在今天的文章中

，我們將會為大家分享三種常見的變壓器噪聲抑製方案，以便於工程師們進行參考。

 

zaiyingyongguochengzhong，qishidianyuanbianyaqibenshenbingbushichanshengzaoshengdegenyuan，ershidianwangzhongdegaopinjianfengmaichongzaoshengdianwangzhongzuichangjiandegaopinjianfengmaichongzaosheng，jiushitongguodianyuanbianyaqichuangeixiayijidianzixianlude。qizhuyaotujingbingbushichu
、次級問的交流電磁耦合，而是通過變壓器初、次級問的分布電容。這種高頻尖峰脈衝噪聲的運行過程如下圖圖1所(suo)示(shi)。一(yi)般(ban)變(bian)壓(ya)器(qi)在(zai)高(gao)頻(pin)情(qing)況(kuang)下(xia)兩(liang)者(zhe)之(zhi)間(jian)的(de)分(fen)布(bu)電(dian)容(rong)約(yue)有(you)數(shu)百(bai)皮(pi)法(fa)，對(dui)高(gao)頻(pin)噪(zao)聲(sheng)呈(cheng)現(xian)很(hen)低(di)的(de)阻(zu)抗(kang)，以(yi)致(zhi)電(dian)網(wang)的(de)噪(zao)聲(sheng)幹(gan)擾(rao)比(bi)較(jiao)容(rong)易(yi)地(di)通(tong)過(guo)變(bian)壓(ya)器(qi)對(dui)電(dian)子(zi)線(xian)路(lu)形(xing)成(cheng)幹(gan)擾(rao)。

圖1電源變壓器高頻尖峰脈衝噪聲運行過程

 

就國內的設計應用情況來看，目前常見的變壓器噪聲抑製的措施有三個方麵
，分別是在初級次級間加靜電屏蔽、設置隔離變壓器和采用初次級分段繞製。下麵我們將會就這三個方麵一一展開敘述。

 

 

zaidianyuanbianyaqidechucijijianjiajingdianpingbi，nenggoufeichangyouxiaodeshixianduigaopinjianfengmaichongzaoshengjinxingyizhi。zhezhongfangfadeshixianfangshiyefeichangjiandan，zairaozhiwanbianyaqidechucijiraozuhou，gongchengshikeyizaichujiraozushangzaijiayongyicengbotongpi，zhuyizheyicengbotongpideshiduanyumoduanyaoyouzhongdiebufen，bingbaozhengzhongdiebufenyaoxianghujueyuan。lingwaihaiyouyigewentixuyaogongchengshizhuyi，bianyaqipingbicengdeyinxianzukangzdedaxiaoduipingbixiaoguoyeyouhendadeyingxiang，suoyiyinchuxianyaojinkenengdiduanercu。weilejianxiaoyinchuxianyupingbicengwendejiechudianzu，baozhengdianzishebeichangqiwendingdikekaodigongzuo，zaizheliwomenzuihaozhijieliyongpingbicengdetongpizuoyinxian。weilejianxiaojiapingbicenghoucancundefenbudianrongzhi
，kecaiquzairaozhishijiangraozudekuanduraozhaiyixie，erjiangpingbicengjiakuandebanfayijianshaodianlixiandexielou。

 

 

chulezaichucijijianjiajingdianpingbidefangfazhiwai，shezhigelibianyaqidebanfayeyiyangkeyijinxingdianyuanbianyaqidezaoshengyizhi。weifangzhidianwangzhongdezaoshengjinrudianyuanbufen
，zaishijiyingyongzhonggongchengshimenkeyicaiyongchucijizashubiwei1:1的de隔ge離li變bian壓ya器qi。初chu次ci級ji繞rao組zu分fen開kai繞rao製zhi，各ge自zi獨du立li加jia屏ping蔽bi
，以yi減jian少shao初chu次ci級ji問wen的de分fen布bu電dian容rong。需xu要yao注zhu意yi的de問wen題ti是shi，在zai對dui屏ping蔽bi層ceng和he鐵tie心xin采cai用yong不bu同tong的de接jie法fa時shi，其qi分fen布bu電dian容rong和he直zhi流liu電dian阻zu也ye不bu同tong。

 

（a）一般電源變壓器初次級分段繞製後的效果（b）電源變壓器初次級線圈分兩部分繞製後的效果

 

采cai用yong初chu次ci級ji分fen段duan繞rao製zhi，也ye可ke以yi實shi現xian電dian源yuan變bian壓ya器qi噪zao聲sheng抑yi製zhi。就jiu目mu前qian國guo內nei的de產chan品pin應ying用yong情qing況kuang來lai看kan
，使shi用yong初chu次ci級ji分fen段duan繞rao製zhi技ji術shu，對dui抗kang共gong模mo噪zao聲sheng有you非fei常chang明ming顯xian的de抑yi製zhi效xiao果guo。上shang圖tu中zhong

，2（a）suoshiweiyibanbianyaqi，ruocaiyongrutusuoshidefenduanraozhijishufenzuoliangbufenlairao


，cishidegongmoganraojiangdadajiangdi。chucizhiwai
，gairaofahaiyoulingwaideyoudian。jiashetu2（a）和圖2（b）變壓器的初次級繞組隻有兩層
，則圖2（a）的繞組的a
、b間有450V電位差，而如圖2（b）將初次級線圈分兩部分繞製，a、b之間的電位差就隻有225V了。很顯然，前者產生的分部電容將有很大的泄漏電流，而後者隻有一半的電位差
，其泄漏電流就會大大減少。