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      Kuchinja simbazvekushandisa zvinoshandiswa zvakanyanya mukugadzira uye hupenyu, uye chinhu chakakosha chemagetsi chigadzirwa dhizaini.Iyo yekuchinja magetsi idiki, yakareruka uye inoshanda, asi iwe unofanirwa kunyatso hunyanzvi hwekuchinja magetsi?Ichi chinyorwa chinotsanangura zvinoreva kushandura magetsi uye musimboti wekuchinja magetsi mune zvakadzama kukubatsira iwe zvirinani tenzi kushandura magetsi.
Kutanga, chii chinonzi switching power supply.
Kuchinja kwesimba rekushandisa ndiko kushandiswa kwekuchinja kwezvinhu zvinhu (senge erekitironi machubhu, munda mhedzisiro transistors, thyristor thyristors, nezvimwewo), zvinoenderana neiyo control loop, iyo switching element inogara yakabatana nekudzimwa.
Iko kushandiswa kwemagetsi kunoenderana nemagetsi emagetsi.Yake plug-in terminal inobva yashandura iyo AC rectifier kuita DC magetsi, uyezve, pasi pekuita kweyepamusoro-frequency resonant wedunhu, inoshandisa switch yemagetsi kushandura mafambisirwo emagetsi eAC kugadzira yakakwira-frequency surge ikozvino. .Nekubatsirwa kweinductor (transformer coil), yakatsetseka yakaderera-voltage DC magetsi inobuda.Nekuti iyo yakakosha kutsanangurwa kweiyo transformer inopesana neiyo square mita yesimba rinobuda, iyo yakakwira frequency, idiki iyo transformer core.Izvi zvinogona kuderedza zvakanyanya transformer uye kurerutsa huremu hwese uye huwandu hwemagetsi ekupa.Uye, nekuti inokurumidza kushandura DC, iyi mhando yemagetsi inoshanda zvakanyanya kupfuura mutsara magetsi emagetsi.Izvi zvinoponesa simba remagetsi uye naizvozvo zvinofarirwa zvikuru nesu.Asi hainawo kukanganisa.Iyo switching power supply circuit yakaoma, kugadzirisa kwakaoma, uye kusvibiswa kwezvakatipoteredza kwemagetsi emagetsi kunenge kwakakomba.Simba remagetsi rine ruzha, uye hazvina kugadzikana kushandisa mamwe magetsi emagetsi mashoma.
Iyo mutsara magetsi emagetsi anotanga adzikisira amplitude ye AC voltage zvinoenderana neshanduko, yobva yawana imwechete-pulse DC magetsi zvinoenderana nebhiriji rectifier rectifier rectifier, wozowana DC voltage ine diki ripple voltage zvinoenderana nekusefa.Kuti uite zvirinani kuwana yakakwirira-chaiyo DC voltage, zvinodikanwa kugadzira Zener chubhu zvinoenderana neyakagadziriswa magetsi emagetsi.
Chechipiri, nheyo yekushandura magetsi.
Iyo yese nzira yekushanda kweiyo switching simba rekupa iri nyore kunzwisisa.Mune mutsara wemagetsi emagetsi, ita kuti inobuda simba chubhu network ishande.Kusiyana nemagetsi emagetsi emagetsi, PWM inochinja magetsi inochengeta machubhu emagetsi ekubuda akabatidzwa nekudzima.Muzviitiko zviviri zviri pano, iyo volt-ampere kuwedzeredza yakawedzerwa pane inobuda simba chubhu idiki kwazvo (voltage yakadzikira uye iripo yakakura kana yakadzimwa; voltage yakakwira uye ikozvino idiki kana yakadzimwa. ) / volt-ampere pane simba remagetsi mudziyo Kuwanda kwehunhu hwemacurves ndiko kukanganisa pane inobuda simba semiconductor zvikamu.
