低纹波恒流电源的研制

发布时间：2018-02-05 03:25

本文关键词： 开关电源低纹波移相全桥倍流整流　出处：《北京交通大学》2014年硕士论文　论文类型：学位论文

【摘要】：摘要：随着我国军事,医疗,工业等领域的快速发展,半导体激光器得到了越来越广泛的应用,因此,激光用电源也得到了快速发展。半导体激光器因其自身特性对驱动电源的要求非常高,它需要纹波低,精度高,稳定度高,效率高的恒流电源。传统的线性电源因其自身体积大、效率低等缺点无法得到进一步的发展。而开关电源以其自身体积小,功率密度高,效率高,控制精度高等优点得到了广泛的应用。因此,研制成本低,体积小,纹波小,效率高,稳定度高的恒流开关电源有着相当重要而深远的意义,这对我国各个领域的快速发展都起到至关重要的作用。本文的第二章分析了纹波的种类、危害、对设备的影响,并且分析了常用的纹波抑制方法。并在此基础之上,第三章分析了移相全桥倍流整流电路的拓扑和工作原理,给出了移相全桥倍流整流电路的全部工作过程,分析了移相全桥电路的软开关范围以及软开关特性对开关噪声的影响,同时分析了倍流整流电路对纹波的抑制作用和原理。第四章给出了移相全桥倍流整流低纹波恒流电源硬件的参数设计以及软件的实现方案,同时分析了采样时刻对系统稳定性的影响。最后根据设计方案做出了一台以DSP为核心控制器的低纹波恒流电源样机。第五章给出了仿真分析和实验结果。
[Abstract]:Abstract: with the rapid development of military, medical, industrial and other fields in China, semiconductor lasers have been more and more widely used. Because of its own characteristics, semiconductor laser requires a constant current power supply with low ripple, high precision, high stability and high efficiency. The traditional linear power supply can not be further developed because of its large volume and low efficiency, while the switching power supply has the advantages of small volume, high power density and high efficiency. The advantages of high control accuracy have been widely used. Therefore, the development of a low cost, small volume, small ripple, high efficiency, high stability of the constant current switching power supply has a very important and far-reaching significance. This plays a vital role in the rapid development of all fields in our country. The second chapter of this paper analyzes the types of ripple, harm, the impact on equipment, and analyzes the common methods of ripple suppression. And on this basis. In chapter 3, the topology and working principle of phase-shifted full-bridge current-doubling rectifier are analyzed, and the whole working process of phase-shifted full-bridge current-doubling rectifier is given. The soft switching range of phase-shifted full-bridge circuit and the influence of soft switching characteristics on switching noise are analyzed. At the same time, the effect and principle of current doubling rectifier on ripple suppression are analyzed. In chapter 4th, the hardware parameter design and software implementation of phase shift full bridge current doubling rectifier low ripple constant current power supply are given. At the same time, the influence of sampling time on the stability of the system is analyzed. Finally, a low ripple constant current power supply prototype with DSP as the core controller is made according to the design scheme. The simulation analysis and experimental results are given in Chapter 5th.
【学位授予单位】：北京交通大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN86

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