逆变器的作用-逆变器的线路架构及逆变器的电气参数具体对LCD的影响

逆变器的线路架构

1、ROYER架构(gou):线路较简单但效率偏低(di),一般(ban)只有(you)70%多(duo),目前较少采(cai)用。

2、推挽架构:对(dui)开(kai)关MOS耐压有更高要求,效率(lv)85%左(zuo)右,一般用于两灯和四灯逆(ni)变(bian)器。

3、全桥架构:成本相(xiang)对较高,效率90%左右,多用于六(liu)灯或多灯逆变(bian)器。

逆变器的电气参数具体对LCD的影响

1、输出(chu)电(dian)流:输出(chu)电(dian)流的大小决定屏(ping)(ping)的亮(liang)度,电(dian)流越大则屏(ping)(ping)越亮(liang),电(dian)流越小则屏(ping)(ping)越暗。根据(ju)屏(ping)(ping)的要求,一般(ban)最大输出(chu)电(dian)流设置(zhi)在7mA左右,而(er)最小值在3.5mA左右。输出(chu)电(dian)流过(guo)大会对灯管(guan)寿(shou)命造成不良影响。

2、开(kai)放高(gao)(gao)压(ya):即逆变器开(kai)启瞬间点亮灯管的(de)电压(ya),其大小(xiao)是根据屏(ping)的(de)要(yao)求(qiu)来设定的(de),最大值一般在(zai)1800V左右。开(kai)放高(gao)(gao)压(ya)不能过高(gao)(gao),否则也会影响(xiang)屏(ping)的(de)寿命。

3、输出(chu)波形(xing)(xing):包括电流波形(xing)(xing)与电压波形(xing)(xing)。波形(xing)(xing)越(yue)(yue)正弦则表(biao)示逆变器输出(chu)效率越(yue)(yue)高(gao),对灯管的(de)损(sun)害也会越(yue)(yue)小(xiao)。如果波形(xing)(xing)有抖(dou)动则(ze)会(hui)导致闪屏现(xian)象,如果波(bo)形有尖峰或者弯(wan)曲(qu)则(ze)表明逆变器的输出效率(lv)不(bu)是很理(li)想,开关MOS与变压(ya)器等功率(lv)器件会(hui)比较(jiao)发热。

4、工作频(pin)率:根据屏(ping)的要(yao)求(qiu)来设定,一般(ban)在40KHZ~60KHZ之(zhi)间如果工作频(pin)率不正(zheng)(zheng)常或偏差很大,对输出电(dian)流和开(kai)放高压等电(dian)气参数几乎(hu)都会有影响。所以(yi)对逆变器首先要(yao)判断(duan)上述(shu)参数是否(fou)正(zheng)(zheng)常。

逆变器的作用

逆(ni)(ni)变(bian)(bian)器是把直流电(dian)(dian)能（电(dian)(dian)池、蓄(xu)电(dian)(dian)瓶(ping)）转变(bian)(bian)成交流电(dian)(dian)（一(yi)般为220V 50赫兹正弦或方波）。通俗的讲，逆(ni)(ni)变(bian)(bian)器是一(yi)种(zhong)将直流电(dian)(dian)（DC）转化为交流电(dian)(dian)（AC）的装置。它由逆(ni)(ni)变(bian)(bian)桥、控制逻(luo)辑和滤波电(dian)(dian)路组成。

广泛(fan)适用于空(kong)调、家(jia)庭影院、电(dian)动(dong)砂(sha)轮、电(dian)动(dong)工具(ju)、缝纫机、DVD、VCD、电(dian)脑、电(dian)视、洗衣(yi)机、抽油烟机、冰箱，录(lu)像机、按摩器、风扇、照明等。

简(jian)单地(di)说，逆(ni)变(bian)器就(jiu)是一种将低(di)压(ya)（12或(huo)(huo)(huo)24伏(fu)或(huo)(huo)(huo)48伏(fu)）直流电(dian)(dian)转变(bian)为220伏(fu)交(jiao)(jiao)流电(dian)(dian)的电(dian)(dian)子设备(bei)。因为我(wo)们(men)(men)通(tong)常是将220伏(fu)交(jiao)(jiao)流电(dian)(dian)整流变(bian)成直流电(dian)(dian)来使(shi)用，而逆(ni)变(bian)器的作用与此相(xiang)反(fan)，因此而得名(ming)。我(wo)们(men)(men)处在一个“移动(dong)(dong)”的时(shi)(shi)代(dai)，移动(dong)(dong)办(ban)公，移动(dong)(dong)通(tong)讯，移动(dong)(dong)休闲和(he)娱(yu)乐。在移动(dong)(dong)的状态中，人们(men)(men)不(bu)但需要(yao)由电(dian)(dian)池(chi)或(huo)(huo)(huo)电(dian)(dian)瓶供给的低(di)压(ya)直流电(dian)(dian)，同时(shi)(shi)更需要(yao)我(wo)们(men)(men)在日(ri)常环境(jing)中不(bu)可(ke)或(huo)(huo)(huo)缺的220伏(fu)交(jiao)(jiao)流电(dian)(dian)，逆(ni)变(bian)器就(jiu)可(ke)以满足(zu)我(wo)们(men)(men)的这种需求(qiu)。

