Chizvarwa chechitatu chema semiconductors, chinomiririrwa ne gallium nitride (GaN) uye silicon carbide (SiC), chakagadzirwa nekukurumidza nekuda kwehunhu hwazvo hwakanaka. Zvisinei, nzira yekuyera nemazvo ma parameters nehunhu hwezvishandiso izvi kuitira kushandisa kugona kwazvo uye kugadzirisa kushanda kwazvo uye kuvimbika kunoda michina yekuyera yakanyatsojeka uye nzira dzehunyanzvi.
Chizvarwa chitsva chezvinhu zve wide band gap (WBG) zvinomiririrwa nesilicon carbide (SiC) uye gallium nitride (GaN) zviri kushandiswa zvakanyanya. Pamagetsi, zvinhu izvi zviri pedyo neinsulator kupfuura silicon nezvimwe zvinhu zve semiconductor. Zvinhu izvi zvakagadzirirwa kukunda miganhu yesilicon nekuti isimbi yakamanikana uye nokudaro inokonzera kubuda kwemhepo isina simba, iyo inowedzera kuoneka kana tembiricha, voltage kana frequency ichiwedzera. Muganho une musoro wekubuda kwemhepo uku i conductivity isingadzoreki, yakaenzana nekukundikana kwekushanda kwe semiconductor.
Pazvinhu zviviri izvi zvine miganhu yakakura, GaN inonyanya kukodzera zvirongwa zvekushandisa magetsi mashoma nepakati, angangoita 1 kV uye pasi pe100 A. Imwe nzvimbo yakakura yekukura kweGaN ndeyekushandiswa kwayo mumwenje we LED, asiwo kukura mune mamwe mashandisirwo emagetsi mashoma akadai sekutaurirana kwemotokari neRF. Kusiyana neizvi, matekinoroji akapoteredza SiC akagadzirwa zviri nani pane GaN uye akakodzera zviri nani kune mashandisirwo emagetsi akakwira akadai semagetsi emagetsi anodhonza ma inverters, transmission yemagetsi, michina mikuru yeHVAC, uye masisitimu emaindasitiri.
Midziyo yeSiC inokwanisa kushanda pamagetsi akakwira, ma switching frequency akakwira, uye tembiricha yakakwira kupfuura maSi MOSFET. Pasi pemamiriro ezvinhu aya, SiC ine mashandiro akakwira, kushanda zvakanaka, simba rakawanda uye kuvimbika. Mabhenefiti aya ari kubatsira vagadziri kuderedza saizi, huremu uye mutengo wemagetsi anochinja magetsi kuti awedzere kukwikwidzana, kunyanya muzvikamu zvemusika zvinopa mari yakawanda zvakaita sendege, mota dzehondo nedzemagetsi.
MaSiC MOSFET anoita basa rakakosha mukugadzirwa kwemidziyo yekushandura simba yechizvarwa chinotevera nekuda kwekukwanisa kwavo kuwana simba rakawanda mukugadzira zvichibva pazvikamu zvidiki. Kuchinja uku kunodawo kuti mainjiniya vaongorore mamwe matekiniki ekugadzira nekuyedza aishandiswa kugadzira magetsi emagetsi.
Kudiwa kwekuyedzwa kwakasimba kuri kukura
Kuti zvinyatsoonekwa kugona kweSiC neGaN zvishandiso, kuyerwa kwakarurama kunodiwa panguva yekushanda kwekuchinjana kuti zviwedzere kushanda zvakanaka uye kuvimbika. Maitiro ekuyedza michina yeSiC neGaN semiconductor anofanirwa kufunga nezvemafrequency ekushanda akakwira uye voltages dzemidziyo iyi.
Kugadzirwa kwezvishandiso zvekuyedza nekuyera, zvakaita semajenareta ebasa asingatarisirwi (AFGs), maoscilloscope, zvishandiso zvekuyera mayuniti ekuyera (SMU), uye ma parameter analyzers, kuri kubatsira mainjiniya ekugadzira magetsi kuwana mhedzisiro ine simba nekukurumidza. Kuvandudzwa uku kwezvishandiso kuri kuvabatsira kugadzirisa matambudziko ezuva nezuva. "Kuderedza kurasikirwa kwekuchinja kuchiri dambudziko guru kune mainjiniya ezvishandiso zvemagetsi," akadaro Jonathan Tucker, mukuru wePower Supply Marketing kuTeck/Gishili. Magadzirirwo aya anofanirwa kuyerwa zvakasimba kuti ave nechokwadi chekuti zvinhu zvinoenderana. Imwe yenzira huru dzekuyera inonzi double pulse test (DPT), inova ndiyo nzira yakajairika yekuyera ma switching parameters eMOSFETs kana IGBT power devices.
Kugadzika kweSiC semiconductor double pulse test kunosanganisira: function generator yekufambisa MOSFET grid; Oscilloscope nesoftware yekuongorora yekuyera VDS neID. Pamusoro pekuyedza double-pulse, ndiko kuti, pamusoro pekuyedza circuit level, kune kuyedza zvinhu, kuyedza component level uye kuyedza system level. Kuvandudzwa kwezvishandiso zvekuyedza kwakagonesa mainjiniya ekugadzira pamatanho ese ehupenyu kuti vashande pakugadzira zvishandiso zvemagetsi zvinogona kusangana nezvinodiwa zvekugadzira zvakaoma uye zvinodhura.
Kugadzirira kupa zvitupa zvemichina zvichienderana nekuchinja kwemitemo uye zvinodiwa zvetekinoroji pamichina yekushandisa, kubva pakugadzira magetsi kusvika kumotokari dzemagetsi, kunobvumira makambani anoshanda pamagetsi emagetsi kuti atarise pakuvandudza zvinhu zvitsva uye kuisa hwaro hwekukura mune ramangwana.
Nguva yekutumira: Kurume-27-2023