【摘要】：隨著工業(yè)化進(jìn)程、現(xiàn)代化水平的不斷提高，電力電子的發(fā)展也越來越迅速，新技術(shù)的應(yīng)用已對(duì)電力電子設(shè)備提出更高的要求。在這樣的發(fā)展趨勢(shì)下，開關(guān)電源的功率和頻率要求也逐步提高。本文主要對(duì)基于TMS320F2812的LCC諧振變換器進(jìn)行研究。 LCC諧振型變換器可以實(shí)現(xiàn)開關(guān)管的軟開關(guān)，降低變換器的開關(guān)噪聲和開關(guān)損耗。軟開關(guān)技術(shù)具有開關(guān)頻率高、效率高、開關(guān)損耗小、開關(guān)應(yīng)力小、體積小、重量輕等優(yōu)點(diǎn)，是高效電源的發(fā)展方向。采用TMS320F2812實(shí)現(xiàn)全數(shù)字控制的開關(guān)電源，可提高輸出電壓的精度和穩(wěn)定性。控制算法通過軟件編程實(shí)現(xiàn)，，簡(jiǎn)單明了，在有其它需要的情況下，只需改變程序即可選擇不同的控制功能。 本文首先分析LCC諧振變換器的工作過程和工作原理，建立變換器的穩(wěn)態(tài)模型及其等效電路，結(jié)合系統(tǒng)設(shè)計(jì)指標(biāo)設(shè)計(jì)各個(gè)諧振器件的參數(shù)。其次，在建立LCC諧振變換器小信號(hào)模型的基礎(chǔ)上，利用Saber仿真設(shè)計(jì)控制電路，實(shí)現(xiàn)系統(tǒng)的閉環(huán)控制。然后，利用TMS320F2812進(jìn)行DSP部分的設(shè)計(jì)，包括外圍電路、功率器件與驅(qū)動(dòng)芯片的選取，PWM波的產(chǎn)生以及死區(qū)時(shí)間補(bǔ)償?shù)膶?shí)現(xiàn)。最后按技術(shù)指標(biāo)要求設(shè)計(jì)并做出樣機(jī)，對(duì)系統(tǒng)進(jìn)行實(shí)驗(yàn)驗(yàn)證，分析測(cè)試數(shù)據(jù)和主要參數(shù)的輸出波形，結(jié)果實(shí)現(xiàn)了開關(guān)管的軟開關(guān)，證實(shí)本文參數(shù)設(shè)計(jì)方法的合理性，達(dá)到減小變換器開關(guān)損耗、提高效率的目的。因此LCC諧振型變換器的研究對(duì)于開關(guān)電源的高頻化、小型化、數(shù)字化發(fā)展提供了不少實(shí)用價(jià)值和指導(dǎo)意義。
文內(nèi)圖片：
圖片說明：整流網(wǎng)絡(luò)和濾
[Abstract]:With the process of industrialization and the continuous improvement of modernization level, the development of power electronics is becoming more and more rapid. The application of new technology has put forward higher requirements for power electronic equipment. Under such a development trend, the power and frequency requirements of switching power supply are also gradually improved. In this paper, the LCC resonant converter based on TMS320F2812 is studied. The LCC resonant converter can realize the soft switching of the switch tube and reduce the switching noise and switching loss of the converter. Soft switching technology has the advantages of high switching frequency, high efficiency, low switching loss, small switching stress, small volume, light weight and so on. It is the development direction of high efficiency power supply. The accuracy and stability of the output voltage can be improved by using TMS320F2812 to realize the all-digital control switching power supply. The control algorithm is realized by software programming, which is simple and clear. when there are other needs, different control functions can be selected by changing the program. In this paper, the working process and principle of LCC resonant converter are analyzed, the steady-state model and equivalent circuit of the converter are established, and the parameters of each resonant device are designed according to the system design index. Secondly, on the basis of establishing the small signal model of LCC resonant converter, the control circuit is designed by Saber simulation, and the closed-loop control of the system is realized. Then, TMS320F2812 is used to design the DSP part, including the selection of peripheral circuit, power device and driver chip, the generation of PWM wave and the realization of dead time compensation. Finally, according to the technical requirements, the prototype is designed and made, and the experimental verification of the system is carried out, and the test data and the output waveform of the main parameters are analyzed. The results show that the soft switch of the switch is realized, which proves the rationality of the parameter design method in this paper, and achieves the purpose of reducing the switching loss of the converter and improving the efficiency. Therefore, the research of LCC resonant converter provides a lot of practical value and guiding significance for the high frequency, miniaturization and digital development of switching power supply.
【學(xué)位授予單位】：南昌航空大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TM46

【參考文獻(xiàn)】

相關(guān)期刊論文 前8條

1 魏曉云,陳杰,曾云;DSP技術(shù)的最新發(fā)展及其應(yīng)用現(xiàn)狀[J];半導(dǎo)體技術(shù);2003年09期

2 孫向東,段龍,鐘彥儒,金舜;高壓直流LCC諧振變換器的分析與設(shè)計(jì)[J];電工技術(shù)學(xué)報(bào);2002年05期

3 夏冰;阮新波;陳武;;高壓大功率場(chǎng)合LCC諧振變換器的分析與設(shè)計(jì)[J];電工技術(shù)學(xué)報(bào);2009年05期

4 劉國繁;王迎旭;伍萍輝;;新型智能數(shù)字PID控制器及其應(yīng)用[J];電機(jī)與控制學(xué)報(bào);2006年04期

5 張祖勛;謝興菊;王志強(qiáng);;低壓大電流LCC諧振變換器研究[J];電力電子技術(shù);2010年03期

6 陳娟;張平娟;;基于DSP的高頻鏈逆變電源的設(shè)計(jì)[J];電源技術(shù);2010年11期

7 張軍鋒;劉闖;鄭巖;嚴(yán)利;;電流型LCC諧振變換器EDM電源的研究[J];電源世界;2006年03期

8 宋博巖,趙萬生,邵革良;電流型電火花加工脈沖電源的研究[J];中國機(jī)械工程;2001年04期

本文編號(hào)：2511354