Ihashe elihle lifanelwe yisihlalo esihle! Ukuze kusetyenziswe ngokupheleleyo iingenelo zezixhobo zeSiC, kuyimfuneko ukudibanisa inkqubo yesekethe nee-capacitors ezifanelekileyo. Ukusuka kulawulo oluphambili lokuqhuba kwizithuthi zombane ukuya kwiimeko zamandla amatsha ezinamandla aphezulu njengee-inverters ze-photovoltaic, ii-capacitors zefilimu ziya zisiba yinto eqhelekileyo kancinci kancinci, kwaye imakethi ifuna ngokungxamisekileyo iimveliso ezibiza kakhulu.
Kutshanje, iShanghai Yongming Electronic Co., Ltd. iqalise ii-capacitor zefilimu ezixhasayo ze-DC, ezineenzuzo ezine ezibalaseleyo ezenza zifaneleke kwi-IGBTs zesizukulwana sesixhenxe se-Infineon. Zikwanceda ekusombululeni imingeni yokuzinza, ukuthembeka, ukwenziwa kube lula, kunye neendleko kwiinkqubo ze-SiC.
Ii-capacitor zefilimu zifikelela phantse kwi-90% yokungena kwizicelo eziphambili ze-drive. Kutheni i-SiC kunye ne-IGBT zifuna zona?
Kwiminyaka yakutshanje, ngophuhliso olukhawulezileyo lwamashishini amatsha amandla afana nokugcina amandla, ukutshaja, kunye nezithuthi zombane (ii-EV), imfuno yee-capacitors ze-DC-Link ibikhula ngokukhawuleza. Ngamafutshane, ii-capacitors ze-DC-Link zisebenza njengee-buffers kwiisekethe, zifunxa imisinga ephezulu ye-pulse ukusuka kwisiphelo sebhasi kwaye zithambise i-voltage yebhasi, ngaloo ndlela zikhusela ii-IGBT kunye ne-SiC MOSFET switches kwimisinga ephezulu ye-pulse kunye nefuthe le-voltage yesikhashana.
Ngokwesiqhelo, ii-capacitors ze-aluminium electrolytic zisetyenziswa kwizicelo zenkxaso ye-DC. Nangona kunjalo, njengoko i-voltage yebhasi yezithuthi ezintsha zamandla inyuka ukusuka kwi-400V ukuya kwi-800V kunye neenkqubo ze-photovoltaic zisiya kwi-1500V kwanakwi-2000V, imfuno yee-capacitors zefilimu iyanda kakhulu.
Idatha ibonisa ukuba ngo-2022, amandla afakiweyo ee-inverters zokuqhuba umbane ezisekelwe kwii-capacitors zefilimu ze-DC-Link afikelele kwiiyunithi ezizizigidi ezi-5.1117, ezibalelwa kwi-88.7% yamandla afakiweyo ee-controls ze-elektroniki. Iinkampani eziphambili zokulawula umbane ezifana neFudi Power, iTesla, iInovance Technology, iNidec, kunye neWiran Power zonke zisebenzisa ii-capacitors zefilimu ze-DC-Link kwii-inverters zazo zokuqhuba, kunye nomlinganiselo womthamo odibeneyo ofakiweyo ofikelela kwi-82.9%. Oku kubonisa ukuba ii-capacitors zefilimu zithathe indawo yee-capacitors ze-electrolytic njengezona ziphambili kwimarike ye-electric drive.
Oku kungenxa yokuba ukumelana okuphezulu kwe-voltage kwii-capacitors ze-aluminium electrolytic kumalunga ne-630V. Kwi-voltage ephezulu kunye nokusetyenziswa kwamandla aphezulu ngaphezu kwe-700V, ii-capacitors ezininzi ze-electrolytic kufuneka ziqhagamshelwe ngokulandelelana nangokuhambelanayo ukuze kuhlangatyezwane neemfuno zokusetyenziswa, nto leyo ezisa ilahleko eyongezelelweyo yamandla, iindleko ze-BOM, kunye nemiba yokuthembeka.
