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标题: [求助]开关电源及蓄电池的选配 [查看完整版帖子] [打印本页]
时间: 2007-11-27 14:14
作者: super__m
标题: [求助]开关电源及蓄电池的选配
<p>传输机房开关电源及蓄电池的选配问题</p><p>我设备功率总共是1500W左右,这个时候,我在设计中配置-48V/50A开关电源,-48V/150mA蓄电池,请问这个配置有无问题,在知道功率的情况下,大家是如何计算电源及蓄电池的容量的?</p>
时间: 2007-11-27 14:19
作者: 26cici
<p>你得设定一个需供电的时间,例如2小时,然后根据公式<span lang="EN-US" style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: "Times New Roman"; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;"><span style="OSITION: relative; TOP: 14pt; mso-text-raise: -14.0pt;"><shapetype id="_x0000_t75" stroked="f" filled="f" path="m@4@5l@4@11@9@11@9@5xe" coordsize="21600,21600" ospt="75" opreferrelative="t"></shapetype><span style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: "Times New Roman"; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";"><span style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: "Times New Roman"; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">Q</span><span style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: "Times New Roman"; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">
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[此贴子已经被作者于2007-11-27 14:27:46编辑过]
时间: 2007-11-27 16:36
作者: lily6189
设所需供电时长为10H,则蓄电池容量为1500/50×10=300AH,配置整流模块为(0.15×300+1500/50)/50=2,考虑热备份整流模块数为2+1=3。你的配置是在开玩笑,150mA是什么概念!电池的配置需要服从负载及备用供电时长,有了电池容量及负载电流才可以配置整流模块。
时间: 2007-11-27 21:51
作者: super__m
<p>1楼公式看不懂</p><p>2楼觉得我的有问题吗?</p>
时间: 2007-11-27 21:58
作者: lily6189
-48V/150mA蓄电池是什么概念?MAH还是负载电流!公式没错,只是没有标注。
时间: 2007-11-28 11:37
作者: super__m
<p>单位写错了..应该是AH</p><p>如果150W是不是该30A的开关电源,然后按1小时电池时间,要40A时的电池了?</p>
时间: 2007-11-28 12:00
作者: tyfyhl
<p>电源的配置建议还是配大一点</p><p>为将来留有余地</p>
时间: 2007-11-28 13:22
作者: lily6189
<p>如果150W是不是该30A的开关电源,然后按1小时电池时间,要40A时的电池了?</p><p>如果是150W,放电时间为1小时,电池容量为150/50*1=3AH</p><p>电池容量为=负载功率/电压*所需供电时间</p><p>开关电源整流模块数=(0.15*蓄电池容量+负载电流)/整流模块单体额定输出电流,该结果只能进位不能舍去;同时考虑N+1备份</p><p>这样能明白不</p>
时间: 2007-11-28 13:36
作者: super__m
<p>谢谢了,了解了</p><p>一般整流模块单体输出电流是多少?我们一般设计时只考虑容量,不会考虑有几块</p>
时间: 2007-11-29 09:19
作者: lili_bjtu
<p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 18pt; TEXT-INDENT: -18pt; mso-list: l0 level1 lfo1; tab-stops: list 18.0pt;"><span lang="EN-US" style="FONT-FAMILY: Tahoma; mso-bidi-font-size: 10.5pt; mso-fareast-font-family: Tahoma;"><span style="mso-list: Ignore;">开关电源设计中要确定两个问题:一是蓄电池容量;二是开关电源规格。</span></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 18pt; TEXT-INDENT: -18pt; mso-list: l0 level1 lfo1; tab-stops: list 18.0pt;"><span lang="EN-US" style="FONT-FAMILY: Tahoma; mso-bidi-font-size: 10.5pt; mso-fareast-font-family: Tahoma;"><span style="mso-list: Ignore;">1、<span style="FONT: 7pt "Times New Roman";">
