Imakethi yokutshaja ngokukhawuleza yehlabathi kulindeleke ukuba ikhule kwi-CAGR ye-22.1% ukusuka ngo-2023 ukuya kowama-2030 (uPhando lweGrand View, ngo-2023), oluqhutywa kukunyuka kwemfuno yezithuthi zombane kunye ne-elektroniki ephathekayo. Nangona kunjalo, ukuphazamiseka kwe-electromagnetic interference (EMI) kuhlala kungumngeni obalulekileyo, kunye ne-68% yokusilela kwenkqubo kwizixhobo zokutshaja zamandla aphezulu ezilandelwa kulawulo olungafanelekanga lwe-EMI (IEEE Transactions on Power Electronics, 2022). Eli nqaku lityhila izicwangciso ezisebenzayo zokulwa ne-EMI ngelixa kugcinwa ukusebenza kakuhle kokutshaja.
1. Ukuqonda iMithombo ye-EMI ngokuTshaja ngokukhawuleza
1.1 Ukutshintsha iFrequency Dynamics
Iitshaja ze-GaN zanamhlanje (i-Gallium Nitride) zisebenza kwii-frequencies ezingaphezu kwe-1 MHz, zivelisa ukuphazamiseka kwe-harmonic ukuya kuma-30. Uphononongo lwe-MIT luka-2024 lubonise ukuba i-65% ye-EMI ekhutshwayo ivela:
•I-MOSFET/IGBT yokutshintsha izinto ezidlulayo (42%)
•Inductor-core saturation (23%)
•Iiparasikhi zoyilo lwePCB (18%)
1.2 I-Radiated vs I-EMI eqhutywayo
•Radiated EMI: Incopho kuluhlu 200-500 MHz (FCC Class B imida: ≤40 dBμV/m @ 3m)
•KuqhutywaEMI: Okubalulekileyo 150 kHz-30 MHz band (CISPR 32 imigangatho: ≤60 dBμV quasi-incopho)
2. IiNdlela zokuNciphisa ezingundoqo
2.1 I-Architecture yokuKhusela iiLayiri ezininzi
Indlela yenqanaba eli-3 inikezela nge-40-60 dB ukuthomalalisa:
• Ukhuselo lwenqanaba lecandelo:Amaso eFerrite kwi-DC-DC converter outputs (inciphisa ingxolo nge-15-20 dB)
• Isithintelo somgangatho webhodi:Amakhonkco okugada ePCB azaliswe lubhedu (iibhloko ezingama-85% zokudibanisa kufutshane nentsimi)
• Indawo evalekileyo yomgangatho wenkqubo:Iindawo ezivaliweyo zeMu-metal ezinegaskets eziqhubayo (ukunciphisa: 30 dB @ 1 GHz)
2.2 IiTopolologi zeSihluzo esiPhezulu
• Izihluzi zemowudi eyahlukileyo:Ulungelelwaniso lwe-LC ye-3rd (i-80% yoxinzelelo lwengxolo @ 100 kHz)
• Imikhwa eqhelekileyo:I-Nanocrystalline cores ene>90% yokugcinwa kwe-permeability kwi-100 ° C
• Ukucinywa kwe-EMI okusebenzayo:Uhluzo lwexesha lokwenyani (lunciphisa ubalo lwamacandelo ngama-40%)
3. IziCwangciso zoYilo lokuPhucula
3.1 UYilo lwePCB ezona Sebenzi ziLungileyo
• Ukwahlulwa kwendlela ebalulekileyo:Gcina i-5 × umkhondo wobubanzi besithuba phakathi kwamandla kunye nemigca yesignali
• Ufezekiso lwenqwelomoya ephantsi:Iibhodi ezine-4 ezine-<2 mΩ impedance (inciphisa ukutsiba komhlaba nge-35%)
• Ngokuthunga:0.5 mm inowuthi ngoluhlu olujikeleze imimandla ye-high-di/dt
3.2 I-Thermal-EMI Co-Design
Ukulinganisa kweThermal kubonisa:
4. Ukuthotyelwa kunye noVavanyo lweMigaqo
4.1 Inkqubo yoVavanyo lokuthotyelwa kokuthotyelwa
