摘 要
隨著微型計(jì)算機(jī)應(yīng)用的日益普及及信息處理技術(shù)的不斷發(fā)展，對(duì)電網(wǎng)供電質(zhì)量提出了更高的要求。一是要解決市電中斷或時(shí)變對(duì)計(jì)算機(jī)等負(fù)載產(chǎn)生的不良影響，二是要保證輸出優(yōu)質(zhì)的正弦波。因此，引入了一種新型的比間斷電源技術(shù)（Uninterruptible Power System,簡(jiǎn)稱(chēng)UPS）。
UPS是一種含有蓄能的裝置（常用蓄電池蓄能），以逆變器為主要組成部分的恒壓，恒頻電源設(shè)備，主要用于給計(jì)算機(jī)，計(jì)算機(jī)網(wǎng)絡(luò)系統(tǒng)或其他電力設(shè)備提供不間段的電力供應(yīng)。當(dāng)市電正常時(shí)，UPS將市電整流通過(guò)逆變器或直接穩(wěn)壓后供給負(fù)載使用，此時(shí)，UPS就是一臺(tái)交流穩(wěn)壓器，同時(shí)還向機(jī)內(nèi)的蓄電池充電。當(dāng)市電發(fā)生中斷等情況時(shí)，UPS立即將電池的電能通過(guò)逆變轉(zhuǎn)換的方法向負(fù)載繼續(xù)供電，使負(fù)載維持正常的工作，并保護(hù)負(fù)載，硬件不受損壞。
UPS是一種向負(fù)載提供不間斷，優(yōu)質(zhì)，高效，可靠的交流電能，并且具有保護(hù)和監(jiān)視監(jiān)控功能的供電設(shè)備。UPS對(duì)于計(jì)算機(jī)及其網(wǎng)絡(luò)，通信，金融，電力，交通，國(guó)防及高等院校，科研院所等部門(mén)的供電起著關(guān)鍵的作用。


關(guān)鍵詞:整流 逆變 恒頻電源






Abstract
The increasingly popularization reaches constantly developing of information processing technology along with what the microcomputer was applied, and the power supply quality was put forward the higher requirement to the electrical network. Be to solve local junction circuit interrupt or harmfully influence that the trend change of the times is given rise to to computer etc load, and secondly will pledge the sine wave to send out the high quality.Therefore it is new than being disconnected the power supply technology ( Uninterruptible Power System, is called for short UPS) to lead one kind.
UPS is the one kind of device ( storage battery in common use stores up the ability ) that contains to store up the ability, and becoming the permanent pressure that the ware is the major component with contrary, the permanent frequency power equipment is chiefly used to the computer, the power supply of section between computer network system or others' electric power equipment provides not. When the local junction circuit often, supplying the load use
after UPS passes through the local junction circuit rectification against becomes the ware or directly the steady pressure, this moment, UPS is one Taiwan AC voltage regulator, and the at the same time still storage battery to the machine is charged. Occurring interrupt etc when the local junction circuit during circumstances, UPS's immediately electric energy with the battery by way of contrary becomes the method changed and continues supplying power to the load, and making the green work of load keeping, and protects the load, the hardware is not received damaging.
The UPS is one kind provides not being disconnected to the load, the high
quality, and high efficiency, the fail-safe alternating current ability, and
possesses that the protection and the supervision supervises the power supply
of function equipment. UPS is as for computer and his cross-domain communication,
and communicating by letter, the key effect is being taked in the power supply
of the department that the scientific research courtyard waits to the traffic to power to finance to national defence and colleges and universities.

目 錄

第1章 概論
1.1 UPS的特點(diǎn)及分類(lèi)
　　　　1.1.1 UPS的定義及特點(diǎn)
1.1.2 UPS的分類(lèi)
1.2 后備式UPS的電路結(jié)構(gòu)和工作原理
1.2.1 主要組成部分
1.2.2 后備式UPS
第2章 UPS電源中的常用電路
2.1 理想運(yùn)算放大器
2.2 比較器
2.2.1 電壓比較器
2.2.2 雙限電壓比較器
2.2.3 遲滯電壓比較器
2.3 運(yùn)算放大器
2.3.1 反相比例放大器
2.3.2 同相比例放大器
2.3.3 電壓差動(dòng)比例放大器
2.3.4 電壓跟隨器
第3章 UPS—500型電源的性能
3.1 基本特性
3.2 后備式方波輸出UPS—500 不間斷電源的工作原理
3.2.1 UPS—500 不間斷電源框圖
3.2.2 PWM脈寬調(diào)制及驅(qū)動(dòng)線路
3.2.3 市電供電—逆變器供電轉(zhuǎn)換控制線路的工作原理
3.2.4 UPS電源工作狀態(tài)指示電路
3.2.5 電池電壓過(guò)低及過(guò)流保護(hù)電路
3.2.6 輔助電源及電池充電回路
3.2.7 自動(dòng)穩(wěn)壓及干擾控制線路
附錄 UPS-500型不間斷電源工作點(diǎn)的調(diào)整
常見(jiàn)故障及其排除方法
概 論
１.１ UPS的特點(diǎn)及分類(lèi)
1.1.1 UPS的定義及特點(diǎn)
UPS的英文全稱(chēng)是Uninterruptible Power System，意為不間斷電源系統(tǒng)，既一種能為負(fù)載提供連續(xù)電能的供電系統(tǒng)。它的產(chǎn)生完全是當(dāng)代社會(huì)計(jì)算機(jī)技術(shù)，信息技術(shù)以及相關(guān)產(chǎn)業(yè)飛速發(fā)展的必然結(jié)果。隨著計(jì)算機(jī)在各行各業(yè)中的廣泛應(yīng)用，越來(lái)越多的重要數(shù)據(jù)，圖象和文字要由計(jì)算機(jī)來(lái)處理和存儲(chǔ)，如果突然停電，計(jì)算機(jī)內(nèi)部隨機(jī)存儲(chǔ)器中的數(shù)據(jù)和程序就會(huì)丟失或損壞，將給工作代來(lái)許多的麻煩。同時(shí)，電網(wǎng)中的一些強(qiáng)脈沖尖峰，高能電浪涌等干擾也會(huì)引起計(jì)算機(jī)的誤操而造成不必要的損失。另外，計(jì)算機(jī)內(nèi)部的濾波電容放電只能維持計(jì)算機(jī)工作8~10ms的時(shí)間，如果超過(guò)這個(gè)時(shí)間，計(jì)算機(jī)就會(huì)進(jìn)入自檢重啟狀態(tài)。為了避免出現(xiàn)這種情況，必須設(shè)計(jì)一種電源系統(tǒng)，它能在停電后10ms以?xún)?nèi)恢復(fù)對(duì)負(fù)載的供電，這就是今年來(lái)出現(xiàn)并廣泛應(yīng)用的UPS系統(tǒng)。UPS作為計(jì)算機(jī)的重要外設(shè)，已從最初的提供后備時(shí)間的單一功能發(fā)展到今天提供后備時(shí)間及改善電網(wǎng)質(zhì)量的雙重功能，在保護(hù)計(jì)算機(jī)數(shù)據(jù)、改善電網(wǎng)質(zhì)量、防止停電和電網(wǎng)污染對(duì)用戶(hù)造成危害等..