</span></span></span><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: Tahoma; mso-hansi-font-family: Tahoma; mso-bidi-font-family: Tahoma;">蓄电池容量</span><span lang="EN-US" style="FONT-FAMILY: Tahoma; mso-bidi-font-size: 10.5pt;">=</span><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: Tahoma; mso-hansi-font-family: Tahoma; mso-bidi-font-family: Tahoma;">负载功率</span><span lang="EN-US" style="FONT-FAMILY: Tahoma; mso-bidi-font-size: 10.5pt;">/</span><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: Tahoma; mso-hansi-font-family: Tahoma; mso-bidi-font-family: Tahoma;">电压</span><span lang="EN-US" style="FONT-FAMILY: Tahoma; mso-bidi-font-size: 10.5pt;">*</span><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: Tahoma; mso-hansi-font-family: Tahoma; mso-bidi-font-family: Tahoma;">电池备用时间(</span><span lang="EN-US" style="FONT-FAMILY: Tahoma; mso-bidi-font-size: 10.5pt;">AH</span><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: Tahoma; mso-hansi-font-family: Tahoma; mso-bidi-font-family: Tahoma;">),这是近似计算公式;</span><span lang="EN-US" style="FONT-FAMILY: Tahoma; mso-bidi-font-size: 10.5pt;"><p></p></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 18pt; TEXT-INDENT: -18pt; mso-list: l0 level1 lfo1; tab-stops: list 18.0pt;"><span lang="EN-US" style="FONT-FAMILY: Tahoma; mso-bidi-font-size: 10.5pt; mso-fareast-font-family: Tahoma;"><span style="mso-list: Ignore;">2、<span style="FONT: 7pt "Times New Roman";">
</span></span></span><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: Tahoma; mso-hansi-font-family: Tahoma; mso-bidi-font-family: Tahoma;">高频开关电源容量</span><span lang="EN-US" style="FONT-FAMILY: Tahoma; mso-bidi-font-size: 10.5pt;">=</span><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: Tahoma; mso-hansi-font-family: Tahoma; mso-bidi-font-family: Tahoma;">蓄电池充电电流</span><span lang="EN-US" style="FONT-FAMILY: Tahoma; mso-bidi-font-size: 10.5pt;">+</span><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: Tahoma; mso-hansi-font-family: Tahoma; mso-bidi-font-family: Tahoma;">负载电流</span><span lang="EN-US" style="FONT-FAMILY: Tahoma; mso-bidi-font-size: 10.5pt;">=0.1*</span><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: Tahoma; mso-hansi-font-family: Tahoma; mso-bidi-font-family: Tahoma;">蓄电池容量</span><span lang="EN-US" style="FONT-FAMILY: Tahoma; mso-bidi-font-size: 10.5pt;">+</span><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: Tahoma; mso-hansi-font-family: Tahoma; mso-bidi-font-family: Tahoma;">负载电流(</span><span lang="EN-US" style="FONT-FAMILY: Tahoma; mso-bidi-font-size: 10.5pt;">A</span><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: Tahoma; mso-hansi-font-family: Tahoma; mso-bidi-font-family: Tahoma;">);</span><span lang="EN-US" style="FONT-FAMILY: Tahoma; mso-bidi-font-size: 10.5pt;"><p></p></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 18pt; TEXT-INDENT: -18pt; mso-list: l0 level1 lfo1; tab-stops: list 18.0pt;"><span lang="EN-US" style="FONT-FAMILY: Tahoma; mso-bidi-font-size: 10.5pt; mso-fareast-font-family: Tahoma;"><span style="mso-list: Ignore;">3、<span style="FONT: 7pt "Times New Roman";">
