本文選題：DSP控制器 + 軟開關(guān)技術(shù)��； 參考：《南京理工大學(xué)》2014年碩士論文

【摘要】：隨著電子技術(shù)的快速發(fā)展,電源系統(tǒng)的性能需要不斷提高,因此數(shù)字化和軟開關(guān)技術(shù)成為開關(guān)電源的發(fā)展熱點。本文將軟開關(guān)技術(shù)與數(shù)字化相結(jié)合,設(shè)計實現(xiàn)了基于MC56F8013芯片的移相全橋ZVS變換器。 首先,本文介紹了開關(guān)電源的發(fā)展趨勢、常見拓撲以及數(shù)字開關(guān)電源的特點,提出了數(shù)字化移相全橋ZVS變換器的設(shè)計方案。之后,分析了移相全橋ZVS變換器的控制方式和工作模態(tài),研究了占空比丟失和滯后臂軟開關(guān)等難題。 再次,本文設(shè)計了移相全橋ZVS變換器的硬件電路和控制程序。硬件設(shè)計包括主電路功率器件選型、磁性元件設(shè)計、采樣電路設(shè)計及驅(qū)動電路設(shè)計等。同時,基于控制芯片,研究了移相角生成策略,運用狀態(tài)空間平均法對移相全橋ZVS變換器進行小信號建模分析,設(shè)計PI調(diào)節(jié)器,最終,根據(jù)設(shè)計要求編寫程序流程圖,完成軟件設(shè)計。 最后,基于MATLAB軟件,對移相全橋ZVS變換器進行仿真研究,結(jié)合實際情況,給出多種仿真波形。同時,設(shè)計出基于MC56F8013芯片的500W移相全橋ZVS變換器樣機,并對樣機實驗波形及測試數(shù)據(jù)進行詳細分析,最終驗證了移相全橋ZVS變換器設(shè)計的正確性。
[Abstract]:With the rapid development of electronic technology, the performance of power supply system needs to be improved constantly, so digital and soft switching technology has become a hot spot in the development of switching power supply.In this paper, a phase-shifted full-bridge ZVS converter based on MC56F8013 chip is designed and implemented by combining soft switching technology with digitization.Firstly, this paper introduces the development trend of switching power supply, common topology and characteristics of digital switching power supply, and puts forward the design scheme of digital phase-shifted full-bridge ZVS converter.Then, the control mode and working mode of phase-shifted full-bridge ZVS converter are analyzed, and the problems such as duty cycle loss and soft switch of hysteresis arm are studied.Thirdly, the hardware circuit and control program of phase-shifted full-bridge ZVS converter are designed.Hardware design includes main circuit power device selection, magnetic element design, sampling circuit design and drive circuit design.At the same time, based on the control chip, the phase shift angle generation strategy is studied, and the state space averaging method is used to model and analyze the phase-shifted full-bridge ZVS converter, and Pi regulator is designed. Finally, the program flow chart is written according to the design requirements.Complete software design.Finally, based on the MATLAB software, the simulation of phase-shifted full-bridge ZVS converter is carried out. Combined with the actual situation, various simulation waveforms are given.At the same time, the prototype of 500W phase-shifted full-bridge ZVS converter based on MC56F8013 chip is designed, and the experimental waveform and test data of the prototype are analyzed in detail. Finally, the correctness of the design of phase-shifted full-bridge ZVS converter is verified.
【學(xué)位授予單位】：南京理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TM46

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