Mwoyo weiyo switching power supply module - switching transformer

Kuongorora kwepamusoro-frequency switching power supply transformer

Muzvigadzirwa zvemagetsi zvatinosangana nazvo zuva nezuva, tinogona kuwana nhamba huru yemagnetic corezvikamu, pakati pazvo pane mwoyo wekushandura magetsimodule - iyokushandura transformer. Mazuva ano, zvigadzirwa zvemagetsi muhupenyu zvine zvakawanda uye zvakaomesesa zvinodiwa pakuonekwa kwezvakanyanya-zvidiki uye zvakanyanya-zvakatetepa zvigadzirwa. Semwoyo wesimba rezvigadzirwa zvemagetsi izvi, iyo yakakwirira-frequency switching power supply ine zvakanakira kushanda kwepamusoro, tembiricha yakanaka uye diki diki. Naizvozvo, zvigadzirwa zvemagetsi zvakawanda zvakakwirira-frequency switching power supply. Sevashandi muindasitiri yemagetsi, iwe unofanirwa kuziva chimwe chinhu nezve shanduko yemagetsi ekuchinja.

Iyo transformer chishandiso chinoshandisa musimboti we electromagnetic induction kuchinjanisa ikozvino. Zvikamu zvaro zvikuru zvinosanganisiracoil yekutanga, yechipiri coiluyeiron core.

Mubasa remagetsi, vashanduri vanogona kazhinji kuonekwa. Iyo inonyanya kushandiswa iri mumagetsi emagetsi module sekushandura voltage uye kuzviparadzanisa nevamwe:

①: Shanduko inogona kukamurwa kuita mhando mbiri: nhanho-kumusoro uye nhanho-pasi. Mazhinji ekuchinja magetsi emagetsi ari nhanho-pasi. Zvigadzirwa zvemagetsi zvakadaro zvinowanzo shandiswa mumagetsi epadesktop, maadapter emafoni, machaja enharembozha, magetsi eTV, zvibikirwo zvemupunga, mafiriji, mabiki einduction, magetsi, nezvimwewo. Aya ndiwo mapindiro e AC anopfuura nepabhiriji rekugadziridza uye kusefa hombe kwecapacitor rectifier. kuwana high-voltage DC.

②: Kusimudzira kunowanzo shandiswa mumagetsi emagetsi emagetsi kana DC-DC mitsara, ine magetsi ekukurumidzira, uye bhatiri 12V rinoshandurwa kuita 220V kuburitsa kwemagetsi ekushandisa.

③: Kuparadzaniswa kwehigh-frequency switching transformerschinhu chekuchengetedza chinodiwa kuve nechokwadi chekuchengetedzwa kwemidziyo yemagetsi. Kana AC inopinza, switching transformer inofanirwa kunge iine chinhambwe chakachengeteka kuti uwane yekuzviparadzanisa pakati peiyo yekutanga AC yekupinza uye yechipiri magetsi. Iyo yekutanga mhepo yekushandura inoparadzaniswa neinodzivirira tepi, uye yekutanga uye yechipiri mativi e skeleton ari ega. AC inopfuura nemumuviri wemunhu uye inoita chiuno nepasi, zvichikonzera njodzi yekufambiswa kwevanhu. Kune yakakwira-voltage bvunzo pane transformer, kazhinji inoda 3KV.

Hukama huripo pakati pekutanga coil uye yechipiri coil:

Kana iyo transformer ichimhanya nemutoro, shanduko mune yechipiri coil ikozvino ichakonzera shanduko inoenderana mune yekutanga coil ikozvino. Zvinoenderana nemusimboti weiyo magineti inogoneka chiyero, inofungidzirwa kuti ikozvino yemakoiri ekutanga uye echipiri ari inversely proportional nenhamba yekutendeuka kwecoil. Ikozvino padivi ine matende akawanda idiki, uye ikozvino padivi ine mashoma anotendeuka yakakura.

Inogona kuratidzwa neinotevera formula: yekutanga coil ikozvino / yechipiri coil ikozvino = yechipiri coil inotendeuka / yekutanga coil inotendeuka.

