Chizvarwa chechitatu chesemiconductors, inomiririrwa negallium nitride (GaN) uye silicon carbide (SiC), yakakurumidza kugadzirwa nekuda kwehunhu hwavo hwakanaka. Nekudaro, maitiro ekuyera nemazvo maparamendi uye maitiro ezvishandiso izvi kuitira kuti ubate kugona kwavo uye nekugonesa kugona kwavo uye kuvimbika kunoda yakakwirira-chaiyo yekuyeresa michina uye nehunyanzvi nzira.
Chizvarwa chitsva cheyakakura band gap (WBG) zvinhu zvinomiririrwa nesilicon carbide (SiC) uye gallium nitride (GaN) zviri kuwedzera uye zvakanyanya kushandiswa. Nemagetsi, zvinhu izvi zviri padhuze kune insulators pane silicon uye zvimwe zvakajairika semiconductor zvinhu. Izvi zvinhu zvakagadzirirwa kukurira zvipimo zvesilicon nekuti idiki bhendi-gap zvinhu uye nekudaro zvinokonzeresa kudonha kwemagetsi conductivity, izvo zvinova zvakanyanya kutaurwa sezvo tembiricha, voltage kana frequency inowedzera. Muganho une musoro kune iyi leak ndeye isingadzoreki conductivity, yakaenzana nekutadza kushanda semiconductor.
Pakati pezviviri izvi zvakakura bhendi gap zvinhu, GaN inonyanya kukodzera zvirongwa zvekushandisa simba zvishoma uye zvepakati, zvakapoteredza 1 kV uye pasi pe100 A. Imwe nzvimbo inokosha yekukura kweGaN kushandiswa kwayo mukuvhenekera kwe LED, asiwo kukura mune mamwe mashandisi emagetsi mashoma. senge mota uye RF kutaurirana. Kusiyana neizvi, matekinoroji akatenderedza SiC akagadziridzwa zvirinani pane GaN uye anokodzera zvirinani kune epamusoro masimba ekushandisa senge emagetsi mota traction inverters, kufambisa kwemagetsi, hombe HVAC michina, uye maindasitiri masisitimu.
Zvishandiso zveSiC zvinokwanisa kushanda pamagetsi epamusoro, ma frequency ekuchinja, uye tembiricha yakakwira kupfuura maSi MOSFET. Pasi pemamiriro aya, SiC ine kushanda kwepamusoro, kushanda zvakanaka, kusimba kwesimba uye kuvimbika. Aya mabhenefiti ari kubatsira vagadziri kudzikisira saizi, huremu uye mutengo wemagetsi anoshandura kuti awedzere kukwikwidza, kunyanya muzvikamu zvemusika zvinopa mari zvakaita sendege, mauto nemotokari dzemagetsi.
MaSiC MOSFET anoita basa rakakosha mukugadzirwa kwechinotevera-chizvarwa chekushandura magetsi maturusi nekuda kwekugona kwavo kuwana hukuru hwesimba mukugadzira kwakavakirwa pane zvidiki zvikamu. Iko kushanduka kunodawo mainjiniya kuti adzokorore mamwe edhizaini uye matekiniki ekuyedza agara achishandiswa kugadzira magetsi emagetsi.
Iko kudiwa kwekuyedzwa kwakasimba kuri kukura
Kuti unyatsoona kugona kweSiC neGaN zvishandiso, zviyero chaizvo zvinodikanwa panguva yekuchinjisa mashandiro kuti uwedzere kushanda uye kuvimbika. Maitirwo ekuyedza eSiC neGaN semiconductor zvishandiso zvinofanirwa kufunga nezve yakakwira ma frequency ekushanda uye voltages emidziyo iyi.
Kuvandudzwa kwezvishandiso zvekuyedza uye zvekuyera, senge majenareta ekuita basa (AFGs), oscilloscopes, sosi yekuyera unit (SMU) zviridzwa, uye parameter analyzer, iri kubatsira magetsi ekugadzira enjiniya kuwana mhedzisiro ine simba nekukurumidza. Uku kukwidziridzwa kwemidziyo kuri kuvabatsira kubata nematambudziko ezuva nezuva. "Kuderedza kurasikirwa kwekuchinja kunoramba kuri dambudziko guru kune mainjiniya emagetsi," akadaro Jonathan Tucker, mukuru wePower Supply Marketing kuTeck/Gishili. Aya madhizaini anofanirwa kuyerwa zvakasimba kuti ave nechokwadi chekuenderana. Imwe yemaitiro akakosha ekuyeresa inodaidzwa kuti double pulse test (DPT), inova ndiyo nzira yakajairwa yekuyera machinjiro emagetsi eMOSFET kana IGBT magetsi.
Setup kuita SiC semiconductor kaviri pulse test inosanganisira: basa jenareta kutyaira MOSFET grid; Oscilloscope uye yekuongorora software yekuyera VDS uye ID. Kuwedzera kune kaviri-pulse kuyedzwa, ndiko kuti, mukuwedzera kune yedunhu kuyedzwa kwemazinga, kune zvinhu nhanho yekuyedza, chikamu chechikamu cheyedzo uye system level yekuyedza. Hutsva hwematurusi ekuyedza hwakagonesa mainjiniya edhizaini pamatanho ese ehupenyu kuti ashande akananga kumagetsi ekushandura maturusi ayo anogona kusangana neakaomesesa dhizaini zvinodiwa zvine mutengo.
Kuve wakagadzirira kuvimbisa michina mukupindura shanduko yemitemo uye zvitsva zvinodiwa zvetekinoroji zvekupedzisira-mushandisi zvishandiso, kubva pakugadzira magetsi kusvika kumotokari dzemagetsi, inobvumira makambani anoshanda pamagetsi emagetsi kuti atarise pane kukosha-yakawedzera hunyanzvi uye kuisa hwaro hwekukura mune ramangwana.
Nguva yekutumira: Mar-27-2023