太阳能逆变器的作用

太阳(yang)能(neng)逆(ni)(ni)变器在应用中分为独立(li)太阳(yang)能(neng)发电(dian)(dian)(dian)逆(ni)(ni)变器和并(bing)网太阳(yang)能(neng)发电(dian)(dian)(dian)逆(ni)(ni)变器，而独立(li)太阳(yang)能(neng)发电(dian)(dian)(dian)逆(ni)(ni)变器主(zhu)要用于(yu)偏远没有家庭用电(dian)(dian)(dian)的(de)地区以及(ji)单独的(de)家庭用户，并(bing)网太阳(yang)能(neng)发电(dian)(dian)(dian)逆(ni)(ni)变器主(zhu)要用于(yu)沙漠电(dian)(dian)(dian)站和城市屋顶(ding)发电(dian)(dian)(dian)系统。

其(qi)实太阳(yang)(yang)(yang)能(neng)(neng)逆变(bian)(bian)器(qi)的(de)(de)(de)(de)总体作用(yong)就(jiu)是(shi)(shi)通过(guo)全桥电(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)，然后再采用(yong)SPWM的(de)(de)(de)(de)处(chu)理器(qi)经(jing)过(guo)调制(zhi)、滤波(bo)以及升(sheng)压等一些(xie)中间的(de)(de)(de)(de)各种系统得到相应(ying)的(de)(de)(de)(de)正弦交(jiao)流电(dian)(dian)(dian)(dian)(dian)(dian)(dian)，最后来供应(ying)需(xu)要使(shi)用(yong)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)的(de)(de)(de)(de)终端客户(hu)使(shi)用(yong)，其(qi)实太阳(yang)(yang)(yang)能(neng)(neng)就(jiu)是(shi)(shi)提供能(neng)(neng)源(yuan)的(de)(de)(de)(de)系统，而逆变(bian)(bian)器(qi)就(jiu)是(shi)(shi)改变(bian)(bian)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)流的(de)(de)(de)(de)一个装置，太阳(yang)(yang)(yang)能(neng)(neng)中的(de)(de)(de)(de)能(neng)(neng)量通过(guo)逆变(bian)(bian)器(qi)得到可(ke)以使(shi)用(yong)的(de)(de)(de)(de)直流蓄电(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)储存在(zai)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)的(de)(de)(de)(de)以便使(shi)用(yong)，这就(jiu)是(shi)(shi)太阳(yang)(yang)(yang)能(neng)(neng)逆变(bian)(bian)器(qi)的(de)(de)(de)(de)作用(yong)，也(ye)因此(ci)使(shi)得太阳(yang)(yang)(yang)能(neng)(neng)逆变(bian)(bian)器(qi)成为光伏(fu)风力发(fa)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)系统的(de)(de)(de)(de)核心部件，不过(guo)重要的(de)(de)(de)(de)是(shi)(shi)新能(neng)(neng)源(yuan)的(de)(de)(de)(de)发(fa)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)成本低，太阳(yang)(yang)(yang)能(neng)(neng)逆变(bian)(bian)器(qi)就(jiu)要高速的(de)(de)(de)(de)运行。

汽车逆变器的作用

逆变器(qi)的(de)主(zhu)(zhu)要(yao)作用(yong)(yong)便是(shi)电(dian)(dian)(dian)源(yuan)转换(huan)，在使用(yong)(yong)逆变器(qi)之后(hou)，车主(zhu)(zhu)可以(yi)(yi)(yi)在汽车上加(jia)装许多用(yong)(yong)电(dian)(dian)(dian)设(she)备，就相(xiang)当(dang)于家用(yong)(yong)的(de)插排一样，车主(zhu)(zhu)可以(yi)(yi)(yi)在车内进行手机充电(dian)(dian)(dian)，使用(yong)(yong)笔(bi)记本和游戏机以(yi)(yi)(yi)及电(dian)(dian)(dian)动(dong)工具等，相(xiang)比点烟器(qi)的(de)小电(dian)(dian)(dian)源(yuan)来说，使用(yong)(yong)更加(jia)方便，而且(qie)还不用(yong)(yong)担心电(dian)(dian)(dian)压过大从而导致点烟器(qi)电(dian)(dian)(dian)源(yuan)失效。

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