模块化UPS若干关键技术研究

发布时间：2018-01-04 17:32

本文关键词：模块化UPS若干关键技术研究　出处：《西南交通大学》2017年硕士论文　论文类型：学位论文

【摘要】：不间断电源UPS(Uninterrupted Power Supply)作为一种含有储能、能量转换及电力净化等功能的电源设备,已广泛应用于银行、医院、机场、铁路、政府等重要的场所。人类对UPS可靠性和高效率的要求越来越高,而模块化UPS作为未来发展方向,研发效率更高、可靠性更好的UPS将产生非常高的经济价值。UPS逆变器的拓扑结构对UPS的效率有重要影响,而多机并联是UPS可靠性提升的关键技术,同时在UPS实际应用中也有很多提升UPS系统效率及可靠性的运行方式。因此本文将从这三方面进行深入的研究,提升UPS的综合性能。本文主要内容有以下:介绍了二极管钳位三电平半桥逆变器的结构和工作原理,建立了基于双环控制的三电平半桥逆变器控制模型。同时,给出了一种三电平逆变器PWM驱动的产生方案,分析了 PWM驱动半周切换的逻辑以及逆变器限流时的PWM驱动逻辑。介绍了无互连线下垂均流并联控制技术的基本原理。针对无互连线并联存在对输出电压采样精度要求高的问题,分析输出电压采样精度对UPS并联系统的影响,并提出相应的改善策略,通过实验验证其可行性。给出了一种在分散旁路模块化UPS中实现经济模式的控制方案,研究了实现智能休眠管理的技术要点,同时分析了负载总线同步控制的原理,给出了一种消除了单点故障的负载总线同步控制方案。
[Abstract]:Uninterruptible power supply UPS (Uninterrupted Power Supply) as a power supply equipment with energy storage, energy conversion and power purification function, has been widely used in banks, hospitals, airports, railways, government and other important places. The human UPS reliability and efficiency of the increasingly high, while the modular UPS as the future the direction of development, development of high efficiency, efficiency of topology better reliability of UPS will have very high economic value of.UPS inverter for UPS, and multiple parallel machines is the key technology of UPS reliability improvement, but also a lot of improved efficiency and reliability of the UPS system operation in UPS application. Therefore this paper from the three aspects of in-depth study, improve the comprehensive performance of UPS. The main contents of this paper are the following: This paper introduces the structure and working principle of diode clamped three level inverter, is established Three level half bridge inverter control model based on double loop control. At the same time, given a scheme of three level inverter PWM drive, analyzes the PWM driver half cycle switching logic and inverter current limiting the PWM drive logic. This paper introduces the basic principle of non interconnect droop flow parallel control technique. The interconnect parallel sampling requires high precision of output voltage sampling, analysis accuracy of UPS parallel system output voltage, and puts forward the corresponding improvement strategy, the feasibility is verified through experiment. Gives an economic model in the decentralized bypass in modular UPS control scheme, study the technology of intelligent dormancy management at the same time, analyzed the principle of load bus synchronization control, a load bus eliminates the single point of failure synchronization control scheme.

【学位授予单位】：西南交通大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TN86

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