• Ukukhangela indawo ekufutshane:Ichonga iindawo ezixhaphakileyo ezinokulungiswa kwendawo eyi-1 mm
• Time-domain reflectometry:Ifumana ukuchaneka kwe-impedance ngaphakathi kwe-5% yokuchaneka
• Isoftware ye-EMC ezenzekelayo:Ukulinganisa kwe-ANSYS HFSS kuhambelana neziphumo zelebhu ngaphakathi kwe ±3 dB
4.2 iGlobal Certification Roadmap
• Icandelo le-FCC 15 Icandelwana B:Izigunyaziso <48 dBμV/m ezikhutshwa ngemitha (30-1000 MHz)
• I-CISPR 32 iKlasi 3:Ifuna i-6 dB ekhutshwayo esezantsi kuneKlasi B kwiindawo zoshishino
• I-MIL-STD-461G:Imiba yomgangatho womkhosi kwiinkqubo zokutshaja kufakelo olubuthathaka
5. Izisombululo ezikhulayo kunye neMida yoPhando
5.1 I-Meta-material Absorbers
Iimetaterials ezisekwe kwigraphene zibonisa:
•I-97% yokusebenza kakuhle kwi-2.45 GHz
•0.5 mm ubukhulu kunye ne-40 dB yodwa
5.2 ITekhnoloji yeTwin yeDijithali
Iinkqubo ze-EMI zexesha lokwenyani:
•I-92% yokunxibelelana phakathi kweeprototypes ezibonakalayo kunye novavanyo lomzimba
•Yehlisa imijikelo yophuhliso ngama-60%
Ukuxhobisa izisombululo zakho zokuTjaja nge-EV ngobuGcisa
I-Linkpower njengomvelisi wetshaja we-EV okhokelayo, sisebenza ngokukhethekileyo ekuhambiseni iinkqubo zokutshaja ezikhawulezileyo ze-EMI ezidibanisa ngaphandle komthungo amaqhinga abukhali achazwe kweli nqaku. Amandla angundoqo kumzi mveliso wethu aquka:
• UBugcisa obugcweleyo be-EMI:Ukusuka kulwakhiwo olunemigangatho emininzi lokhuselo ukuya kwi-AI eqhutywa yi-AI yokulinganisa amawele edijithali, siphumeza uyilo oluthobelayo lwe-MIL-STD-461G oluqinisekiswe ngeeprothokholi zovavanyo eziqinisekisiweyo ze-ANSYS.
• I-Thermal-EMI Co-Engineering:Iisistim zokupholisa zesigaba sobunini zigcina i-<2 dB EMI inguqu kwi--40 ° C ukuya kwi-85 ° C yoluhlu lokusebenza.
• Uyilo oluLungele iSiqinisekiso:I-94% yabathengi bethu bafezekisa ukuthotyelwa kweFCC / CISPR ngaphakathi kovavanyo lokuqala, ukunciphisa ixesha lokuthengisa nge-50%.
Kutheni usebenzisana nathi?
• Izisombululo zokuya esiphelweni:Uyilo olunokwenziwa ngokwezifiso ukusuka kwiitshaja zedepo ezingama-20 kW ukuya kuma-350 kW kwiinkqubo ezikhawuleza kakhulu
• 24/7 Inkxaso yobuGcisa:Ukuxilongwa kwe-EMI kunye nokulungiswa kwe-firmware ngokubeka iliso kude
• Uphuculo lobungqina bexesha elizayo:I-Graphene meta-material retrofits yothungelwano lokutshaja oluhambelana ne-5G
Qhagamshelana neqela lethu lobunjineliye-EMI yasimahlauphicotho lweenkqubo zakho ezikhoyo okanye ujonge ezethuiipotfoliyo zemodyuli zokutshaja eziqinisekiswe kwangaphambili. Masenze ngokubambisana isizukulwana esilandelayo sokungaphazamisi, izisombululo zokutshaja ezisebenza ngokufanelekileyo.
Ixesha lokuposa: Feb-20-2025