数字式交流净化稳压电源研究与开发

发布时间：2018-08-06 14:05

【摘要】：随着电力电子器件的不断更新,净化稳压电源的性能正在逐步提升,其在很多重要场合得到广泛应用,如医院、石油开采等。“十二五”期间,国家将深海油气开采作为重要战略,因此,在相关政策的引导下,水下生产联合测试系统以及水下生产控制系统的研究走上了快车道。数字式交流净化稳压电源作为水下生产测试系统的重要组成部分,能够实现稳压与调压功能,保障生产测试顺利进行,从而提高水下控制器的工作可靠性,减少不必要的损失。本文在传统设计方法的基础上,运用复合控制策略以及智能化操作模式有效提高电源系统的工作效率,实现参数在线监测以及系统故障诊断。本论文的主要工作及创新点如下:(1)通过对比分析,建立了单相全桥逆变模型,推导出逆变模型传递函数;采用数字PID与无差拍复合控制模式改善系统动静态性能,其中数字PID算法用于提高电压外环的控制精度,减小输出电压误差,无差拍算法用于改善电流内环的动态性能。(2)电源系统硬件开发采用模块化设计思想,部分电路给出原理图设计过程,通过参数计算与仿真分析,不断优化硬件电路参数,提高系统性能;系统软件设计主要围绕SPWM算法、串行通信、数据采集等模块展开,模块化的编程方式使程序管理更加高效;为实现电源本地测控与远程监控,系统设计了两种工作模式:本地操作、远程操作;本电源应用在联合测试系统中,现场工作环境对电源设计提出很大挑战,为确保电源可靠运行,机柜设计时,充分考虑了防潮湿、防盐雾等要求。(3)稳压电源调试分为模块调试及整机调试,经调试处理后,排除系统故障,优化设计方案;为验证电源指标,根据相关标准制定系统测试方案,利用电网模拟器、防孤岛负载器等设备,模拟电源工作状态,通过分析测试结果,判断系统工作状态,从而有针对性地给出改进方案;电源系统设计,考虑EMC影响,并给出抗干扰措施。本数字式电源实现了多功能操作,兼备传统稳压电源的净化稳压功能,随着我国深海采油以及水下生产联合测试系统的不断发展,其应用将会越加广泛。
[Abstract]:With the continuous renewal of power electronic devices, the performance of purifying and stabilizing power supply is improving step by step. It has been widely used in many important occasions, such as hospitals, oil exploitation and so on. During the 12th Five-Year Plan period, the state took deep-sea oil and gas exploitation as an important strategy. Therefore, under the guidance of relevant policies, the research of underwater production joint test system and underwater production control system has been on the fast track. As an important part of underwater production test system, digital AC purifying and stabilizing power supply can realize the function of voltage stabilization and voltage regulation, guarantee the smooth running of production test, improve the working reliability of underwater controller and reduce unnecessary loss. Based on the traditional design method, this paper uses compound control strategy and intelligent operation mode to effectively improve the working efficiency of power supply system, realize on-line monitoring of parameters and system fault diagnosis. The main work and innovations of this thesis are as follows: (1) through comparative analysis, the single-phase full-bridge inverter model is established, the transfer function of the inverter model is derived, and the dynamic and static performance of the system is improved by using digital PID and non-beat composite control mode. The digital PID algorithm is used to improve the control precision of the voltage outer loop, and the output voltage error is reduced, and the beat free algorithm is used to improve the dynamic performance of the current inner loop. (2) the modular design idea is adopted in the hardware development of the power system. Part of the circuit gives the schematic design process, through the parameter calculation and simulation analysis, continuously optimize the hardware circuit parameters, improve the system performance, the system software design mainly around the SPWM algorithm, serial communication, data acquisition and other modules, The modular programming method makes the program management more efficient. In order to realize local measurement and control of power supply and remote monitoring, the system designs two working modes: local operation, remote operation, and this power supply is applied in the joint test system. In order to ensure the reliable operation of the power supply, the design of the cabinet takes full account of the requirements of preventing moisture and salt mist. (3) the debugging of the steady voltage power supply is divided into module debugging and the whole machine debugging, after debugging and processing, In order to verify the power supply index, make the system test plan according to the relevant standards, use the power network simulator, anti-insular load device and other equipment, simulate the working state of the power supply, and analyze the test results, In order to judge the working state of the system, the improvement scheme is given, and the design of the power supply system takes into account the influence of EMC, and the anti-interference measures are given. The digital power supply realizes multi-function operation and has the purifying and stabilizing function of traditional power supply. With the continuous development of deep-sea oil production and underwater production joint test system in China, its application will be more and more extensive.
【学位授予单位】：上海工程技术大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE953;TM44

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