Iyo coil zvinhu zve transformer zvinosanganisiraenameled waya, matatu-layer insulated waya, foil yemhangura,uyepepa remhangura. Enameled waya kazhinji inoshandisa multi-strand yakamonyoroka waya. Kubatsira kwewaya-yakawanda-yakamonyoroka waya ndeyekudzivirira ganda tambo yemhangura, asi yakawanda-strand yakamonyoroka waya inogona kukonzera ruzha. Tatu-layer insulated waya inoshandiswa mumashanduri asina kukwana kuchengetedzwa kure kanaskeleton dukunzvimbo, uye foil yemhangura uye pepa remhangura zvinoshandiswa mumagetsi emagetsi emagetsi.

Iyo inopeta nzira yecoil inogona kuvandudza iyo EMI yetransformer, kunyanya mune yakaderera-simba flyback magetsi emagetsi. Coil winding nekudzivirira zvakakosha kune EMI. Iko kupemha kwekoil kunokanganisa kudonha inductance uye parasitic capacitance ye transformer, uye ine chekuita pakurasikirwa kwetransformer.

 

Musiyano uripolow-frequency transformersuyehigh-frequency transformers:

① Transformer inoshanda frequency
Maererano nemaitiro akasiyana ekushanda kwe transformer, inogona kazhinji kukamurwa kuita yakaderera-frequency transformers uye yakakwirira-frequency transformers. Semuenzaniso, muhupenyu hwezuva nezuva, kuwanda kweiyo maindasitiri frequency AC ndeye 50Hz, uye isu tinodaidza iyo transformer inoshanda panguva iyi yakaderera-frequency transformer; nepo kushanda kweiyo high-frequency transformer inogona kusvika makumi eKHz kusvika kumazana eKHz. Kune ma-low-frequency transformers uye ma-high-frequency transformers ane simba rimwechete rekubuda, vhoriyamu ye-high-frequency transformer yakanyanya kuduku kudarika ye-low-frequency transformer. Iyo transformer inhengo yakakura mumagetsi emagetsi. Kuti ive nechokwadi chekubuda kwesimba paunenge uchidzikisa vhoriyamu, yakakwira-frequency transformer inofanirwa kushandiswa, saka yakakwira-frequency transformer inoshandiswa mumagetsi ekuchinja.

② Kushanda musimboti we transformer
Nheyo yekushanda ye-high-frequency transformer uye yakaderera-frequency transformer yakafanana. Ose ari maviri anoshanda pamusimboti we electromagnetic induction, asi maererano nezvigadzirwa zvekugadzira, zvinhu zvinoshandiswa kumacores avo zvakasiyana. Iyo musimboti wesimbi weiyo yakaderera-frequency transformer inowanzo gadzirwa neakawanda silicon simbi mashiti akaturikidzana, nepo simbi yepakati-yepamusoro-frequency transformer inogadzirwa neakakwira-frequency magineti zvinhu.

③ Transformer kutapurirana chiratidzo
MuDC voltage-yakagadzikana magetsi emagetsi, iyo yakaderera-frequency transformer inotamisa sine wave chiratidzo. Mumagetsi ekuchinja magetsi, iyo yakakwira-frequency transformer inotumira yakakwira-frequency pulse square wave chiratidzo.

Mabasa makuru emushanduri ndeaya: voltage conversion; impedance kutendeuka; kuiswa kwemurwere kwake ega; voltage kudzikamisa (magnetic saturation transformer), nezvimwewo. Transformers inoshandiswa munenge zvese zvigadzirwa zvemagetsi uye chikamu chakakosha. Nheyo yetransformer iri nyore. Zvinoenderana neakasiyana ekushandisa zviitiko uye akasiyana mashandisiro, iyo inotenderedza mhepo yetransformer ichavawo nezvinodiwa zvakasiyana.

 

XuanGe Electronics

15 makore ehunyanzvi emagetsi ekugadzira zvikamu