Mai samar da na'ura mai jujjuya birki yana tunatar da ku cewa tare da shaharar masu sauya mitar, amfani da na'urorin birki a matsayin ɗaya daga cikin na'urori masu goyan bayan masu sauya mitar shima yana ƙaruwa.
1. Babban aikin naúrar birki
A wasu aikace-aikace, ana buƙatar rage saurin gudu. Bisa ga ka'idar asynchronous Motors, mafi girma da zamewa, mafi girma da karfin juyi. Hakazalika, jujjuyawar birki za ta ƙaru tare da ƙaruwar raguwar raguwa, da rage raguwar lokacin tsarin sosai, haɓaka amsawar kuzari, da haifar da ƙarfin wutar lantarki na motar DC na tashi da sauri. Don haka, dole ne a yi amfani da makamashin amsa da sauri don kula da wutar lantarkin bas ɗin DC a ƙasan takamaiman kewayon aminci. Babban aikin tsarin naúrar birki shine saurin watsar da makamashin (wanda ke jujjuya makamashin thermal ta hanyar birki resistor). Yana ramawa yadda ya kamata don raunin jinkirin saurin birki da ƙaramin juzu'in birki (≤ 20% ƙididdiga) na masu sauya mitar talakawa, kuma ya dace sosai ga yanayin da ake buƙatar birki cikin sauri amma mitar ta yi ƙasa.
2. Amfanin naúrar birki
Saboda aiki na ɗan gajeren lokaci na naúrar birki, wanda ke nufin cewa ƙarfin da ke kan lokaci yana da ɗan gajeren lokaci a kowane lokaci, yawan zafin jiki a lokacin wutar yana da nisa daga kwanciyar hankali; Lokacin tazara bayan kowace wutar lantarki ya fi tsayi, lokacin da zafin jiki ya isa ya faɗo zuwa matakin daidai da yanayin zafi. Sabili da haka, za a rage girman ƙarfin ƙarfin birki, kuma farashin zai ragu sosai; Bugu da ƙari, saboda gaskiyar cewa IGBT ɗaya ne kawai kuma lokacin birki yana cikin kewayon millisecond, alamun aikin nan take don kunna wutar lantarki da kashewa ba su da ƙasa, kuma ko da lokacin kashewa ana buƙatar zama ɗan gajeren lokaci don rage kashe bugun bugun jini da kare transistor wutar lantarki; Tsarin sarrafawa yana da sauƙi mai sauƙi kuma mai sauƙin aiwatarwa. Saboda fa'idodin da ke sama, ana amfani da shi sosai a cikin yuwuwar lodin makamashi kamar cranes da kuma yanayin da ake buƙatar birki cikin sauri amma don aikin ɗan gajeren lokaci.
3. Aiki tsari na birki naúrar
1. Lokacin da motar lantarki ke raguwa a ƙarƙashin ƙarfin waje, yana aiki a cikin yanayin haɓakawa, yana samar da makamashi mai sabuntawa. Ƙarfin wutar lantarki mai kashi uku na AC da aka samar da shi ana gyara shi ta hanyar gada mai cikakken iko mai kashi uku wanda ya ƙunshi ƙayyadaddun raka'o'in ra'ayoyin makamashi na inverter guda shida da diodes masu motsi a cikin sashin inverter na inverter, wanda ke ƙara ƙara ƙarfin wutar lantarki na DC a cikin inverter.
2. Lokacin da wutar lantarki ta DC ta kai ga wani irin ƙarfin lantarki (fararen wutar lantarki na sashin birki), bututun wutar lantarki na naúrar birkin yana buɗewa kuma halin yanzu yana gudana ta cikin resistor.
3. Resistor na birki yana sakin zafi, yana ɗaukar makamashi mai sabuntawa, yana rage saurin mota, kuma yana rage ƙarfin wutar lantarki na motar bas na DC na mai sauya mitar.
4. Lokacin da wutar lantarki ta DC bas ta sauko zuwa wani irin ƙarfin lantarki (braking unit tasha ƙarfin lantarki), transistor wuta na naúrar birkin yana kashe. A wannan lokacin, babu wani abin birki da ke gudana ta hanyar resistor, kuma abin birki yana watsar da zafi a dabi'ance, yana rage zafin nasa.
5. Lokacin da wutar lantarki na bas din DC ya sake tashi don kunna na'urar birki, sashin birki zai sake maimaita tsarin da ke sama don daidaita wutar lantarkin bas kuma tabbatar da aikin yau da kullun na tsarin.