Momwe mungayezere molondola zipangizo za SiC ndi GaN kuti mugwiritse ntchito bwino, kukonza magwiridwe antchito komanso kudalirika

M'badwo wachitatu wa ma semiconductor, omwe amaimiridwa ndi gallium nitride (GaN) ndi silicon carbide (SiC), apangidwa mwachangu chifukwa cha makhalidwe awo abwino kwambiri. Komabe, momwe mungayezere molondola magawo ndi makhalidwe a zida izi kuti mugwiritse ntchito bwino mphamvu zawo ndikuwonjezera magwiridwe antchito awo komanso kudalirika kwawo kumafuna zida zoyezera zolondola kwambiri komanso njira zaukadaulo.

Mbadwo watsopano wa zipangizo za wide band gap (WBG) zomwe zimaimiridwa ndi silicon carbide (SiC) ndi gallium nitride (GaN) zikugwiritsidwa ntchito kwambiri. Pamagetsi, zinthuzi zili pafupi ndi zotetezera kuposa silicon ndi zipangizo zina za semiconductor. Zinthuzi zimapangidwa kuti zithetse zofooka za silicon chifukwa ndi chinthu chopapatiza cha band-gap ndipo motero zimayambitsa kutuluka kwa mphamvu zamagetsi, zomwe zimaonekera kwambiri pamene kutentha, magetsi kapena ma frequency akuwonjezeka. Malire oyenera a kutuluka kumeneku ndi kuyendetsa kosalamulirika, kofanana ndi kulephera kwa ntchito ya semiconductor.

Mwa zipangizo ziwirizi zazikulu, GaN ndi yoyenera kwambiri kugwiritsa ntchito njira zoyendetsera magetsi otsika ndi apakati, pafupifupi 1 kV ndi pansi pa 100 A. Gawo limodzi lofunika kwambiri la kukula kwa GaN ndikugwiritsa ntchito kwake mu magetsi a LED, komanso kukula m'magwiritsidwe ntchito ena amphamvu ochepa monga magalimoto ndi kulumikizana kwa RF. Mosiyana ndi zimenezi, matekinoloje ozungulira SiC ndi opangidwa bwino kuposa GaN ndipo ndi oyenera kugwiritsa ntchito mphamvu zapamwamba monga ma inverter amagetsi, ma transmission amagetsi, zida zazikulu za HVAC, ndi machitidwe amafakitale.

Zipangizo za SiC zimatha kugwira ntchito pamagetsi okwera, ma switching frequency apamwamba, komanso kutentha kwambiri kuposa ma Si MOSFET. Pansi pa izi, SiC ili ndi magwiridwe antchito apamwamba, magwiridwe antchito, kuchuluka kwa mphamvu komanso kudalirika. Ubwino uwu ukuthandiza opanga mapulogalamu kuchepetsa kukula, kulemera ndi mtengo wa ma power converters kuti azitha kupikisana bwino, makamaka pamsika wopindulitsa monga ndege, magalimoto ankhondo ndi zamagetsi.

Ma SiC MOSFET amachita gawo lofunika kwambiri pakupanga zida zosinthira mphamvu za m'badwo wotsatira chifukwa cha kuthekera kwawo kupeza mphamvu zogwiritsira ntchito bwino kwambiri pamapangidwe otengera zigawo zazing'ono. Kusinthaku kumafunanso mainjiniya kuti ayang'anenso njira zina zopangira ndi kuyesa zomwe nthawi zambiri zimagwiritsidwa ntchito popanga zamagetsi zamagetsi.

Kufunika kwa mayeso okhwima kukukulirakulira

Kuti tizindikire bwino kuthekera kwa zipangizo za SiC ndi GaN, kuyeza kolondola kumafunika panthawi yosinthana kuti tiwongolere magwiridwe antchito ndi kudalirika. Njira zoyesera zida za SiC ndi GaN semiconductor ziyenera kuganizira kuchuluka kwa ma frequency ndi ma voltages a zida izi.

Kupanga zida zoyesera ndi zoyezera, monga ma generator ogwiritsira ntchito mosasamala (AFGs), ma oscilloscope, zida zoyezera gwero (SMU), ndi ma parameter analyzer, kukuthandiza mainjiniya opanga magetsi kupeza zotsatira zamphamvu mwachangu. Kusintha kumeneku kwa zida kukuwathandiza kuthana ndi mavuto a tsiku ndi tsiku. "Kuchepetsa kutayika kwa kusinthana kumakhalabe vuto lalikulu kwa mainjiniya a zida zamagetsi," adatero Jonathan Tucker, mkulu wa Power Supply Marketing ku Teck/Gishili. Mapangidwe awa ayenera kuyezedwa mosamala kuti atsimikizire kusinthasintha. Njira imodzi yofunika kwambiri yoyezera imatchedwa double pulse test (DPT), yomwe ndi njira yodziwika bwino yoyezera magawo osinthira a MOSFETs kapena zida zamagetsi za IGBT.

Kukhazikitsa kochita mayeso a SiC semiconductor double pulse kumaphatikizapo: jenereta yogwirira ntchito yoyendetsa gridi ya MOSFET; Oscilloscope ndi mapulogalamu owunikira poyesa VDS ndi ID. Kuphatikiza pa mayeso a double-pulse, ndiko kuti, kuwonjezera pa mayeso a circuit level, palinso mayeso a zinthu, mayeso a component level ndi mayeso a system level. Zatsopano mu zida zoyesera zathandiza mainjiniya opanga mapangidwe pa magawo onse a moyo kuti agwire ntchito yopangira zida zosinthira mphamvu zomwe zingakwaniritse zofunikira kwambiri pakupanga koma pamtengo wotsika.

Kukhala wokonzeka kutsimikizira zida poyankha kusintha kwa malamulo ndi zosowa zatsopano zaukadaulo pazida zogwiritsira ntchito, kuyambira kupanga magetsi mpaka magalimoto amagetsi, kumalola makampani omwe akugwira ntchito zamagetsi zamagetsi kuyang'ana kwambiri pazatsopano zowonjezera phindu ndikuyika maziko akukula kwamtsogolo.