</span></span></span><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: Tahoma; mso-hansi-font-family: Tahoma; mso-bidi-font-family: Tahoma;">高频开关电源整流模块数</span><span lang="EN-US" style="FONT-FAMILY: Tahoma; mso-bidi-font-size: 10.5pt;">=</span><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: Tahoma; mso-hansi-font-family: Tahoma; mso-bidi-font-family: Tahoma;">高频开关电源容量</span><span lang="EN-US" style="FONT-FAMILY: Tahoma; mso-bidi-font-size: 10.5pt;">/</span><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: Tahoma; mso-hansi-font-family: Tahoma; mso-bidi-font-family: Tahoma;">单个模块输出电流,该结果只能进位不能舍去,同时考虑</span><span lang="EN-US" style="FONT-FAMILY: Tahoma; mso-bidi-font-size: 10.5pt;">N+1</span><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: Tahoma; mso-hansi-font-family: Tahoma; mso-bidi-font-family: Tahoma;">备份;</span><span lang="EN-US" style="FONT-FAMILY: Tahoma; mso-bidi-font-size: 10.5pt;"><p></p></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: Tahoma; mso-hansi-font-family: Tahoma; mso-bidi-font-family: Tahoma;"></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: Tahoma; mso-hansi-font-family: Tahoma; mso-bidi-font-family: Tahoma;">注:整流模块有</span><chmetcnv wst="on" tcsc="0" numbertype="1" negative="False" hasspace="False" sourcevalue="25" unitname="a"><span lang="EN-US" style="FONT-FAMILY: Tahoma; mso-bidi-font-size: 10.5pt;">25A</span></chmetcnv><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: Tahoma; mso-hansi-font-family: Tahoma; mso-bidi-font-family: Tahoma;">、</span><chmetcnv wst="on" tcsc="0" numbertype="1" negative="False" hasspace="False" sourcevalue="30" unitname="a"><span lang="EN-US" style="FONT-FAMILY: Tahoma; mso-bidi-font-size: 10.5pt;">30A</span></chmetcnv><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: Tahoma; mso-hansi-font-family: Tahoma; mso-bidi-font-family: Tahoma;">、</span><chmetcnv wst="on" tcsc="0" numbertype="1" negative="False" hasspace="False" sourcevalue="50" unitname="a"><span lang="EN-US" style="FONT-FAMILY: Tahoma; mso-bidi-font-size: 10.5pt;">50A</span></chmetcnv><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: Tahoma; mso-hansi-font-family: Tahoma; mso-bidi-font-family: Tahoma;">等几种规格,假如你计算的高频开关电源容量为</span><chmetcnv wst="on" tcsc="0" numbertype="1" negative="False" hasspace="False" sourcevalue="150" unitname="a"><span lang="EN-US" style="FONT-FAMILY: Tahoma; mso-bidi-font-size: 10.5pt;">150A</span></chmetcnv><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: Tahoma; mso-hansi-font-family: Tahoma; mso-bidi-font-family: Tahoma;">,整流模块考虑</span><span lang="EN-US" style="FONT-FAMILY: Tahoma; mso-bidi-font-size: 10.5pt;">N+1</span><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: Tahoma; mso-hansi-font-family: Tahoma; mso-bidi-font-family: Tahoma;">备份,那么可以选用</span><span lang="EN-US" style="FONT-FAMILY: Tahoma; mso-bidi-font-size: 10.5pt;">7*<chmetcnv wst="on" tcsc="0" numbertype="1" negative="False" hasspace="False" sourcevalue="25" unitname="a">25A</chmetcnv></span><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: Tahoma; mso-hansi-font-family: Tahoma; mso-bidi-font-family: Tahoma;">、</span><span lang="EN-US" style="FONT-FAMILY: Tahoma; mso-bidi-font-size: 10.5pt;">6*<chmetcnv wst="on" tcsc="0" numbertype="1" negative="False" hasspace="False" sourcevalue="30" unitname="a">30A</chmetcnv></span><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: Tahoma; mso-hansi-font-family: Tahoma; mso-bidi-font-family: Tahoma;">、</span><span