高频软开关电镀电源的研究

发布时间：2018-03-24 11:00

本文选题：高频逆变　切入点：电镀　出处：《华南理工大学》2014年硕士论文

【摘要】：随着时代的发展，传统的电镀电源已经不能满足要求。高频开关电源具有许多显著优点，广泛应用于电镀电源中。但目前高频开关电镀电源主要采用硬开关变换模式。在环境保护、能源节约、电磁干扰日益得到重视的当今社会，硬开关方式已很难满足要求。从而引出了软开关技术。采用软开关技术研究高频软开关电镀电源是电镀工艺发展的必然。本文首先介绍了电镀电源的发展过程与趋势，引出了高频软开关电镀电源。然后通过分析确定了主电路拓扑。接着具体分析了主电路的工作原理，电镀电源的硬件与软件设计。在主电路工作原理方面，本文在前人的基础上，通过分析提出了用20μH的小线性电感代替大饱和电感的方法。然后通过仿真辅助，分析了主电路的ZVS软开关的实现方式及其工作原理。该方法同样实现了滞后臂在全负载范围内的ZVS，且大大减小了电感体积，降低了成本。在电源硬件方面，完成了主电路及控制电路的硬件设计。在系统软件方面，，基于TMS320F2812芯片和TDS510仿真器，编写完成了软件系统。最后试制一台电镀电源样机，并进行了相关实验。实验结果表明其输出波形与仿真结果一致，电源输出稳定，输出波形良好，且软开关效果明显，满足设计要求。
[Abstract]:With the development of the times, the traditional electroplating power supply has been unable to meet the requirements. It is widely used in electroplating power supply. But at present, high frequency switch electroplating power supply mainly adopts hard switching mode. In today's society, environmental protection, energy saving and electromagnetic interference are paid more and more attention. It is difficult to meet the requirements of hard switching mode, which leads to the soft switching technology. It is inevitable for the development of electroplating technology to study the high frequency soft switch electroplating power supply with soft switch technology. This paper first introduces the development process and trend of electroplating power supply, leads out the high frequency soft switch electroplating power supply, then determines the topology of main circuit through analysis, and then analyzes the working principle of main circuit in detail. Hardware and software design of electroplating power supply. Based on the working principle of main circuit, this paper puts forward a method of replacing large saturation inductance with 20 渭 H small linear inductor on the basis of analysis. This paper analyzes the realization mode and working principle of ZVS soft switch in main circuit. This method also realizes the ZVSs of the hysteresis arm in the full load range, and greatly reduces the volume of inductor and the cost. In the aspect of power supply hardware, The hardware design of the main circuit and control circuit is completed, and the software system is completed based on TMS320F2812 chip and TDS510 simulator. Finally, a prototype of electroplating power supply is produced, and the experiment results show that the output waveform is consistent with the simulation results, the output of the power supply is stable, the output waveform is good, and the effect of soft switch is obvious, which meets the design requirements.
【学位授予单位】：华南理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN86

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