傳(chuan)感器外圍電(dian)路的設(she)計和參數配(pei)置(zhi)
傳感器輸(shu)出信(xin)號的調(tiao)整(zheng)電(dian)路傳(chuan)感(gan)器的輸(shu)出需(xu)先經過(guo)調整(zheng)電(dian)路調(tiao)整(zheng)成需要的模(mo)擬(ni)量，再(zai)供給單(dan)片(pian)微(wei)機系統進行A/D轉(zhuan)換(huan)，得到(dao)相(xiang)應(ying)的電(dian)流(liu)和電(dian)壓值(zhi)。充(chong)電(dian)器中使(shi)用的信(xin)號調整(zheng)電(dian)路如圖(tu)2所(suo)示。 
       調整(zheng)電(dian)路的*，由(you)運(yun)放構成的波(bo)整(zheng)流(liu)電路將輸(shu)入(ru)端(duan)的交(jiao)流(liu)量整(zheng)流(liu)為直(zhi)流(liu)量。由(you)於經過(guo)波(bo)整(zheng)流(liu)後的直(zhi)流(liu)量為負(fu)，所以(yi)波(bo)整(zheng)流(liu)電路後(hou)面(mian)，加(jia)上了第二(er)反相(xiang)變(bian)換(huan)電(dian)路。這(zhe)樣(yang)，方(fang)面(mian)可(ke)以(yi)將直(zhi)流(liu)輸(shu)出量(liang)的反(fan)相(xiang)為正(zheng)，A/D轉(zhuan)換(huan)的要(yao)求(qiu)；另方(fang)面(mian)可(ke)以(yi)通(tong)過(guo)反饋支(zhi)路上的電(dian)位(wei)器對調(tiao)整(zheng)電(dian)路的zui終(zhong)輸(shu)出值(zhi)進(jin)行調節，A/D轉(zhuan)換(huan)的幅值(zhi)要(yao)求。zui後，反(fan)相(xiang)器的輸(shu)出接入(ru)由二(er)管構成的電(dian)壓鉗(qian)位(wei)限(xian)幅電路，對(dui)調(tiao)整(zheng)後(hou)的電(dian)壓進行(xing)限(xian)幅，單(dan)片(pian)微(wei)機的A/D輸(shu)入(ru)通(tong)道對(dui)電(dian)壓的要(yao)求(qiu)。


傳感(gan)器外圍電(dian)路實(shi)驗(yan)結果與波(bo)形圖(tu) 
頻變(bian)壓器輸(shu)出波(bo)形
充(chong)電(dian)器系統經過(guo)了滿(man)功(gong)率(lv)考(kao)核(he)試驗(yan)和實(shi)際裝(zhuang)車運(yun)用考核(he)試驗(yan)。在直(zhi)流(liu)110V充(chong)電(dian)電壓下(xia)，充(chong)電(dian)電流(liu)達到(dao)50A，恒流(liu)充(chong)電(dian)模式運(yun)行，系統運(yun)行正(zheng)常(chang)。系統能夠(gou)實(shi)現(xian)很(hen)好(hao)的故(gu)障保(bao)護(hu)功(gong)能(neng)。圖(tu)3給(gei)出了(le)實驗(yan)時IPM模(mo)塊中個(ge)橋臂(bi)上下(xia)兩個IGBT的驅動(dong)信(xin)號。從波(bo)形中可(ke)以(yi)看(kan)出，該時刻(ke)IGBT的開(kai)關(guan)頻率(lv)為9.52kHz，上下(xia)橋臂(bi)互補通(tong)斷。但(dan)要(yao)註意的是(shi)，圖(tu)示信(xin)號經反(fan)相(xiang)後(hou)才用來驅動(dong)IGBT管(guan)。通(tong)過(guo)該波(bo)形可(ke)以(yi)分(fen)析出兩個驅動(dong)脈(mai)沖(chong)之間(jian)已加(jia)上了死區時(shi)間(jian)，防止同(tong)橋臂(bi)的上下(xia)兩個管子(zi)直(zhi)通(tong)故(gu)障。圖(tu)4給(gei)出了(le)DC/DC變(bian)換(huan)器中頻變(bian)壓器次邊(bian)的波(bo)形。通(tong)過(guo)波(bo)形可(ke)以(yi)看(kan)出，逆(ni)變(bian)橋開(kai)關(guan)管(guan)在關(guan)斷(duan)過(guo)程(cheng)中會(hui)引(yin)入(ru)些電(dian)壓。 

頻變(bian)壓器輸(shu)出波(bo)形結論
實驗(yan)結果和裝(zhuang)車考核(he)試驗(yan)表明(ming)，內(nei)燃機車蓄電(dian)池智能(neng)充(chong)電(dian)器的設(she)計可(ke)以(yi)機車的實(shi)際運(yun)用要求(qiu)，實現(xian)了(le)恒壓充(chong)電(dian)過(guo)程(cheng)中的自(zi)動(dong)限(xian)流(liu)充(chong)電(dian)，提了充(chong)電(dian)的效(xiao)率(lv)和(he)質(zhi)量(liang)，大大減(jian)輕(qing)了充(chong)電(dian)過(guo)程(cheng)對車載蓄(xu)電池組的損(sun)壞程(cheng)度(du)。系統中，LEM傳(chuan)感(gan)器測量(liang)信(xin)號實時(shi)、，故(gu)障保(bao)護(hu)，穩(wen)壓、限(xian)流(liu)等(deng)功(gong)能(neng)和測量的要(yao)求(qiu)。傳感(gan)器的外(wai)圍接口電路、供電電(dian)源、布(bu)線(xian)、電磁(ci)兼容設(she)計等(deng)均要(yao)求，設計合理(li)。目前充(chong)電(dian)器已經(jing)通(tong)過(guo)了現(xian)場裝(zhuang)車運(yun)用考核(he)，可(ke)望實(shi)現(xian)批(pi)量裝(zhuang)車，擴大市場。
西(xi)安浩南電子(zi)科技有限(xian)公(gong)司(si) LT108-S7