本文選題：開(kāi)關(guān)電源 + 零電壓開(kāi)關(guān)　； 參考：《廣東工業(yè)大學(xué)》2014年碩士論文

【摘要】：電源是各種電力、電子等設(shè)備必不可少的電力源泉。開(kāi)關(guān)電源具有效率高、功耗低、體積小、質(zhì)量輕等顯著優(yōu)點(diǎn),電源效率可達(dá)到80%以上,遠(yuǎn)遠(yuǎn)高于線性電源的轉(zhuǎn)換效率。開(kāi)關(guān)電源有著廣泛的發(fā)展前景,是電源設(shè)計(jì)制作的發(fā)展方向,也是當(dāng)今大功率電源研究的主流方向。其應(yīng)用行業(yè)廣泛,既包括工業(yè)設(shè)備領(lǐng)域的電鍍、勵(lì)磁等行業(yè),也包括民用領(lǐng)域的通信、計(jì)算機(jī)、家用電器、交通設(shè)施等。這類(lèi)領(lǐng)域?qū)﹄娫摧敵龅男枨笥幸粋€(gè)共同的特點(diǎn)：大功率、大電流。然而,由于電流較大的特性,設(shè)備損耗問(wèn)題則顯得尤為嚴(yán)重,這意味著提高效率是此類(lèi)整流器的重點(diǎn)與難點(diǎn)。 基于以上需求,本文首先介紹了大功率的開(kāi)關(guān)電源的發(fā)展概況及其拓?fù)浣Y(jié)構(gòu),詳細(xì)分析了帶有變壓器隔離的開(kāi)關(guān)電源中DC-DC變換部分的拓?fù)浣Y(jié)構(gòu)種類(lèi),在此基礎(chǔ)上選擇了最合適的大功率開(kāi)關(guān)電源拓?fù)洹Ｑ芯苛嗽陂_(kāi)關(guān)電源的變壓器次級(jí)整流中引入的同步整流技術(shù),并結(jié)合移相全橋軟開(kāi)關(guān)技術(shù)(PS-ZVS)分析了所選擇的的大功率開(kāi)關(guān)電源同步整流器的電路運(yùn)行原理及方式。結(jié)合大功率開(kāi)關(guān)電源設(shè)計(jì)的特點(diǎn)以及對(duì)電路的分析,對(duì)該電源的主要部分進(jìn)行了參數(shù)的計(jì)算,并依此為根據(jù)對(duì)電路各個(gè)功率開(kāi)關(guān)管元器件進(jìn)行了選擇,給出了主電路隔離變壓器的參數(shù)選擇及其原副邊電壓電流大小的計(jì)算方法以及高壓直流側(cè)、輸出側(cè)儲(chǔ)能濾波電容與電感的計(jì)算方式。 同時(shí),本文研究了基于同步整流技術(shù)的開(kāi)關(guān)電源的控制方式,提出了一種新的控制架構(gòu)的控制平臺(tái),采用相移式PWM軟開(kāi)關(guān)控制芯片UC3879和復(fù)雜可編程邏輯器件FPGA協(xié)同控制的方式,設(shè)計(jì)了以UC3879為主控芯片的核心控制板。研究了電路中功率開(kāi)關(guān)管的驅(qū)動(dòng)電路,選擇了專(zhuān)用驅(qū)動(dòng)控制芯片并設(shè)計(jì)了功率器件的專(zhuān)用驅(qū)動(dòng)電路板。采用verilog HDL硬件語(yǔ)言編寫(xiě)了FPGA的控制程序,成功實(shí)現(xiàn)了次級(jí)同步整流信號(hào)控制、PI調(diào)節(jié)器以及其他各種信號(hào)的綜合與控制。 最后,本文設(shè)計(jì)了一臺(tái)高效率的大功率移相全橋零電壓開(kāi)關(guān)同步整流器樣機(jī)作為實(shí)驗(yàn)系統(tǒng),通過(guò)在該樣機(jī)中進(jìn)行實(shí)際實(shí)驗(yàn)測(cè)試,給出了實(shí)驗(yàn)波形,證明了該設(shè)計(jì)的具有功率大、效率高等特點(diǎn)。
[Abstract]:Power is an essential source of power for all kinds of power, electronics and other equipment. Switching power supply has many advantages, such as high efficiency, low power consumption, small volume, light mass and so on. The power supply efficiency can reach more than 80%, which is far higher than the conversion efficiency of linear power supply. Switching power supply has a broad prospect of development, is the development direction of power supply design and manufacture, but also the mainstream direction of power supply research. It is widely used in many fields, including electroplating, excitation and so on in the field of industrial equipment, as well as communications, computers, household appliances, transportation facilities and so on. This field has a common demand for power output: high power, high current. However, due to the characteristics of large current, the problem of equipment loss is especially serious, which means that improving efficiency is the key and difficulty of this kind of rectifier. Based on the above requirements, this paper first introduces the development of high-power switching power supply and its topology, and analyzes in detail the types of DC-DC transform topology in switching power supply with transformer isolation. On this basis, the most suitable high power switching power supply topology is selected. This paper studies the synchronous rectifier technology introduced in the secondary rectifier of transformer of switching power supply, and analyzes the circuit operation principle and mode of the selected synchronous rectifier of high power switching power supply combined with the phase-shifted full bridge soft switching technology (PS-ZVSs). According to the characteristics of the design of high power switching power supply and the analysis of the circuit, the parameters of the main parts of the power supply are calculated, and according to this, the various components of the power switch cell of the circuit are selected. The parameter selection of the main circuit isolation transformer and the calculation method of the voltage and current at the primary and secondary sides as well as the calculation method of the capacitor and inductance of the high voltage DC side and the output side energy storage filter are given. At the same time, this paper studies the control mode of switching power supply based on synchronous rectifier technology, and puts forward a new control platform, which adopts phase shift PWM soft switch control chip UC3879 and complex programmable logic device FPGA collaborative control mode. The core control board based on UC3879 is designed. The driving circuit of power switch in the circuit is studied, the special drive control chip is selected and the special driving circuit board of power device is designed. The control program of FPGA is programmed by using verilog HDL hardware language, which successfully realizes the synthesis and control of the secondary synchronous rectifier signal control controller and other signals. Finally, a high-efficiency prototype of high-power phase-shifted full-bridge zero-voltage switch synchronous rectifier is designed as an experimental system. The experimental waveform is given through the actual test in the prototype, and the power of the design is proved to be large. High efficiency and other characteristics.
【學(xué)位授予單位】：廣東工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類(lèi)號(hào)】：TM461

【引證文獻(xiàn)】

相關(guān)期刊論文 前1條

1 侯學(xué)龍;馬云瓏;;高電壓大功率開(kāi)關(guān)電源拓?fù)潆娐返脑O(shè)計(jì)與研究[J];電子制作;2015年09期

相關(guān)碩士學(xué)位論文 前1條

1 李治泳;大功率同步整流電路及其并聯(lián)技術(shù)研究[D];華南理工大學(xué);2015年

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本文編號(hào)：1828882