本文選題：背靠背變流器 + SHEPWM�。� 參考：《安徽大學(xué)》2017年碩士論文

【摘要】：由于背靠背變流器具有功率因素可調(diào)、能量雙向流動(dòng)等優(yōu)點(diǎn),它被廣泛的應(yīng)用于可再生能源發(fā)電和微電網(wǎng)等領(lǐng)域。且隨著風(fēng)力發(fā)電系統(tǒng)等新興領(lǐng)域的快速發(fā)展,作為核心部分的背靠背變流器技術(shù)也得到了廣泛重視。因此,對(duì)于背靠背變流器控制性能的研究具有什么重要的意義。本文以三電平背靠背變流器為研究對(duì)象,論文主要針對(duì)諧波消除、損耗分析與比較等問題展開研究,論文的主要研究內(nèi)容如下:1、分析電壓型背靠背變換器的工作原理,同時(shí)介紹了 SPWM、SVPWM和SHEPWM三種調(diào)制策略的具體實(shí)現(xiàn)。2、針對(duì)SHEPWM調(diào)制策略的開關(guān)角求解,分析了一些傳統(tǒng)算法,例如多項(xiàng)式插值法、遺傳算法等,最終引出論文提出的量子遺傳算法。通過MATLAB/Simulink的S-function函數(shù)求出結(jié)果,并與遺傳算法進(jìn)行比較,搭建仿真模型帶入結(jié)果,仿真與實(shí)驗(yàn)結(jié)果驗(yàn)證分析方法可行性。3、分析功率器件工作狀態(tài)與開關(guān)過程、建立功率開關(guān)器件的損耗模型,通過仿真實(shí)驗(yàn)對(duì)在不同調(diào)制方式下的損耗進(jìn)行分析比較。4、搭建電壓型背靠背變換器的硬件電路平臺(tái),其中包括主電路、驅(qū)動(dòng)電路、信號(hào)采樣電路和控制電路的設(shè)計(jì)與調(diào)試,實(shí)驗(yàn)與仿真結(jié)果驗(yàn)證本文研究可行性與有效性。
[Abstract]:The back-to-back converter is widely used in renewable energy generation and microgrid because of its advantages of adjustable power factor and bidirectional energy flow. With the rapid development of wind power system and other emerging fields, back-to-back converter technology, which is the core part, has been paid more and more attention. Therefore, it is of great significance to study the control performance of back-to-back converter. In this paper, the three-level back-to-back converter is taken as the research object. The thesis mainly focuses on harmonic elimination, loss analysis and comparison. The main research contents of this paper are as follows: 1. The working principle of voltage type back-to-back converter is analyzed. At the same time, this paper introduces the realization of SPWM-SVPWM and SHEPWM modulation strategy. Aiming at the solution of switching angle of SHEPWM modulation strategy, some traditional algorithms, such as polynomial interpolation method and genetic algorithm, are analyzed. Finally, the quantum genetic algorithm proposed in this paper is introduced. The results are obtained by S-function of MATLAB/Simulink, and compared with genetic algorithm. The simulation model is built to bring the results into the results. The simulation and experimental results verify the feasibility of the analysis method. The working state of power devices and the switching process are analyzed. The loss model of power switch device is established, and the loss under different modulation modes is analyzed and compared by simulation experiment. The hardware circuit platform of voltage type back-to-back converter is built, which includes main circuit and drive circuit. The design and debugging of signal sampling circuit and control circuit, experimental and simulation results verify the feasibility and effectiveness of this study.
【學(xué)位授予單位】：安徽大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TM46

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本文編號(hào)：1954259