【摘要】：科學(xué)技術(shù)的發(fā)展使得雙向直流變換器無(wú)論是在體積、重量、開(kāi)關(guān)損耗、穩(wěn)態(tài)精度、動(dòng)態(tài)響應(yīng)、轉(zhuǎn)化效率方面均取得了長(zhǎng)足進(jìn)展。但是單一的控制策略很難滿(mǎn)足系統(tǒng)對(duì)魯棒性的要求,而且有限的拓?fù)浣Y(jié)構(gòu)也存在著不足:控制方式復(fù)雜,轉(zhuǎn)換效率低、能量損失大等。隨著現(xiàn)代控制技術(shù)的發(fā)展和先進(jìn)控制策略的廣泛應(yīng)用,為直流變換器的控制方案提供了多種選擇,也為改進(jìn)和完善控制效果拓展了更大的發(fā)展空間。引起了越來(lái)越多人的關(guān)注和興趣。本文對(duì)雙向直流變換器的拓?fù)浜涂刂撇呗赃M(jìn)行了深入的研究。首先,對(duì)雙向直流變換器的應(yīng)用領(lǐng)域、現(xiàn)狀與發(fā)展、軟開(kāi)關(guān)技術(shù)的發(fā)展進(jìn)行了介紹與回顧,討論了幾種控制策略,對(duì)各種控制策略的利弊進(jìn)行了對(duì)比介紹,隨后對(duì)雙向直流變換器的拓?fù)溥M(jìn)行了研究并對(duì)升壓模式和降壓模式的原理、運(yùn)行過(guò)程、控制方式、進(jìn)行了詳細(xì)介紹,同時(shí)對(duì)引起的電壓尖峰問(wèn)題對(duì)其產(chǎn)生的機(jī)理和解決方案進(jìn)行了論述。接下來(lái)對(duì)研究對(duì)象的數(shù)學(xué)模型進(jìn)行了研究。建立了雙向直流變換器的模型。其次,對(duì)拓?fù)涞母髌骷䥇?shù)進(jìn)行了詳細(xì)的分析設(shè)計(jì)與計(jì)算,包括變壓器變比、超前滯后橋臂并聯(lián)電容、諧振電感、死區(qū)時(shí)間、輸出濾波電感電容等。通過(guò)Matlab/simulink軟件搭建了仿真系統(tǒng),進(jìn)行了開(kāi)環(huán)仿真,驗(yàn)證了雙向直流變換器的原理和拓?fù)湓O(shè)計(jì)。與此同時(shí)設(shè)計(jì)了電壓外環(huán)和電流內(nèi)環(huán)的閉環(huán)仿真系統(tǒng),運(yùn)用工程設(shè)計(jì)法設(shè)計(jì)了 PI參數(shù)。仿真結(jié)果驗(yàn)證了設(shè)計(jì)方法和設(shè)計(jì)參數(shù)的可行性。最后,結(jié)合滑�？刂频脑砗驮O(shè)計(jì)方法進(jìn)行了分析研究,先進(jìn)行了雙向Buck-Boost非隔離直流變換器的滑�？刂品桨秆芯俊Ｍㄟ^(guò)對(duì)移相全橋直流變換器的等效分析,結(jié)合滑�？刂茖�(duì)非隔離型直流變換器的控制方案,完成了對(duì)移相全橋直流變換器的滑模控制,并通過(guò)Matlab/simulink軟件進(jìn)行了仿真,驗(yàn)證了滑模控制在抑制擾動(dòng)方面的優(yōu)異表現(xiàn)及設(shè)計(jì)方案的可行性。
[Abstract]:With the development of science and technology, bidirectional DC / DC converters have made great progress in volume, weight, switching loss, steady-state accuracy, dynamic response and conversion efficiency. However, a single control strategy is difficult to meet the requirements of robustness of the system, and there are some shortcomings in the limited topology, such as complex control methods, low conversion efficiency, large energy loss and so on. With the development of modern control technology and the wide application of advanced control strategies, it provides a variety of options for DC converter control schemes, and also opens up a greater development space for improving and improving the control effect. Has aroused more and more people's attention and interest. In this paper, the topology and control strategy of two-way DC converter are studied. Firstly, the application field, current situation and development of bi-directional DC / DC converter and the development of soft switching technology are introduced and reviewed, several control strategies are discussed, and the advantages and disadvantages of various control strategies are compared. Then, the topology of bi-directional DC / DC converter is studied, and the principle, operation process and control mode of boost mode and step-down mode are introduced in detail. At the same time, the mechanism and solution of the voltage spike are discussed. Then the mathematical model of the research object is studied. The model of bidirectional DC / DC converter is established. Secondly, the device parameters of the topology are analyzed and calculated in detail, including transformer variable ratio, parallel capacitance of lead-lag arm, resonant inductance, dead-time, output filter inductor capacitance and so on. The simulation system is built by Matlab/simulink software and the open loop simulation is carried out to verify the principle and topology design of the bi-directional DC / DC converter. At the same time, the closed-loop simulation system of voltage outer loop and current inner loop is designed, and the PI parameters are designed by using engineering design method. The simulation results verify the feasibility of the design method and design parameters. Finally, the principle and design method of sliding mode control are analyzed and studied. Firstly, the sliding mode control scheme of bi-directional Buck-Boost non-isolated DC / DC converter is studied. Through the equivalent analysis of phase-shifted full-bridge DC / DC converter and the control scheme of sliding mode control for non-isolated DC / DC converter, the sliding mode control of phase-shifted full-bridge DC / DC converter is completed, and the simulation is carried out by Matlab/simulink software. The excellent performance of sliding mode control in restraining disturbance and the feasibility of design scheme are verified.
【學(xué)位授予單位】：哈爾濱工程大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類(lèi)號(hào)】：TM46

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