Indawo yezimoto ingenye yezindawo ezinzima kakhulu ze-electronics. OkwanamuhlaAmashaja e-EVimiklamo yanda ngezinto zikagesi ezibucayi, okuhlanganisa izilawuli zikagesi, i-infotainment, izinzwa, amaphakethe ebhethri, ukuphathwa kwebhethri,indawo yemoto kagesi, kanye namashaja angaphakathi. Ngokungeziwe ekushiseni, ama-voltage transients, nokuphazamiseka kazibuthe kagesi (EMI) endaweni yezimoto, ishaja esebhodini kufanele ihlangane negridi yamandla e-AC, edinga ukuvikelwa ekuphazanyisweni kolayini we-AC ukuze isebenze okuthembekile.
Abakhiqizi bezingxenye zanamuhla banikela ngamadivaysi amaningi okuvikela amasekethe kagesi. Ngenxa yokuxhumeka kugridi, ukuvikelwa kweshaja ebhodini ekukhuphukeni kwamandla kagesi kusetshenziswa izingxenye ezihlukile kubalulekile.
Isixazululo esiyingqayizivele sihlanganisa i-SIDACtor kanye ne-Varistor (SMD noma i-THT), ifinyelela ku-voltage ephansi yokubopha ngaphansi kwe-high surge pulse. Inhlanganisela ye-SIDACtor+MOV inika amandla onjiniyela bezimoto ukuthi balungiselele ukukhetha ngakho-ke, izindleko zama-semiconductors amandla ekwakhiweni. Lezi zingxenye ziyadingeka ukuze kuguqulwe i-voltage ye-AC ibe amandla kagesi e-DC ukuze ishaje imotoukushaja ibhethri ebhodini.
Umfanekiso 1. Umdwebo Webhulokhi Yeshaja Esebhodini
I-ObhodiniIshaja(OBC) isengozini ngesikhathiUkushaja kwe-EVngenxa yokuchayeka ezenzakalweni ze-overvoltage ezingase zenzeke kugridi yamandla. Idizayini kufanele ivikele ama-semiconductors amandla kuma-overvoltage transients ngoba ama-voltage angaphezu kwemikhawulo yawo ephezulu angawalimaza. Ukuze banwebe ukwethembeka nempilo yonke ye-EV, onjiniyela kufanele babhekane nezidingo ezikhulayo zamanje zokukhuphuka kanye nokunciphisa umkhawulo kagesi wokubopha emiklameni yabo.
Izibonelo zemithombo yokwenyuka kwamandla kagesi wesikhashana ihlanganisa okulandelayo:
Ukushintsha imithwalo ye-capacitive
Ukushintsha amasistimu kagesi aphansi namasekhethi azwakalayo
Amasekhethi amafushane abangelwa ukwakhiwa, izingozi zomgwaqo, noma iziphepho
Amafuse acushiwe nokuvikelwa kwe-overvoltage.
Umfanekiso 2. Isekhethi Enconyiwe Yemodi Ehlukile Futhi Evamile Ukuvikelwa Kwesekethe Yamandla Esikhashana Esebenzisa Ama-MOV kanye Ne-GDT.
I-MOV engu-20mm ikhethwa ngokwethembeka nokuvikelwa okungcono. I-20mm MOV iphatha ama-pulses angu-45 we-6kV/3kA surge current, enamandla kakhulu kune-14mm MOV. Idiski engu-14mm ingakwazi ukusingatha cishe ukuhlinzwa okungu-14 phakathi nokuphila kwayo.
Umfanekiso 3. Ukusebenza Okubambekayo Kwe-lnfuse Encane V14P385AUTO MOV Ngaphansi kuka-2kV kanye No-4kV Surges. I-Clamping Voltage Idlula ku-1000V.
Ukunqunywa kokukhetha isibonelo
Ishaja yeleveli 1—120VAC, isekethe yesigaba esisodwa: Izinga lokushisa elilindelekile le-ambient ngu-100°C.
Ukuze ufunde kabanzi mayelana nokusebenzisa i-SIDACt noma i-Protection Thyristors kuizimoto zikagesi, landa inothi lesicelo elithi Indlela Yokukhetha I-Optimum Transient Surge Protection ye-EV On-Board Chargers, ngezilokotho ze-Little fuse, Inc.
Isikhathi sokuthumela: Jan-18-2024