1000VA后备式UPS电源设计

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AbstractAlong 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. Comes 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 complies 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 complied 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 proof to each function module, and aims at this article to study the topic to screen a set to suit the plan which this article requests.In carries on screening to each function module in the process, this article carries on the detailed introduction to each function module characteristic and its the development. At the same time, this article also through certain algorithm basis this article request computation choice function electron primary device.Finally, the article also to the UPS each kind of auxiliary circuit, like the accessory power supply, the UPS control protection system, the contravariant actuation electric circuit and so on the design has carried on the comprehensive description, and detailed analysis each electric circuit composition, function and principle of work.Key Word: UPS , inversion, modular design, function module, PWM control technology目录第一章绪论 (1)1.1课题的提出及意义 (1)1.2 UPS技术发展过程 (2)1.2.1 UPS的组成 (3)1.2.2UPS最新发展动向 (5)1.2.3国内外研究现状 (7)1.2.4UPS的分类 (7)1.3本文的选题背景及主要研究工作 (8)1.3.1选题背景及研究的意义 (8)1.3.2本文的主要内容 (9)第二章单相后备式UPS电源的设计 (10)2.1 系统设计指标 (10)2.2 系统总体设计方案 (12)2.3主电路的设计 (13)2.3.1 交流自动稳压控制电路的 (13)2.3.2 SPWM控制电路的设计 (14)2.3.3 逆变电路的设计 (17)2.3.4 蓄电池选择 (19)2.3.5充电电路的设计 (21)2.3.6整流滤波电路的设计 (23)2.3.7 转换开关电路的设 (24)2.4本章小结 (27)第三章辅助电源及保护、检测单元的设计 (28)3.1市电同步电路的设计 (28)3.2检测电路的设计 (29)3.2.1电压检测电路的设计 (29)3.2.2电流检测电路的设计 (30)3.3空载保护及交流极性保护控制单元的设计 (32)3.3.1空载保护电路的设计 (32)3.3.2交流极性保护的设计 (32)3.4保护与告警电路的设计 (33)3.4.1过电压、欠电压保护电路的设计 (33)3.4.2直通、短路保护电路的设 (34)3.4.3过载保护电路的设 (34)3.4.4蓄电池欠电压保护与告警电路的设计 (36)3.5辅助电源及其显示电路的设计 (38)3.5.1辅助电源的设计 (38)3.5.2启动与关断电路的设计 (39)3.5.3指示电路的设计 (39)3.5.4工作状态指示电路的设 (40)3.6本章小结 (41)第四章结论与展望 (42)4.1 主要研究成果 (42)4.2 本文局限与展望 (42)参考文献 (44)致谢 (45)第一章绪论1.1 引言现代社会中，电能是一种使用最为广泛的能源，其应用程度是衡量一个国家发展水平的重要标志之一。