Iphepha lophando elivela kwiYunivesithi yaseMalaysia libonisa ukuba ii-capacitors ze-electrolytic zihlala zisetyenziswa kwikhonkco le-DC le-silicon IGBT half-bridge inverters, kodwa ukunyuka kwe-voltage kunokwenzeka ngenxa yokumelana okuphezulu kwe-electrolytic series (ESR) yee-capacitors ze-electrolytic. Xa kuthelekiswa nezisombululo ze-IGBT ezisekelwe kwi-silicon, ii-SiC MOSFET zine-switching frequency ephezulu, nto leyo ebangela ukuba i-voltage surge amplitudes ephezulu kwikhonkco le-DC le-half-bridge inverters. Oku kunokukhokelela ekuwohlokeni kokusebenza kwesixhobo okanye kwanokonakala, njengoko i-resonant frequency yee-capacitors ze-electrolytic yi-4kHz kuphela, enganeleyo ukufunxa i-current ripple yee-inverters ze-SiC MOSFET.
Ke ngoko, kwizicelo zeDC ezineemfuno eziphezulu zokuthembeka, ezifana nee-inverters zombane kunye nee-inverters ze-photovoltaic, ii-capacitors zefilimu zihlala zikhethwa. Xa kuthelekiswa nee-capacitors ze-aluminium electrolytic, iingenelo zazo zokusebenza ziquka ukumelana nombane ophezulu, i-ESR ephantsi, ukungabikho kwe-polarity, ukusebenza okuzinzileyo, kunye nobomi obude, okuvumela uyilo lwenkqubo oluthembekileyo ngakumbi olunokumelana nokuqina kwe-ripple.
Ukongeza, ukusebenzisa ii-capacitors zefilimu kwinkqubo kunokusebenzisa ngokuphindaphindiweyo iingenelo eziphezulu neziphantsi zokulahleka kwe-SiC MOSFET, kunciphisa kakhulu ubungakanani kunye nobunzima bezinto ezingasebenziyo (ii-inductors, ii-transformers, ii-capacitors) kwinkqubo. Ngokutsho kophando lweWolfspeed, i-inverter ye-IGBT esekwe kwi-silicon eyi-10kW ifuna ii-capacitors ze-aluminium electrolytic ezingama-22, ngelixa i-inverter ye-SiC engama-40kW ifuna ii-capacitors zefilimu ezisi-8 kuphela, nto leyo enciphisa kakhulu indawo ye-PCB.
I-YMIN iqalisa ii-Film Capacitors ezintsha ezineengenelo ezine eziphambili zokuxhasa imboni entsha yamandla
Ukujongana neemfuno ezingxamisekileyo zemarike, i-YMIN isandula ukuqalisa uthotho lwee-capacitors zefilimu ezixhasayo ze-DC ze-MDP kunye ne-MDR. Zisebenzisa iinkqubo zokuvelisa eziphambili kunye nezixhobo ezikumgangatho ophezulu, ezi capacitors zihambelana ngokugqibeleleyo neemfuno zokusebenza ze-SiC MOSFETs kunye ne-IGBTs ezisekelwe kwi-silicon ezivela kwiinkokheli ze-semiconductor zamandla zehlabathi ezifana ne-Infineon.
Ii-capacitor zefilimu ze-MDP kunye ne-MDR ze-YMIN zinezinto ezininzi eziphawulekayo: ukumelana nochungechunge olulinganayo oluphantsi (ESR), i-voltage ephezulu, umsinga wokuvuza ophantsi, kunye nozinzo lobushushu oluphezulu.
Okokuqala, ii-capacitor zefilimu ze-YMIN zinoyilo oluphantsi lwe-ESR, nto leyo enciphisa ngempumelelo uxinzelelo lwe-voltage ngexesha lokutshintsha ii-SiC MOSFET kunye nee-IGBT ezisekwe kwi-silicon, ngaloo ndlela zinciphisa ukulahleka kwe-capacitor kunye nokuphucula ukusebenza kakuhle kwenkqubo iyonke. Ukongeza, ezi capacitor zinomthamo ophezulu, okwaziyo ukumelana neemeko eziphezulu ze-voltage kunye nokuqinisekisa ukusebenza okuzinzileyo kwenkqubo.
Uthotho lwee-capacitors zefilimu ze-YMIN ze-MDP kunye ne-MDR zibonelela ngemiqolo ye-capacitance ye-5uF-150uF kunye ne-50uF-3000uF, kunye nemiqolo ye-voltage ye-350V-1500V kunye ne-350V-2200V, ngokwahlukeneyo.
