Dhizaini nzira yeEMI sefa yekugovera magetsi
EMI mafirita anodiwa kuchengetedza midziyo yemagetsi kubva kune electromagnetic interference (EMI).Sefa dhizaini uye kusarudzwa kunoenderana neEMI mirau, magetsi makodhi, uye zvimwe dhizaini zvinodiwa.Muzviitiko zvakawanda, mafirita ari kure-pasherufu anokwana kunyorera, asi kazhinji, tsika EMI sefa mhinduro inova yakakosha kusangana neapplication-chaiyo paramita.
Sei Unogona Kuda Tsika DhizainiEMI SefaSolution
Mhedzisiro yekukanganiswa kwemagetsi inosiyana zvakanyanya.Mune zvimwe zviitiko, EMI ingori kutsamwisa kunokonzera kukanganisa.Nekudaro, mumashandisirwo akaomarara akadai sekurapa nemauto, matambudziko akadaro anogona kuuraya.
Pane nzira mbiri huru dzekuparadzira EMI - conduction uye radiation.Inoitwa EMI inopararira kuburikidza netambo dzakadai setambo dzemagetsi, waya, uye mitsara yemasaini.Kuvhiringika kwemagetsi kunofamba nemumhepo kubva kumidziyo yemagetsi, mota, magetsi, nharembozha uye midziyo yekuparadzira redhiyo.
EMI inoitika kana masaini eruzha akakwira-frequency anogadzirwa nemagetsi kana emagetsi switch akanganisa kushanda kwemidziyo yemagetsi.Pamidziyo inogadzira ruzha senge vatauri, izvi zvinogona kuburitsa static kana kuputika.Zvimwe zvigadzirwa zvemagetsi zvinogona kusangana nekuvhiringwa, kusashanda zvakanaka kana kukanganisa.
Kunyangwe radiation yemagetsi inogona kukanganisa kushanda kwemaseketi emagetsi, inogonawo kukonzera kuti michina itadze kutevedzera mirairo yeEMI.Kana chishandiso chikakanganiswa neredhiyo frequency kukanganiswa kana kutadza EMI kuyedzwa, sefa inodiwa kudzikamisa kukanganisa uye kuunza mudziyo mukutevedzera.
Electromagnetic Compatibility (EMC) mainjiniya anoedza kuderedza kukanganisa uye kutadza kunokonzerwa nekukanganiswa kwakaitwa uye neradiated uye kuburitswa.
Muzviitiko zvakawanda, kudzivirira kupindira ibasa rinofanira-kuona.Semuenzaniso, kana chigadzirwa chichitengeswa muEuropean Union, chinofanira kuenderana neEMC Directive 89/336/EEC, iyo inoda kuti michina ideredzwe mukuburitswa uye kuchengetedzwa kubva mukukanganiswa kwekunze.MuUS, kune zvekutengesa (FCC Zvikamu 15 uye 18) uye zviyero zvemauto zvinoda kutevedzera EMI yakafanana.
Muzviitiko zvakawanda, kunyangwe US, EU, uye yepasirese EMC mirau isingashande, michina inogona kuramba ichida EMI mafirita kuti azvidzivirire kubva munzvimbo dzine ruzha.Maitiro ekusarudza EMI sefa zvinoenderana neakati wandei dhizaini senge yazvino, voltage, frequency, nzvimbo, yekubatanidza uye inonyanya kukosha inodiwa yekuisa kurasikirwa.
Kune akawanda maapplication, zvigadzirwa zvakajairwa zvinogona kusangana nezvinodiwa dhizaini, asi kana zvigadzirwa zvakajairwa zvisingakwanisi kusangana nezvinodiwa dhizaini, dhizaini inodiwa.
Kazhinji kutaura, iyo yakaderera frequency yeruzha inoratidzwa sekukanganisa kunoitwa (nyonganiso), uye ruzha sefa inonyanya kutsamira pane inductive reactance yekoil coil kupa kudzvinyirira ruzha.Pamugumo wepamusoro weruzha rweruzha, iyo inoitiswa simba reruzha inotorwa nekupikisa kwakaenzana kweiyo choke coil uye inopfuudzwa neyakagoverwa capacitance.Panguva ino, kukanganiswa kwemwaranzi inova nzira huru yekuvhiringidza.
