prepared. Firstly, the DC-DC converter was analyzed in theory, pointed out The conventional Boost converter caused by using hard switching technology to abandon the shortcomings of using the conventional Boost converter scheme, with soft switching Boost-ZVT converter applied to photovoltaic inverter system, elaborates its working principle, and the key parameters of the calculation and selection of inverter. The output filter circuit used for comparative analysis to determine the structure of the filter circuit, and the parameter selection of calculation and selection. Secondly, in the photovoltaic cell in-depth theoretical analysis, establish the simulation model in Matlab/ SimuLink environment, the photovoltaic cell by external factors (light intensity and temperature) output characteristic curve of jamming. The PV inverter MPPT, the key technology of grid connected control and islanding detection for a more in-depth research, to determine the The control strategy proposed. And on this basis, build a simulation model of the photovoltaic inverter under the environment of Matlab/SimuLink, verified the feasibility of the design. Thirdly, verified the feasibility of the scheme in, completed the hardware and software design of single phase photovoltaic grid connected inverter controller of small power, determined by TI company TMS320F2812 as the core control chip, the signal sampling circuit, write zero detection circuit and MOSFET driving circuit and peripheral hardware circuit design and software program. Finally, through building a test platform, the PV inverter output waveform. The experiment is done on the key link of the observation and analysis of the results through the oscilloscope. Show that the grid connected photovoltaic inverter to achieve the design function, to achieve the target.

【學(xué)位授予單位】：電子科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類(lèi)號(hào)】：TM615;TM464

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本文編號(hào)：1405034