Umngeni wenkqubo ye-800V: inqwaba yokutshaja kwenkqubo yokutshaja

Inqwaba yokutshaja ye-800V "Iziseko zokutshaja"

Eli nqaku lithetha kakhulu ngeemfuno ezithile zokuqala ze-800Viinqwaba zokutshaja, okokuqala makhe sijonge umgaqo wokutshaja: Xa incam yokutshaja iqhagamshelwe kwisiphelo sesithuthi, inqwaba yokutshaja iya kubonelela (1) amandla ancedisayo e-DC aphantsi-voltage kwisiphelo sesithuthi ukuze kusebenze i-BMS eyakhelwe ngaphakathi (inkqubo yolawulo lwebhetri) yesithuthi sombane. Emva kokusebenza, (2) qhagamshela isiphelo semoto kwisiphelo senqwaba, utshintshiselane ngeeparameter ezisisiseko zokutshaja ezifana namandla aphezulu okutshaja kwisiphelo sesithuthi kunye namandla aphezulu okuphuma kwisiphelo senqwaba, emva kokuba amacala omabini efaniswe ngokuchanekileyo, i-BMS (inkqubo yolawulo lwebhetri) yesiphelo sesithuthi iya kuthumela ulwazi lwemfuno yamandla kwiisikhululo sokutshaja se-ev, kwaye iinqwaba yokutshaja imoto yombaneiza kulungisa i-output voltage yayo kunye nomsinga ngokwale ngcaciso, ize iqalise ngokusesikweni ukutshaja imoto, nto leyo engumgaqo osisisekouqhagamshelo lokutshaja, kwaye kufuneka siqhelane nayo kuqala.

Ukutshaja kwe-800V: "nyusa i-voltage okanye i-current"

Ngokwethiyori, ukuba sifuna ukunika amandla okutshaja ukuze sinciphise ixesha lokutshaja, kukho iindlela ezimbini: nokuba uyayonyusa ibhetri okanye unyuse i-voltage; Ngokutsho kwe-W=Pt, ukuba amandla okutshaja aphindwe kabini, ixesha lokutshaja liya kuncitshiswa ngokwendalo; Ngokutsho kwe-P=UI, ukuba i-voltage okanye i-current iphindwe kabini, amandla okutshaja anokuphindwa kabini, nto leyo ekhankanyiweyo ngokuphindaphindiweyo kwaye ithathwa njengengqiqo eqhelekileyo.

Ukuba umbane mkhulu, kuya kubakho iingxaki ezimbini, okukhona umbane mkhulu, kokukhona intambo efuna umbane inkulu kwaye ikhulu, nto leyo eya kwandisa ububanzi bentambo kunye nobunzima, yonyuse iindleko, kwaye ayilungelanga abasebenzi ukuyisebenzisa; Ukongeza, ngokutsho kwe-Q=I²Rt, ukuba umbane uphezulu, ukulahleka kwamandla kukhulu, kwaye ukulahleka kubonakala ngendlela yobushushu, nto leyo ekwanyusa uxinzelelo lolawulo lobushushu, ngoko ke akukho mathandabuzo ukuba akucetyiswa ukunyusa amandla okutshaja ngokunyusa umbane rhoqo, nokuba kukutshaja okanye inkqubo yokuqhuba emotweni.

Xa kuthelekiswa nokutshaja okukhawulezayo okunamandla aphezulu,ukutshaja ngokukhawuleza okunamandla aphezuluivelisa ubushushu obuncinci kunye nelahleko ephantsi, kwaye phantse iinkampani zeemoto eziqhelekileyo ziye zamkela indlela yokunyusa i-voltage, kwimeko yokutshaja ngokukhawuleza kwe-voltage ephezulu, ngokwethiyori ixesha lokutshaja linokunciphisa nge-50%, kwaye ukunyuka kwe-voltage kunokunyusa ngokulula amandla okutshaja ukusuka kwi-120KW ukuya kwi-480KW.

Ukutshaja kwe-800V: “Iziphumo zobushushu ezihambelana ne-voltage kunye nomsinga wangoku”

Kodwa nokuba kukonyusa i-voltage okanye kukonyusa i-current, okokuqala, ngokonyuka kwamandla akho okutshaja, ubushushu bakho buya kuvela, kodwa ukubonakaliswa kobushushu kokunyusa i-voltage kunye nokonyusa i-current kwahlukile. Nangona kunjalo, eyokuqala ingcono xa ithelekiswa.

