基于matlab的整流電路仿真分析_畢業(yè)設(shè)計(jì)-wenkub
2022-09-11 18:09:30 本頁面
【正文】 沖周期為0．016 7 s，脈沖移相角隨著控制角的變化對(duì)“相位角延遲”進(jìn)行設(shè)置。圖2 三相橋式全控整流電路仿真模型三相電源的相位互差120176。設(shè)置三個(gè)交流電壓源Va，Vb，Vc相位角依次相差120176。α0時(shí)，Ud的波形出現(xiàn)缺口，隨著α角的增大，缺口增大，輸出電壓平均值降低。寬脈沖觸發(fā)要求觸發(fā)功率大，易使脈沖變壓器飽和，所以可以采用脈沖列代替雙窄脈沖；每隔π／3換相一次，換相過程在共陰極組和共陽極組輪流進(jìn)行，但只在同一組別中換相。本文利用Simulink對(duì)三相橋式全控整流電路進(jìn)行建模，對(duì)不同控制角、橋故障情況下進(jìn)行了仿真分析，既進(jìn)一步加深了三相橋式全控整流電路的理論，同時(shí)也為現(xiàn)代電力電子實(shí)驗(yàn)教學(xué)奠定良好的實(shí)驗(yàn)基礎(chǔ)。對(duì)單相橋式可控整流電路的相關(guān)參數(shù)和不同性質(zhì)負(fù)載的工作情況進(jìn)行對(duì)比分析與研究，既進(jìn)一步加深了三相橋式全控整流電路和單相橋式可控整流電路的理論，同時(shí)也為現(xiàn)代電力電子實(shí)驗(yàn)教學(xué)奠定良好的實(shí)驗(yàn)基礎(chǔ)。常用的整流電路有三相橋式全控整流電路和單相橋式可控電路。由于整流電路涉及到交流信號(hào)、直流信號(hào)以及觸發(fā)信號(hào)，同時(shí)包含晶閘管、電容、電感、電阻等多種元件，采用常規(guī)電路分析方法顯得相當(dāng)繁瑣，高壓情況下實(shí)驗(yàn)也難順利進(jìn)行。關(guān)鍵詞：三相橋式全控整流電路，單相橋式半控整流，單相橋式全控整流，建模，仿真?、馦ATLABbased simulation analysis of the rectifier circuitAbstract:With the social production and scientific and technological development, the rectifier circuit in the automatic control system, measurement system and generator excitation system, and other fields increasingly widespread. Commonly used threephase bridge rectifier circuit with fullcontrolled singlephase bridge rectifier circuit and control circuit. As the rectifier circuit involves the exchange of signals, DC signals and trigger signals, including thyristors, capacitors, inductors, resistors and other ponents, using conventional circuit analysis method appeared to be quite plicated, highpressure situations is difficult to experiments carried out smoothly. Matlab provides a visual simulation tool Simtlink circuit simulation model can be directly set up, free to change simulation parameters and immediately available to any of the simulation results, intuitive, eliminating the need for further programming steps. In this paper, Simulink full control of threephase bridge rectifier circuit model, for different control angle, the bridge under fault conditions were simulated analysis. Controlled singlephase bridge rectifier circuit parameters and the different nature of the work load of the parative analysis and research, both to further deepen the threephase fullcontrolled bridge rectifier circuit and controlled singlephase bridge rectifier circuit theory, whil
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