Kwiminyaka yakutshanje, uphuhliso olukhulayo lwamashishini amatsha amandla afana ne-photovoltaic storage kunye nezithuthi zombane (ii-EV) lukhokelele ekwandeni okukhulu kwemfuno yee-capacitors ze-DC-Link. Ngamafutshane, ii-capacitors ze-DC-Link zidlala indima ebalulekileyo kwisekethe. Zinokufunxa imisinga ephezulu ye-pulse ekupheleni kwebhasi kwaye zithambise i-voltage yebhasi, ziqinisekisa ukuba ii-switches ze-IGBT kunye ne-SiC MOSFET zikhuselekile kwimiphumo emibi yemisinga ephezulu ye-pulse kunye ne-voltages ezidlulayo ngexesha lokusebenza.
Njengoko i-voltage yebhasi yezithuthi ezintsha zamandla isanda ukusuka kwi-400V ukuya kwi-800V, imfuno yee-capacitors zefilimu inyukile kakhulu. Ngokwedatha, amandla afakiweyo ee-inverters zokuqhuba umbane ezisekwe kwii-capacitors ze-DC-Link thin-film afikelele kwi-5.1117 yezigidi zeeseti ngo-2022, ezibalelwa kwi-88.7% yamandla afakiweyo olawulo lombane. Ii-inverters zokuqhuba zeenkampani ezininzi eziphambili zolawulo lombane ezifana neTesla kunye neNidec zonke zisebenzisa ii-capacitors zefilimu zeDC-Link, ezibalelwa kwi-82.9% yamandla afakiweyo kwaye ziye zaba lukhetho oluphambili kwimarike ye-electric drive.
Amaphepha ophando abonisa ukuba kwii-silicon IGBT half-bridge inverters, ii-capacitor ze-electrolytic zemveli zihlala zisetyenziswa kwi-DC link, kodwa ukunyuka kwe-voltage kuya kwenzeka ngenxa ye-ESR ephezulu yee-capacitors ze-electrolytic. Xa kuthelekiswa nezisombululo ze-IGBT ezisekelwe kwi-silicon, ii-SiC MOSFET zine-switching frequency ephezulu, ngoko ke i-voltage surge amplitude kwi-DC link ye-half-bridge inverter iphezulu, nto leyo enokubangela ukuwohloka kokusebenza kwesixhobo okanye kwanokonakala, kwaye i-resonant frequency yee-capacitors ze-electrolytic yi-4kHz kuphela, into enganelanga ukufunxa i-current ripple yee-inverters ze-SiC MOSFET.
Ke ngoko, kwizicelo zeDC ezifana nee-inverters zombane kunye nee-inverters ze-photovoltaic ezineemfuno zokuthembeka okuphezulu,ii-capacitors zefilimuzidla ngokukhethwa. Xa kuthelekiswa nee-capacitors ze-aluminium electrolytic, iingenelo zazo zokusebenza kukumelana okuphezulu kwe-voltage, i-ESR ephantsi, i-non-polarity, ukusebenza okuzinzileyo ngakumbi, kunye nobomi obude, ngaloo ndlela kufikelela kukumelana okunamandla kwe-ripple kunye noyilo lwenkqubo oluthembekileyo ngakumbi.
Iinkqubo ezisebenzisa ii-capacitors zefilimu encinci zinokusebenzisa ithuba lokulahleka okuphezulu kunye nokulahleka okuphantsi kwee-SiC MOSFETs kwaye zinciphise ubungakanani kunye nobunzima bezinto ezingasebenziyo. Uphando lweWolfspeed lubonisa ukuba 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 encinci ezisi-8 kuphela, kwaye indawo ye-PCB nayo inciphile kakhulu.
Ukuphendula kwimfuno yemarike, i-YMIN Electronics iqalise i-Uthotho lwee-capacitors zefilimu ze-MDP, ezisebenzisa ubuchwepheshe obuphambili kunye nezixhobo ezikumgangatho ophezulu ukuze zilungelelane neSiC MOSFET kunye ne-IGBT esekwe kwisilicon. Ii-capacitors ze-MDP series zine-ESR ephantsi, i-voltage ephezulu yokumelana, i-leaking current ephantsi kunye nozinzo lobushushu obuphezulu.
Iingenelo zeemveliso ze-capacitor zefilimu ze-YMIN Electronics:
Uyilo lwe-capacitor yefilimu ye-YMIN Electronics lusebenzisa ingcamango ye-ESR ephantsi ukunciphisa uxinzelelo lwe-voltage kunye nokulahleka kwamandla ngexesha lokutshintsha kunye nokuphucula ukusebenza kakuhle kwamandla enkqubo. Ine-voltage ephezulu, iyaziqhelanisa neendawo ze-voltage ephezulu, kwaye iqinisekisa uzinzo lwenkqubo.
Ii-capacitor ze-MDP series zinoluhlu lomthamo we-1uF-500uF kunye noluhlu lwe-voltage oluyi-500V ukuya kwi-1500V. Zinombane ovuzayo ophantsi kunye nozinzo oluphezulu lobushushu. Ngezixhobo ezikumgangatho ophezulu kunye neenkqubo eziphambili, isakhiwo esisebenzayo sokusasaza ubushushu senzelwe ukuqinisekisa ukusebenza okuzinzileyo kumaqondo obushushu aphezulu, ukwandisa ubomi benkonzo, kunye nokubonelela ngenkxaso ethembekileyo kwiinkqubo ze-elektroniki zamandla. Kwangaxeshanye,Ii-capacitors ze-MDP seriesZincinci ngobukhulu, zinamandla amaninzi, kwaye zisebenzisa iinkqubo ezintsha zokwenza iifilimu ezincinci ukuphucula ukuhlanganiswa kwenkqubo kunye nokusebenza kakuhle, ukunciphisa ubungakanani kunye nobunzima, kunye nokwandisa ukuthwaleka kunye nokuguquguquka kwezixhobo.
Uthotho lwe-YMIN Electronics DC-Link film capacitor luphucuke ngama-30% ekunyamezeleni i-dv/dt kunye nokwanda kwama-30% kubomi benkonzo, nto leyo ephucula ukuthembeka kweesekethe ze-SiC/IGBT, izisa ukusebenza kakuhle kweendleko, kwaye isombulula ingxaki yamaxabiso.
Ixesha lokuposa: Jan-10-2025