Kuvhiringidza kwemagetsi kunokonzera ruzha rwemhepo pazvikamu zviri pedyo uye zvinotungamirira, izvo zvinogona kukonzera dunhu rega-excitation mumamiriro ezvinhu akaoma, izvo zvinova zvinonyanya kuzivikanwa munyaya yediki uye yepamusoro-density chikamu chechikamu chechikamu.Mazhinji anti-EMI midziyo inoiswa mumaseketi seyakaderera-pass mafirita kudzvanya kana kutora kukanganiswa kweruzha.Iyo sefa yakatemwa-kure frequency fcn inogona kugadzirwa kana kusarudzwa zvichienderana neruzha frequency kudzvanywa.
Isu tinoziva kuti iyo ruzha sefa inopinzwa mudunhu seruzha mismatcher, uye basa rayo nderekukanganisa zvakanyanya ruzha pamusoro peiyo frequency yechiratidzo.Uchishandisa iyo pfungwa yekusawirirana kweruzha, basa resefa rinogona kunzwisiswa sezvizvi: kuburikidza nesefa yeruzha, ruzha runogona kuderedza ruzha rwekubuda nekuda kwekuparadzaniswa kwemagetsi (attenuation), kana kutora simba reruzha nekuda kwekuratidzwa kwakawanda, kana kuparadza. parasitic nekuda kwekuchinja kwechikamu chechiteshi.oscillation mamiriro, nokudaro kuvandudza ruzha margin wedunhu.
Isu tinofanirawo kutarisisa kune zvinotevera nyaya pakugadzira nekushandisa anti-EMI zvishandiso:
1. Chekutanga pane zvese, isu tinofanirwa kunzwisisa nharaunda yemagetsi uye kusarudza inonzwisisika frequency renji;
2. Kutarisa kana kune DC kana yakasimba AC munharaunda iyo ruzha sefa iripo, kudzivirira musimboti wechigadzirwa kubva pakuzara uye kutadza;
3. Kunyatsonzwisisa ukuru uye hunhu hweiyo impedance isati yaiswa uye mushure mekuiswa mudunhu kuti uwane kusawirirana kweruzha.Iyo impedance yekoil coil inowanzoita 30-500Ω, iyo inonyanya kukodzera kushandiswa pasi peyakaderera sosi impedance uye mutoro wekudzivirira;
4. Uyewo teerera kune inductive crosstalk pakati pekugovera capacitance uye zvikamu zviri pedyo uye waya;
5. Mukuwedzera, chenjerera kudzora kukwira kwekushisa kwechigadzirwa, kazhinji chisingapfuuri 60 ° C.
Izvo zviri pamusoro ndiyo nzira yekugadzira yesimba EMI sefa iyo DOREXS yakagovana newe nhasi, ndinovimba ichave inobatsira kwauri!
DOREXSEMI indasitiri mutungamiri
Kana iwe uchida inoshanda EMI dziviriro, DOREXS inopa yakasimba uye yakavimbika EMI mafirita kune yega application.Mafirita edu akakodzera kushandiswa kwehunyanzvi munzvimbo dzemauto uye zvekurapa, pamwe nekushandiswa kwekugara uye maindasitiri.Kune maapplication anoda mhinduro yetsika, timu yedu nyanzvi inogona kugadzira EMI sefa kuti isangane nezvako zvaunoda.
Iine makore gumi nemashanu eruzivo mukugadzirisa kukanganiswa kwemagetsi, DOREXS mugadziri akavimbika wemhando yepamusoro EMI mafirita ekurapa, echiuto, uye ekutengesa maapplication.Ese edu eEMI mafirita akagadzirwa kuti asangane neindasitiri zviyero uye kutevedzera EMC mirau.Ongorora kusarudzwa kwedu kweEMI mafirita kana tumira chikumbiro chetsika kuti uwane iyo yakakwana EMI sefa kune zvaunoda.Kuti uwane rumwe ruzivo nezveDOREXS tsika uye yakajairwa EMI mafirita, ndapota taura nesu.
Email: eric@dorexs.com
Runhare: 19915694506
Whatsapp: +86 19915694506
Webhusaiti: scdorexs.com
Nguva yekutumira: Feb-07-2023