Ngenxa yokuxhathisa okuphantsi okuhlangatyezwa ngumbane xa udlula kwi-conductor, indlela yokunyusa i-voltage iyanciphisa ubungakanani bentambo obufunekayo, kwaye ubushushu obuza kuchithwa buncinci, kwaye ngelixa umbane unyuswa, ukwanda kwendawo ethwala umbane ekhokelela kububanzi obukhulu bangaphandle kunye nobunzima bentambo obukhulu, kwaye ubushushu buya kwanda kancinci ngokwandiswa kwexesha lokutshaja, elifihlakele ngakumbi, nto leyo eyingozi enkulu kwibhetri.

Ukutshaja kwe-800V: “Ezinye iingxaki ezikhawulezileyo malunga neenqwaba zokutshaja”

Ukutshaja ngokukhawuleza kwe-800V kukwaneemfuno ezahlukeneyo ekupheleni kwenqwaba:

Ukuba ngokwembono yomzimba, ngokonyuka kwe-voltage, ubungakanani boyilo lwezixhobo ezinxulumene noko bunyanzelekile ukuba bunyuke, umzekelo, ngokwenqanaba longcoliseko lwe-IEC60664 yi-2 kwaye umgama weqela lezinto zokwambathisa u-1, umgama wesixhobo esine-voltage ephezulu kufuneka ube ukusuka kwi-2mm ukuya kwi-4mm, kwaye iimfuno ezifanayo zokumelana nokwambathisa nazo ziya kwanda, phantse umgama oqhekekileyo kunye neemfuno zokwambathisa u-insulation kufuneka ziphindwe kabini, ekufuneka ziphindeke kuyilo xa kuthelekiswa noyilo lwenkqubo ye-voltage yangaphambili, kubandakanya izihlanganisi, iibha zekopolo, izihlanganisi, njl. Ukongeza, ukonyuka kwe-voltage kuya kukhokelela kwiimfuno eziphezulu zokucima i-arc, kwaye kuyimfuneko ukonyusa iimfuno zezinye izixhobo ezifana neefusi, iibhokisi zokutshintsha, izihlanganisi, njl.njl., ezikwasebenza kuyilo lwemoto, oluza kukhankanywa kumanqaku alandelayo.

Inkqubo yokutshaja ye-800V ene-voltage ephezulu kufuneka yongeze inkqubo yokupholisa ulwelo olusebenzayo lwangaphandle njengoko kukhankanyiwe apha ngasentla, kwaye ukupholisa komoya kwendabuko akunakuhlangabezana neemfuno nokuba kukupholisa okusebenzayo okanye okungasebenziyo, kunye nolawulo lobushushu beisikhululo sokutshaja iimoto zombaneUmgca wesibhamu ukuya esiphelweni sesithuthi uphezulu kunangaphambili, kwaye indlela yokunciphisa nokulawula ubushushu bale nxalenye yenkqubo ukusuka kwinqanaba lesixhobo kunye nenqanaba lenkqubo yeyona nto ibalulekileyo ekufuneka iphuculwe kwaye isonjululwe yinkampani nganye kwixesha elizayo; Ukongeza, le nxalenye yobushushu ayisiyo kuphela ubushushu obuziswa kukutshaja kakhulu, kodwa ikwabubushushu obuziswa zizixhobo zamandla ezisebenzisa amandla aphezulu, ngoko ke indlela yokwenza ukubekwa esweni ngexesha langempela kunye nozinzo, olusebenzayo nolukhuselekileyo lokususa ubushushu ibaluleke kakhulu, okungekuko nje kuphela impumelelo kwizixhobo, kodwa kunye nokuchonga okucwangcisiweyo, njengokubeka esweni ngexesha langempela kunye nokusebenza kobushushu bokutshaja.

Okwangoku, i-output voltage yeIinqwaba zokutshaja zeDCKwimarike ngokusisiseko yi-400V, engenakutshaja ngqo ibhetri yamandla ye-800V, ngoko ke kufuneka imveliso eyongezelelweyo ye-boost DCDC ukuphakamisa i-voltage ye-400V ukuya kwi-800V, uze utshaje ibhetri, efuna amandla aphezulu kunye nokutshintsha kwe-frequency ephezulu, kwaye imodyuli esebenzisa i-silicon carbide ukuthatha indawo ye-IGBT yendabuko yeyona ndlela iphambili yangoku, nangona iimodyuli zeSilicon carbide zinokunyusa amandla okukhupha ii-piles zokutshaja kwaye zinciphise ilahleko, kodwa ixabiso liphezulu kakhulu, kwaye iimfuno ze-EMC nazo ziphezulu.

Ukushwankathela. Ngokusisiseko, ukunyuka kwe-voltage kuya kufuneka kunyuswe kwinqanaba lenkqubo nakwinqanaba lesixhobo, kubandakanya inkqubo yolawulo lobushushu, inkqubo yokukhusela ukutshaja, njl.njl., kwaye inqanaba lesixhobo liquka ukuphuculwa kwezinye izixhobo zemagnethi kunye nezixhobo zamandla.