lang="EN-US" style="FONT-FAMILY: Tahoma; mso-bidi-font-size: 10.5pt;">4*<chmetcnv wst="on" tcsc="0" numbertype="1" negative="False" hasspace="False" sourcevalue="50" unitname="a">50A</chmetcnv></span><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: Tahoma; mso-hansi-font-family: Tahoma; mso-bidi-font-family: Tahoma;">,但是这三种配置方法中整流模块总容量分别为</span><chmetcnv wst="on" tcsc="0" numbertype="1" negative="False" hasspace="False" sourcevalue="175" unitname="a"><span lang="EN-US" style="FONT-FAMILY: Tahoma; mso-bidi-font-size: 10.5pt;">175A</span></chmetcnv><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: Tahoma; mso-hansi-font-family: Tahoma; mso-bidi-font-family: Tahoma;">、</span><chmetcnv wst="on" tcsc="0" numbertype="1" negative="False" hasspace="False" sourcevalue="180" unitname="a"><span lang="EN-US" style="FONT-FAMILY: Tahoma; mso-bidi-font-size: 10.5pt;">180A</span></chmetcnv><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: Tahoma; mso-hansi-font-family: Tahoma; mso-bidi-font-family: Tahoma;">、</span><chmetcnv wst="on" tcsc="0" numbertype="1" negative="False" hasspace="False" sourcevalue="200" unitname="a"><span lang="EN-US" style="FONT-FAMILY: Tahoma; mso-bidi-font-size: 10.5pt;">200A</span></chmetcnv><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: Tahoma; mso-hansi-font-family: Tahoma; mso-bidi-font-family: Tahoma;">,与高频开关电源容量</span><chmetcnv wst="on" tcsc="0" numbertype="1" negative="False" hasspace="False" sourcevalue="150" unitname="a"><span lang="EN-US" style="FONT-FAMILY: Tahoma; mso-bidi-font-size: 10.5pt;">150A</span></chmetcnv><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: Tahoma; mso-hansi-font-family: Tahoma; mso-bidi-font-family: Tahoma;">相比,</span><span lang="EN-US" style="FONT-FAMILY: Tahoma; mso-bidi-font-size: 10.5pt;">7*<chmetcnv wst="on" tcsc="0" numbertype="1" negative="False" hasspace="False" sourcevalue="25" unitname="a">25A</chmetcnv></span><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: Tahoma; mso-hansi-font-family: Tahoma; mso-bidi-font-family: Tahoma;">配置最匹配,系统可靠性最高且投资低。</span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: Tahoma; mso-hansi-font-family: Tahoma; mso-bidi-font-family: Tahoma;">之后,还需向开关电源主流厂家咨询是否生产</span><chmetcnv wst="on" tcsc="0" numbertype="1" negative="False" hasspace="False" sourcevalue="25" unitname="a"><span lang="EN-US" style="FONT-FAMILY: Tahoma; mso-bidi-font-size: 10.5pt;">25A</span></chmetcnv><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: Tahoma; mso-hansi-font-family: Tahoma; mso-bidi-font-family: Tahoma;">规格的模块,假如不提供了,那么只能选择</span><span lang="EN-US" style="FONT-FAMILY: Tahoma; mso-bidi-font-size: 10.5pt;">6*<chmetcnv wst="on" tcsc="0" numbertype="1" negative="False" hasspace="False" sourcevalue="30" unitname="a">30A</chmetcnv></span><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: Tahoma; mso-hansi-font-family: Tahoma; mso-bidi-font-family: Tahoma;">这种;同时,需要落实</span><chmetcnv wst="on" tcsc="0" numbertype="1" negative="False" hasspace="False" sourcevalue="30" unitname="a"><span lang="EN-US" style="FONT-FAMILY: Tahoma; mso-bidi-font-size: 