Okwesibini, ii-capacitor zefilimu zamva nje ze-YMIN zinomsinga wokuvuza ophantsi kunye nozinzo oluphezulu lobushushu. Kwimeko yeenkqubo zolawulo lwe-elektroniki zezithuthi zombane, ezidla ngokuba namandla aphezulu, ukuveliswa kobushushu okubangelwayo kunokuchaphazela kakhulu ubomi kunye nokuthembeka kwee-capacitor zefilimu. Ukujongana noku, uthotho lwe-MDP kunye ne-MDR oluvela kwi-YMIN lubandakanya izixhobo ezikumgangatho ophezulu kunye neendlela zokuvelisa eziphambili ukuyila isakhiwo sobushushu esiphuculweyo see-capacitors. Oku kuqinisekisa ukusebenza okuzinzileyo nakwiindawo ezinobushushu obuphezulu, ukuthintela ukwehla kwexabiso le-capacitor okanye ukungaphumeleli ngenxa yokunyuka kobushushu. Ngaphezu koko, ezi capacitors zinobomi obude, zibonelela ngenkxaso ethembekileyo ngakumbi kwiinkqubo ze-elektroniki zamandla.
Okwesithathu, ii-capacitor ze-MDP kunye ne-MDR ezivela kwi-YMIN zinobukhulu obuncinci kunye noxinano lwamandla aphezulu. Umzekelo, kwiinkqubo zombane ze-800V, umkhwa kukusebenzisa izixhobo ze-SiC ukunciphisa ubungakanani bee-capacitors kunye nezinye izinto ezingasebenziyo, ngaloo ndlela kukhuthaza ukwenziwa lula kolawulo lwe-elektroniki. I-YMIN isebenzise itekhnoloji entsha yokuvelisa iifilimu, engagcini nje ngokwandisa ukuhlanganiswa kwenkqubo iyonke kunye nokusebenza kakuhle kodwa ikwanciphisa ubungakanani benkqubo kunye nobunzima, iphucula ukuthwaleka kunye nokuguquguquka kwezixhobo.
Lilonke, uthotho lwe-DC-Link film capacitor ye-YMIN lubonelela ngophuculo lwe-30% kubuchule bokumelana ne-dv/dt kunye nokwanda kwexesha lokuphila kwe-30% xa kuthelekiswa nezinye ii-capacitor zefilimu ezikwimarike. Oku akuboneleli nje kuphela ngokuthembeka okungcono kwiisekethe ze-SiC/IGBT kodwa kukwabonelela nangokusebenza ngcono kweendleko, ukoyisa imiqobo yamaxabiso ekusetyenzisweni ngokubanzi kwee-capacitor zefilimu.
Njengovulindlela kushishino, i-YMIN ibisoloko ibandakanyeka kakhulu kwicandelo le-capacitor kangangeminyaka engaphezu kwama-20. Ii-capacitor zayo ze-high voltage zisetyenziswe ngokuzinzileyo kwiindawo eziphezulu ezifana ne-OBC ekwibhodi, ii-piles ezintsha zokutshaja amandla, ii-inverters ze-photovoltaic, kunye neerobhothi zoshishino kangangeminyaka emininzi. Esi sizukulwana sitsha seemveliso ze-capacitor zefilimu sisombulula imingeni eyahlukeneyo kulawulo lwenkqubo yokuvelisa i-capacitor yefilimu kunye nezixhobo, sigqibe isiqinisekiso sokuthembeka kunye namashishini aphambili ehlabathi, kwaye siphumelele ukusetyenziswa okukhulu, siqinisekisa ukuthembeka kwemveliso kubathengi abakhulu. Kwixesha elizayo, i-YMIN iya kusebenzisa ukuqokelela kwayo kobugcisa bexesha elide ukuxhasa uphuhliso olukhawulezileyo lweshishini elitsha lamandla ngemveliso ze-capacitor ezithembekileyo nezingabizi kakhulu.
Ukuze ufumane ulwazi oluthe kratya, nceda undwendwelewww.ymin.cn.
Ixesha leposi: Julayi-07-2024