3BHE022294R0101控制處理單元,GFD233A產(chǎn)品尺寸
基于這些明顯優(yōu)勢(shì),近年來(lái),集裝箱數(shù)據(jù)中心在邊緣數(shù)據(jù)中心、戰(zhàn)爭(zhēng)\救災(zāi)應(yīng)急數(shù)據(jù)中心和一些基礎(chǔ)設(shè)施不夠完善的欠發(fā)達(dá)國(guó)家地區(qū)得到了很好的應(yīng)用。集裝箱數(shù)據(jù)中心采用物流行業(yè)廣泛使用的標(biāo)準(zhǔn)集裝箱,通常包括20尺與40尺兩種規(guī)格,與模塊化數(shù)據(jù)中心結(jié)合,將設(shè)備部署在集裝箱內(nèi),絕大部分設(shè)備采用工廠預(yù)制完成,簡(jiǎn)化數(shù)據(jù)中心現(xiàn)場(chǎng)工程,同時(shí)大大方便物流,加快部署速度。集裝箱數(shù)據(jù)中心在最初時(shí)期曾被應(yīng)用于軍事,在很多自然條件嚴(yán)酷地區(qū)
3BHE022294R0101控制處理單元,GFD233A產(chǎn)品尺寸,如:沙漠、高原,以及一些難以建立傳統(tǒng)數(shù)據(jù)的地方也得到了很多應(yīng)用,如石油、天然氣勘探地點(diǎn),遠(yuǎn)洋考察船等。冗余模塊能夠保證系統(tǒng)的可靠性,提高系統(tǒng)的可用性,即使在電源發(fā)生故障的情況下。然而,冗余模塊中的解耦二極管以熱量形式產(chǎn)生一定的功率損耗,而且可能導(dǎo)致相對(duì)較大的電壓降。并聯(lián)連接兩臺(tái)或更多電源,彼此之間以解耦的冗余模塊相連,可組建一個(gè)冗余系統(tǒng)。當(dāng)電源的輸出端發(fā)生了短路,冗余模塊可防止母線電壓短路。
為了實(shí)現(xiàn)該功能,需使用二極管或具有相似性能的解耦元器件。你或許可以為每臺(tái)電源配一個(gè)二極管,但這種方案并不完美:解耦二極管產(chǎn)生極高的熱量,從而導(dǎo)致功耗明顯增加。負(fù)載端能夠接受更高的反饋電壓并聯(lián)功能:負(fù)載平衡模式,對(duì)每臺(tái)電源的工作時(shí)間和強(qiáng)度均勻分配對(duì)系統(tǒng)中的電源輸出故障報(bào)警信號(hào)熱插拔:插拔操作無(wú)需切斷電壓當(dāng)在負(fù)載端或線纜上發(fā)生短路,電源電壓驟降,并且在冗余模塊的輸入端的電壓不再可用。但是冗余模塊中內(nèi)置的MOSFET必須時(shí)刻保持激活狀態(tài),讓短路電流以低功耗形式流通,否則,電流將被元器件中的體二極管吸收。相較于原二極管方案,這將產(chǎn)生15倍的高功耗,并損壞MOSFET。該電路還能夠在其它危急情況下被旁路,例如當(dāng)電源被接通在一個(gè)正發(fā)生短路的電路,或者當(dāng)輸入電壓發(fā)生反極性情況。
電壓降僅50mV
將MOSFET作為解耦元器件,還可以顯著降低電壓降。標(biāo)準(zhǔn)冗余模塊中的二極管可能在輸入端和輸出端之間導(dǎo)致高達(dá)500mV的電壓降。但是如果是采用了MOSFET的新型冗余模塊,這種情形將得以有效的改善。例如普爾世冗余模塊YR80.241,在為40A負(fù)載供電時(shí),其輸入端與輸出端之間的電壓降僅不到50mV。
the equipment color on the monitoring screen and the equipment operation status indication in the dialog box are associated with the operation status mark fed back on site. The equipment operation status can be visually judged according to the equipment color on the monitoring screen and the equipment operation status indication in the dialog box, so as to facilitate the rapid judgment of the fault cause.
4 Conclusion
Through the application of PLC system in the coke discharge system of CDQ, the centralized control, monitoring and management of the coke discharge process are realized, and the on-site unattended operation under normal production conditions is achieved. Through practice, the automatic control process not only greatly improves the stability and reliability of the CDQ system, but also improves the cooperation efficiency of the whole CDQ system, ensuring the smooth progress of production, but also has significant economic benefits. The winch system is used to transport the mined raw coal underground.