Imodyuli yokuTshaja eyi-40kW SiC ephezulu ye-DC EV

Imodyuli ephezulu yokutshaja ye-SiC inokubakho kakhulu njengoko imfuno yokutshaja ombane aphezulu isanda Ukulandela i-premiere yehlabathi ye-Porsche ye-800V imodeli yeqonga le-voltage ephezulu ye-Taycan ngoSeptemba ka-2019, iinkampani ezinkulu ze-EV zikhuphe iimodeli zokutshaja ezikhawulezayo ze-800V, ezifana ne-Hyundai IONIQ, i-Lotus Eletre, i-BYD Dolphin, i-Audi RS e-tron GT, njl. Zonke zihanjiswa okanye zinemveliso eninzi kule minyaka mibini. Ukutshaja ngokukhawuleza kwe-800V kuya kuba yeyona nto iphambili kwimarike; I-CITIC Securities iqikelela ukuba ngo-2025, inani leemodeli zokutshaja ngokukhawuleza kwe-voltage ngokukhawuleza liya kufikelela kwi-5.18 yezigidi, kwaye izinga lokungena liza kwanda ukusuka ngoku kancinci kwi-10% ukuya kwi-34%. Oku kuya kuba yeyona nto iqhubayo ekukhuleni kwemarike yokutshaja ngokukhawuleza kwevoltage, kwaye iinkampani ezinyukayo kulindeleke ukuba zixhamle kuyo. Ngokolwazi loluntu, imodyuli yokuhlawula iyona nxalenye ephambili yemfumba yokutshaja, ibalwa malunga ne-50% yeendleko ezipheleleyo zokuhlawula; phakathi kwabo, isixhobo samandla e-semiconductor senza i-30% yeendleko zemodyuli yokutshaja, oko kukuthi, i-akhawunti yemodyuli yamandla e-semiconductor malunga ne-15% yeendleko zemfumba yokutshaja, iya kuba ngumxhamli oyintloko kwinkqubo yophuhliso lwemarike yemfumba yokutshaja. . Okwangoku, izixhobo zombane ezisetyenziselwa ukutshaja iimfumba ubukhulu becala zii-IGBT kunye nee-MOSFET, zombini ezi zimveliso ezisekwe kwi-Si, kunye nophuhliso lweemfumba zokutshaja kwi-DC ngokukhawuleza zibeke iimfuno eziphezulu zezixhobo zamandla. Ukuze wenze ukutshaja kweemoto ngokukhawuleza njengokugcwalisa kwisikhululo segesi, ii-automakers zifuna ngenkuthalo izinto ezinokuphucula ukusebenza kakuhle, kwaye i-silicon carbide ngoku iyinkokeli. I-silicon carbide ineenzuzo zokumelana nokushisa okuphezulu, ukuxhathisa uxinzelelo oluphezulu, amandla aphezulu, njl., Enokuphucula ukuguqulwa kwamandla kunye nokunciphisa umthamo wemveliso. Uninzi lwezithuthi zombane zisebenzisa izikimu zokutshaja ze-AC, ekufuneka kuthathe iiyure ezininzi ukutshaja ngokupheleleyo. Ukusebenzisa amandla aphezulu (afana nama-30kW nangaphezulu) ukuqonda ukutshajiswa okukhawulezileyo kwezithuthi zombane kuye kwaba lelona cala lilandelayo loyilo lokutshaja iimfumba. Ngaphandle kweenzuzo ngeemfumba zokutshaja zamandla aphezulu, kuzisa nemingeni emininzi, njengale: imfuno yokuqonda ukusebenza kokutshintsha kwamandla aphezulu, kunye nobushushu obuveliswa yilahleko yokuguqulwa. Nangona kunjalo, i-SiC MOSFET kunye neemveliso ze-diode zineempawu zokuxhathisa amandla ombane aphezulu, ukuxhathisa ubushushu obuphezulu, kunye nokutshintsha ngokukhawuleza okuphindaphindiweyo, okunokuthi kusetyenziswe kakuhle ukutshaja iimodyuli zemfumba. Xa kuthelekiswa nezixhobo zemveli ezisekelwe kwi-silicon, iimodyuli ze-silicon carbide zinokunyusa amandla emveliso yeemfumba zokutshaja phantse ngama-30%, kwaye zinciphise ilahleko nge-50%. Kwangaxeshanye, izixhobo ze-silicon carbide zinokuphucula ukuzinza kweemfumba zokutshaja. Ukutshaja iimfumba, iindleko zisengomnye wemiba ebalulekileyo ethintela uphuhliso, ngoko ke ukuxinana kwamandla eemfumba zokutshaja kubaluleke kakhulu, kwaye izixhobo ze-SiC zingundoqo ekuphumezeni ukuxinana kwamandla aphezulu. Njengesixhobo se-voltage ephezulu, isantya esiphezulu, kunye nephezulu-yangoku, izixhobo ze-silicon carbide zenza lula ubume besekethe yemodyuli yokutshaja yemfumba ye-DC, yonyusa inqanaba lamandla eyunithi, kwaye yandise kakhulu uxinano lwamandla, oluvula indlela yokunciphisa umbane. iindleko zenkqubo yemfumba yokutshaja. Ngokwembono yeendleko zexesha elide kunye nokusetyenziswa ngokufanelekileyo, iimfumba zokutshaja zamandla aphezulu zisebenzisa izixhobo ze-SiC ziya kuzisa amathuba amakhulu emarike. Ngokutsho kwedatha ye-CITIC Securities, okwangoku, izinga lokungena kwezixhobo ze-silicon carbide kwiimfumba zokutshaja iimoto zamandla zimalunga ne-10% kuphela, ekwashiya indawo ebanzi yeemfumba zokutshaja amandla aphezulu. Njengomthengisi ohamba phambili kwishishini lokutshaja kwe-DC, i-MIDA Power iphuhlise kwaye yakhulula imveliso yemodyuli yokutshaja enoxinano lwamandla aphezulu, imodyuli yokuqala ye-IP65 yokhuseleko lwenqanaba lokutshaja kunye nobuchwepheshe obuzimeleyo be-air duct. Ngeqela elomeleleyo le-R&D kunye nomgaqo-siseko ojolise kwimarike, Amandla e-MIDA anikele umzamo omkhulu kwaye aphuhlise ngempumelelo imodyuli yokutshaja eyi-40kW SiC esebenza ngokufanelekileyo. Ngobuchule obuchukumisayo obuphezulu obungaphezulu kwe-97% kunye noluhlu lwamandla ombane olubanzi kakhulu ukusuka kwi-150VDC ukuya kwi-1000VDC, imodyuli yokutshaja yeSiC eyi-40kW idibana phantse nayo yonke imigangatho yokufaka ehlabathini ngelixa igcina amandla ngokumangalisayo. Ngokukhula okukhawulezayo kwenani leemfumba zokutshaja, kukholelwa ukuba ii-SiC MOSFETs, kunye nemodyuli yokutshaja ye-MIDA Power 40kW SiC iya kusetyenziswa rhoqo kwimfumba yokutshaja efuna ukuxinana kwamandla aphezulu kwixesha elizayo.