本文選題：低壓輸入 + 高效率高升壓　； 參考：《南京航空航天大學(xué)》2014年碩士論文

【摘要】：隨著新能源發(fā)電技術(shù)和儲能技術(shù)的進(jìn)一步發(fā)展，低壓動力電池已經(jīng)得到了廣泛應(yīng)用，低壓直流到日常交流用電的電能轉(zhuǎn)換需求日益增多，低壓輸入逆變器在商業(yè)和民用產(chǎn)品中具有非常好的發(fā)展前景。 論文首先分析和論證了高頻鏈單級式反激逆變器及其有源鉗位軟開關(guān)技術(shù)在小功率變換場合的適用性�；诟哳l鏈逆變技術(shù)，論文研究了有源鉗位反激逆變器和低頻混合反轉(zhuǎn)橋?qū)崿F(xiàn)光伏并網(wǎng)微型逆變器的解決方案。采用輸出電流閉環(huán)控制和加入電壓前饋的MPPT算法對光伏并網(wǎng)微型逆變器進(jìn)行實(shí)時(shí)功率調(diào)節(jié)，并研制了一臺230W的原理樣機(jī)，在35V額定輸入下取得了94.2%的高轉(zhuǎn)換效率。論文研究了采用全控器件、能量雙向流動的反激逆變器拓?fù)�，為小功率航空靜止變流器提供了合適的解決方案，，并進(jìn)行了仿真分析。 針對中大功率場合，論文研究了兩級式架構(gòu)的解決方案。首先研究了兩級式逆變器中前級高升壓高效率直流變換器的實(shí)現(xiàn)。研究了雙電感電流型半橋變換器存在的漏感設(shè)計(jì)困難和電流過零諧振等問題及其解決方法，研制了一臺28V輸入、180V輸出、額定功率1kW的原理樣機(jī)，轉(zhuǎn)換效率達(dá)到92.5%。研究了倍壓輸出反激變換器的漏感能量回收利用技術(shù)及其交錯并聯(lián)均流技術(shù)，并研制了一臺28V輸入、180V輸出、額定功率1kW的原理樣機(jī)，取得了93.9%的高轉(zhuǎn)換效率。 論文最后研究了兩級式結(jié)構(gòu)中的后級逆變電路，采用雙降壓式全橋拓?fù)�，討論了該電路的一些調(diào)制方式，提出了改進(jìn)效率和減少體積重量的一些方法。論文對該電路進(jìn)行了實(shí)驗(yàn)研究，在額定功率1kW下取得了97.5%的效率。
[Abstract]:With the further development of new energy generation technology and energy storage technology, low voltage power battery has been widely used. The demand for electric energy conversion from low voltage DC to daily AC power is increasing. Low voltage input inverter has a very good prospect in commercial and civil products.
This paper first analyzes and demonstrates the applicability of high frequency chain single stage flyback inverter and active clamp soft switching technology in small power transformation. Based on the high frequency chain inverter technology, the paper studies the solution of the photovoltaic grid connected micro inverter with active clamp flyback inverter and low-frequency hybrid reverse bridge. The MPPT algorithm with loop control and voltage feedforward is used to regulate the real-time power of the photovoltaic grid connected micro inverter. A prototype of 230W is developed and the high conversion efficiency is achieved under the rated input of 35V. The paper studies the inverter topology of the full control device and the bidirectional flow of energy for the small power aeronautical static current transformer. The device provides a suitable solution and carries out simulation analysis.
For medium and large power occasions, the paper studies the solution of the two stage architecture. First, the realization of the high voltage and high efficiency DC converter in the two stage inverter is studied. The problems of the leakage inductance and the current zero resonance in the dual inductor current type half bridge converter and the solution of the current zero resonance are studied. A 28V input is developed. 180V output, the principle prototype of rated power 1kW, the conversion efficiency reached 92.5%., and studied the leakage energy recovery and utilization technology of double voltage output flyback converter and its interlaced parallel current sharing technology, and developed a prototype of 28V input, 180V output and rated power 1kW, and achieved 93.9% high conversion efficiency.
At the end of this paper, the post stage inverter circuit in the two stage structure is studied. Using the double step-down full bridge topology, some modulation methods of the circuit are discussed, and some methods to improve the efficiency and reduce the volume weight are proposed. The paper has carried out an experimental study on the circuit and achieved a 97.5% efficiency under the rated power of 1kW.
【學(xué)位授予單位】：南京航空航天大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TM464

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