Kuenzaniswa nemagetsi emagetsi emagetsi, iyo inonzwisisika inoshanda yekubatanidza yePWM yekuchinjisa magetsi inopedzwa zvinoenderana neiyo inverter, uye iyo DC voltage yekuiswa inochekwa kuita imwechete pulse voltage ine amplitude kukosha yakaenzana neiyo yekuisa voltage amplitude kukosha. .
Chechitatu, zvakanakira uye kuipa kwekuchinja magetsi magetsi:
Iwo chaiwo mabhenefiti ekuchinja magetsi emagetsi: saizi diki, huremu huremu (vhoriyamu uye huremu huremu hunongova 20 ~ 30% yemagetsi emagetsi), kushanda kwakanyanya (kazhinji 60 ~ 70%, nepo linear magetsi ari 30 ~ 40% chete). , Anti- Kwakasimba kupindira kugona, yakafara kubuda voltage yekuvhara, modular dhizaini.
Izvo zvakakanganisika zvemagetsi ekuchinja: nekuti rectifier redunhu rinokonzeresa yakakwira-frequency voltage, ine imwe mhedzisiro pane yakatenderedza zvivakwa.Kudzivirira kwakanaka uye pasi kunofanira kuchengetedzwa.
Iyo AC yazvino inogona kupfuura nepainogadzirisa kuti iwane iyo DC simba.Sekuziva kwemunhu wese, nekuda kwekuchinja kweiyo AC voltage uye kurema kwazvino, iyo DC voltage inowanikwa mushure mekugadzirisa kazhinji inokonzeresa shanduko yemagetsi ye20% kusvika 40%.Kuti uwane iri nani yakagadzikana DC voltage, iva nechokwadi chekushandisa inodzorwa magetsi emagetsi kupedzisa zener chubhu.Zvinoenderana neakasiyana nzira dzekupedzisa, iyo voltage regulator chubhu magetsi emagetsi anogona kukamurwa kuita mhando nhatu: linear voltage regulator chubhu magetsi emagetsi, chikamu-inodzorwa voltage regulator magetsi uye switching regulator chubhu magetsi.Kuchinja kwemagetsi kunoreva maitiro ekusimudzira egirinhi kuchengetedza kwezvakatipoteredza uye yakanakisa magetsi ekupa.
Chechina, matambudziko akajairika pakusarudza switching power supply.
(1) Sarudza iyo yakakodzera yekuisa voltage yekutsanangura modhi;
(2) Sarudza iyo yakakodzera kubuda simba.Kuti uwedzere zvirinani hupenyu hwemagetsi, unogona kusarudza modhi ine yakayerwa simba rinopfuura 30%.
(3) Tichifunga nezvekutakura zvinhu.Kana mutoro wacho uri motokari, girobhu rechiedza kana capacitor mutoro, uye ikozvino yakakura panguva yekushanda, magetsi akakodzera anofanira kusarudzwa kudzivirira mutoro.Kana mutoro uri mota, kudzoserwa kwemagetsi pakuvhara kunofanirwa kutariswa.
(4) Pamusoro pezvo, tembiricha yekushandisa yemagetsi uye kana iine yakawandisa yekubatsira kutonhora michina inofanirwa kutariswa.Yakawandisa tembiricha inonzwa magetsi emagetsi anofanira kudzikisa kubuda.Tembiricha kuderedza simba curve.
(5) Mabasa akasiyana-siyana anofanira kusarudzwa maererano nekushandiswa:
Maintenance mabasa: Pamusoro peVoltage Dziviriro (OVP), Temperature Dziviriro (OTP), Pamusoro peVoltage Dziviriro (OLP), nezvimwe.
Zvishandiso zvekushandisa: data chiratidzo chebasa (yakajairika simba rekugovera, simba risiri iro), remoti rekudzora basa, basa rekutarisa, parallel yekubatanidza basa, nezvimwe.
Zvakasiyana Zvimiro: Simba Factor Correction (PFC), Inoenderera Simba (UPS)
Sarudza zvinodiwa zvekuchengetedza uye EMC performance (EMC) yekuongorora