10.5pt;">30A</span></chmetcnv><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: Tahoma; mso-hansi-font-family: Tahoma; mso-bidi-font-family: Tahoma;">模块情况下的开关电源机柜最多能容纳几个模块,如果能容纳</span><span lang="EN-US" style="FONT-FAMILY: Tahoma; mso-bidi-font-size: 10.5pt;">6</span><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: Tahoma; mso-hansi-font-family: Tahoma; mso-bidi-font-family: Tahoma;">个模块,那么就可以选择这种开关电源,否则就选用</span><chmetcnv wst="on" tcsc="0" numbertype="1" negative="False" hasspace="False" sourcevalue="50" unitname="a"><span lang="EN-US" style="FONT-FAMILY: Tahoma; mso-bidi-font-size: 10.5pt;">50A</span></chmetcnv><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: Tahoma; mso-hansi-font-family: Tahoma; mso-bidi-font-family: Tahoma;">的那种。总之,要确保你的配置有相应的产品。</span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: Tahoma; mso-hansi-font-family: Tahoma; mso-bidi-font-family: Tahoma;"></span><span lang="EN-US" style="FONT-FAMILY: Tahoma; mso-bidi-font-size: 10.5pt;"><p></p></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: Tahoma; mso-hansi-font-family: Tahoma; mso-bidi-font-family: Tahoma;">假如最后选择</span><chmetcnv wst="on" tcsc="0" numbertype="1" negative="False" hasspace="False" sourcevalue="50" unitname="a"><span lang="EN-US" style="FONT-FAMILY: Tahoma; mso-bidi-font-size: 10.5pt;">50A</span></chmetcnv><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: Tahoma; mso-hansi-font-family: Tahoma; mso-bidi-font-family: Tahoma;">模块,那么高频开关电源为</span><span lang="EN-US" style="FONT-FAMILY: Tahoma; mso-bidi-font-size: 10.5pt;">-48V/<chmetcnv wst="on" tcsc="0" numbertype="1" negative="False" hasspace="False" sourcevalue="200" unitname="a">200A</chmetcnv></span><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: Tahoma; mso-hansi-font-family: Tahoma; mso-bidi-font-family: Tahoma;">。</span><span lang="EN-US" style="FONT-FAMILY: Tahoma; mso-bidi-font-size: 10.5pt;"><p></p></span></p>
时间: 2007-11-29 10:09
作者: super__m
哎呀,谢谢大家,现在心里终于有底了!对自己做的设计也更有信心了
时间: 2007-12-4 22:59
作者: 大山
10楼的说的有劲!不顶起不行啊。
时间: 2009-1-5 23:44
作者: gx8888
学习了 顶
时间: 2009-1-19 16:50
作者: bott
牛人还是有的,用自己的语言说出来.
时间: 2009-1-19 23:13
作者: wlspml
就是没有对机房电源搞懂 有时不知道一个机房电池在停电后能坚持好久
时间: 2009-1-21 15:56
作者: ronin_g_r
【8楼】:
开关电源整流模块数=(0.15*蓄电池容量+负载电流)/整流模块单体额定输出电流,该结果只能进位不能舍去;同时考虑N+1备份这样能明白不
【10楼】:
高频开关电源容量=蓄电池充电电流+负载电流=0.1*蓄电池容量+负载电流(A)
这里面电池充电电流=参数*蓄电池容量,这个参数8楼是0.15、10是0.1;这个参数是蓄电池的最大充电电流——停电、蓄电池放电过程中来电时,蓄电池充电电流很大哦O(∩_∩)O~
一般为0.1或0.15但建议采用0.15;咱维护的老百姓图一保险!
时间: 2009-5-20 11:10
作者: hzhlois
顶下
时间: 2009-5-20 16:41
作者: stHifly
1、确定机房的中期用电负荷=1500W/48V=31.25A
2、确定蓄电池的后备时间=10小时(我这以10小时为例)
3、根据公式计算出蓄电池容量=31.25*10*1.42=443.75AH
故蓄电池配2组300AH的,没钱的话就2组200AH的即可
环境温度为5摄氏度时,放电小时和对应的系数如下:
放电小时:系数
1:3.31
2:2.44
3:1.98
4:1.88
5:1.79
6:1.69
7:1.64
8:1.58
9:1.53
10:.42
[ 本帖最后由 stHifly 于 2009-5-20 16:48 编辑 ]
时间: 2009-5-20 16:45
作者: stHifly
高频开关组合电源机架按远期容量配置,整流模块按近期负荷配置,高频开关电源中整流模块数按n+1冗余方式确定,其中n为主用,n<=10时,1块为备用;n>10时,每10块备用1块。主用整流模块总容量应按负荷电源和均充电流(10小时率充电电流)之和确定。
当蓄电池为2组300AH时,充电电流A=2*300/10=60A
负荷电流=31.25A
总电流=60+31.25=91.25A
配多大的开关电源?要是机房没什么发展,就搞个100A组合开关电源即可,满配整流模块
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