Indawo yeemoto yenye yezona ndawo zinzima kakhulu zombane. YanamhlanjeIitshaja ze-EVUyilo lwande nge-elektroniki ebuthathaka, kubandakanya ulawulo lwe-elektroniki, i-infotainment, inzwa, iipakethi zebhetri, ulawulo lwebhetri,indawo yemoto yombane, kunye neetshaja ezisebhodini. Ukongeza kubushushu, i-voltage transients, kunye nokuphazamiseka kwe-electromagnetic (EMI) kwindawo yemoto, itshaja esebhodini kufuneka ijongane negridi yamandla ye-AC, ifuna ukukhuselwa kukuphazamiseka komgca we-AC ukuze usebenze ngokuthembekileyo.
Abavelisi bamacandelo banamhlanje babonelela ngezixhobo ezininzi zokukhusela iisekethe zombane. Ngenxa yoqhagamshelo kwigridi, ukukhuselwa kwetshaja ekwibhodi ukusuka ekunyukeni kwamandla ombane usebenzisa amacandelo awodwa kubalulekile.
Isisombululo esisodwa sidibanisa i-SIDACtor kunye ne-Varistor (i-SMD okanye i-THT), ukufikelela kwi-voltage ephantsi ye-clamping phantsi kwe-pulse ephezulu. I-SIDACtor + MOV indibaniselwano yenza ukuba iinjineli zeemoto ziphucule ukhetho kwaye ke, iindleko ze-semiconductors zamandla kuyilo. Ezi ndawo ziyafuneka ukuguqula amandla ombane e-AC kumbane wombane we-DC ukutshaja isithuthiukutshaja ibhetri ebhodini.
Umzobo 1. Umzobo weBhloko yeTshaja ekwibhodi
EbhodiniItshaja(OBC) isengozini ngexeshaUkutshaja kwe-EVngenxa yokuvezwa kwiziganeko ezingaphaya kwamandla ombane ezinokuthi zenzeke kwigridi yamandla. Uyilo kufuneka lukhusele ii-semiconductors zamandla ukusuka kwi-overvoltage transients kuba ii-voltages ezingaphezulu kwemida yazo zinokonakalisa. Ukwandisa ukuthembeka kwe-EV kunye nexesha lobomi, iinjineli kufuneka zijongane neemfuno ezikhulayo zokunyuka kwangoku kunye nokunciphisa umbane wokubamba umbane kuyilo lwazo.
Imizekelo yemithombo yokunyuka kwamandla ombane okwethutyana ibandakanya oku kulandelayo:
Ukutshintshwa kwemithwalo ye-capacitive
Ukutshintshwa kweenkqubo zombane ophantsi kunye neesekethe ze-resonant
Imijikelezo emifutshane evela kulwakhiwo, iingozi zendlela, okanye izaqhwithi
I-fuses evuselelweyo kunye nokukhuselwa kwe-overvoltage.
Umzobo 2. Kucetyiswa iSekethe kuMahluko kunye neMowudi eqhelekileyo yokuKhusela iVoltage yeSekethe yeThutyana usebenzisa ii-MOV kunye ne-GDT.
I-MOV eyi-20mm ikhethwa ngokuthembeka nokukhusela okungcono. I-20mm MOV ilawula iipulses ezingama-45 ze-6kV/3kA surge current, eyomeleleyo ngakumbi kune-14mm MOV. Idiski ye-14mm inokuphatha kuphela malunga ne-14 yokuhlinzwa ebomini bayo.
Umzobo 3. UkuQhwatha koMsebenzi we-lnfuse encinci ye-V14P385AUTO MOV Ngaphantsi kwe-2kV kunye ne-4kV Surges. IVoltage yeClamping iNgaphaya kwi-1000V.
Umzekelo wokumisela ukhetho
Itshaja yeNqanaba loku-1-120VAC, isiphaluka sesigaba esinye: Ubushushu obulindelekileyo be-ambient yi-100°C.
Ukufunda ngakumbi malunga nokusebenzisa i-SIDACt okanye uKhuseleko lwe-Thyristors kwiizithuthi zombane, Khuphela inqaku lesicelo lesicelo se-EV On-Board Chargers ye-Optimum Transient Surge Protection, ngoncedo lwe-Little fuse, Inc.
Ixesha lokuposa: Jan-18-2024