推荐-10VA后备式UPS电源设计 精品

1000VA后备式UPS电源设计

摘要

随着信息技术的发展，UPS逐渐被广泛地应用于银行、证券、军事、医疗、航

空航天等众多领域。然而，我国目前仅有少数地区刚刚解决了电力紧张的问题，大部分地区和大城市还面临着电力供应紧张的迫切问题，供电质量更是不能得到保证。但即使是在早已实现电气现代化的美国和其它发达国家，电网的质量也是非常重要的。由于电网本身的问题与各种偶然因素的作用，电压浪涌，电磁噪声，持续电压偏高，持续低压等电网不良现象在发达国家也是时有发生，甚至还可能发生短时间停电。来自电网的不良因素还有，电源电压瞬时或长时间的下陷、浪涌和中断；电源频率的漂移和不稳；电源输入波形畸变；各种尖峰干扰和噪音等等。这一切对于高精度的敏感仪器和不能中断的设备来说是非常有害的。因此研发一种可靠的电源就显得尤其重要，而UPS是一种很好的电力资源,UPS起始是单纯的作为一种备用电源，但现在已经发展成为一种具备稳压、稳频、抗电磁和射频干扰、抗电压浪涌等功能的电力保护系统。因此对UPS电源的研究是顺应社会发展的趋势，而后备式UPS 电源发展的较早，技术相对比较成熟，而且具有结构简单、经济实惠、安全可靠等优点而在社会上应用的比较广泛，所以对后备式UPS的研究就显得尤为重要。

本文首先对当前UPS的所有形式进行分析、综合，在其基础上确定了主电路拓补结构，并提出了一套基于SPWM控制的单相后备式UPS电源的设计方案。在此基础上本文采用模块化的设计方法，先将其分成几个功能模块，然后按照一定的次序，对各个功能模块进行分析论证，并针对本文研究课题筛选出一套适合本文要求的方案。

在对各个功能模块进行筛选的过程中，本文对各个功能模块的特点及其发展进行详细的介绍。与此同时，本文还通过一定的算法根据本文的要求计算选择功能电子元器件。

最后，文章还对UPS各种辅助电路的设计进行了全面的描述，并详细的分析了各个电路组成、功能与工作原理。

关键词:不间断电源，逆变，模块化设计，功能模块、SPWM控制技术

Abstract

Along with the information technology development, UPS widely is applied gradually in the bank, the negotiable securities, the military, the medical service, the

aerospace and so on the multitudinous domain. However, our country only had the minority area just to solve the electric power tense problem at present, the majority of areas and the big city also faced the electric power supply tense urgent question, the power supply quality cannot obtain the guarantee. But even if is already is realizing electrical modernization US and other developed countries, the electrical network quality also is must often important. As a result of the electrical network itself question with each kind of accidental factor function, the voltage surge, the electromagnetism noise, continues the voltage to be high, continues electrical network undesirable tendency and so on the low pressure also is sometimes occurs in the developed country, even also possibly has the short time power cut. es from the electrical network not good factor also to have, the supply voltage flickers now and then the long time to undercut, the surge and the severance; The supply frequency drifting and is not steady; Mains input waveform distortion; Each kind of peak disturbance and noise and so on. All these the equipment which and cannot sever regarding the high accuracy sensitive instrument said is extremely harmful. Therefore researches and develops one kind of reliable power source to appear especially importantly, but UPS is one kind of very good electric power resources,The UPS outset is the pure achievement one kind of emergency power supply, but now already developed into one kind to have function the and so on constant voltage, steady frequency, anti- electromagnetism and radio-frequency interference, anti- voltage surge electric power protection system. Therefore is plies with the social development to the UPS power source research the tendency, but the reserve UPS power source develops early, technology relative quite mature, moreover has the structure simply, economical, safe reliable and so on the merit but the application quite is widespread in the society, therefore appears to the reserve UPS research especially importantly. Therefore this article plied with the UPS current development tendency, proposes one kind based on PWM the control technology single-phase reserve UPS power source design method.

This article first carries on the analysis, the synthesis to current UPS all forms, had determined in its foundation the main circuit develops makes up the structure, and proposed a set based on PWM the control single-phase reserve UPS power source design proposal. This article uses modular in this foundation the design method, divides into first it several functions modules, then according to the certain order, carries on the analysis