Kodi Charging Mechan of Charger ndi Chiyani?
Njira Yolipirira Ma Charger
Gawoli likuwonetsa mfundo yolipiritsa ma charger popereka padera zitsanzo zamapangidwe amtundu wa machaja omwe amangoyang'ana patali komanso pawiri.
Unidirectional Charging Topology
Chaja chimazindikira kutembenuka pakati pa AC ndi DC kudzera pazida zamagetsi zamagetsi. Mosapeŵeka, zida zamagetsi zamagetsi zimabweretsa mphamvu yogwira ntchito, ndipo mphamvu zochulukirapo zitha kubweretsa kusinthasintha kwamagetsi amagetsi, kuchepa kwamagetsi, komanso kutayika kwa mizere. Chiŵerengero cha mphamvu yogwira ntchito ku mphamvu yowonekera mu dera imatanthauzidwa ngati mphamvu yamagetsi. Pofuna kupondereza mphamvu zochulukira zomwe zimaperekedwa ndi womaliza-wogwiritsa ntchito ku gridi yamagetsi, zoletsa zoletsa magetsi zimayikidwa pakugwiritsa ntchito magetsi mnyumba ndi m'mafakitale, nthawi zambiri osachepera 0.8~0.9. Imodzi mwa njira zomwe zimagwiritsidwa ntchito ndi teknoloji ya PFC (Power Factor Correction), yomwe imatha kuthetsa kuipitsidwa kwa harmonic kuchokera ku zipangizo zamagetsi zamagetsi ndikuwongolera mphamvu zowonjezera.
Tekinoloje ya single-stage full-bridge PFC ili ndi ubwino wake monga masanjidwe osavuta, ochita bwino kwambiri, komanso -ma frequency transfoma omwe ali ndi-zosangalatsa zowirikiza kawiri, kupangitsa kuti ikhale yoyenera{4}}kugwiritsa ntchito magetsi ambiri. Chosinthira-siteji imodzi yodzaza-mlatho wa PFC potengera-mlatho wathunthu chikuwonetsedwa pa Chithunzi 11-21. Imagwira ntchito m'magawo awiri:kumtunda ndi kumunsi kwa mkonondikutsutsana ndi mkono conduction. Panthawi yoyendetsa kumtunda ndi kumunsi kwa mkono, mphamvu ya inductors ikukwera. Pakayendetsedwe ka mkono kosiyana, mphamvu ya inductor yolowera imagwa. Dongosolo lowongolera limasintha chiŵerengero (ntchito yozungulira) ya nthawi ya kumtunda ndi yotsika ya nthawi yoyendetsa mkono mkati mwa kuzungulira ndi kutulutsa kwa cholowetsa cholowetsamo kuti asinthe kukula kwa zomwe zilipo panopa mu inductor yolowera, kupanga zomwe zilipo panopa kukhala sine wave mu gawo ndi magetsi olowera. Izi pamapeto pake zimathetsa-mawu omveka bwino komanso owongolera mphamvu.
Kuyang'ana kayendedwe ka mphamvu, zitha kuwoneka kuti panthawi ya kumtunda ndi kumunsi kwa mkono, voteji pamtunda wapamwamba-ma frequency transformer ndi 0, ndipo capacitor ya sefa yotulutsa imapereka mphamvu ku katunduyo; Pamene mkono umadukizana, chosinthira{2}}chapamwamba kwambiri chimasamutsa mphamvu zosungidwa mu inductor yolowetsa ndikuzipereka.
Mphamvu yochokera ku chingwe cholowetsa imasamutsidwa ku mbali yachiwiri ya transformer. Pambuyo pa-kuwongolera pafupipafupi ndi kusefa, kumapereka mphamvu pakulemetsa. Pakuwongolera kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe kake kake Mkati mwa kayendetsedwe ka ntchito kamodzi, cholowetsa cholowetsa chimamaliza kuzungulira kuwiri kochajitsa ndi kutulutsa, ndipo chosinthira chapamwamba-chimasangalala kawiri, mbali ziwiri zosangalalira zimakhala zosiyana. Izi zimagwiritsa ntchito mphamvu ya maginito pokankha-njira yokoka, kupititsa patsogolo kagwiritsidwe ntchito ka maginito a transformer.
Bidirectional Charging Topology
Chithunzi cha 11-22 chikuwonetsa mawonekedwe a dera lalikulu potchaja ndi kutulutsa ma charger a bidirectional, omwe ali ndi -phase half-bridge voltage-source PWM rectifier ndi bidirectional DC/DC converter.
Magetsi-magawo atatu a AC amagwiritsidwa ntchito kwambiri m'mafakitale-amagetsi okwera kwambiri-ndi magetsi okwera kwambiri. Bidirectional imatanthawuza kuti kuyenda kwa mphamvu kungakhale kuchokera kumbali ya gululi kupita ku batri ya galimoto, kapena kuchokera kumbali ya batri kupita ku gululi. -theka la magawo atatu-voltage ya bridge{7}}source PWM rectifier mu chithunzi ndi mtundu wa bidirectional PWM rectifier, umene uli ndi ubwino monga kupeza mayendedwe amphamvu, kuyankha mwachangu, ndi kuchita bwino kosasunthika{8}}. Pamene ili mukukonzanso boma, mphamvu imachokera kumbali ya gululi, panopa ndi sinusoidal, ndipo gawo lake ndi lofanana ndi magetsi a grid; pamene ikugwira ntchito muyogwira inversion state, mphamvu zomwe zimasungidwa mu batire yagalimoto yamagetsi zimabwereranso ku gridi yamagetsi, ndipo grid-mawimbi akumbali apano ndi apano onse ndi sinusoidal, ndi kusiyana kwa digrii 180 .
Chosinthira cha bidirectional DC/DC chili ndi maubwino monga kuyankha mwachangu, kusinthika kwamphamvu kwambiri, ndi zida zochepa zamagetsi. Monga momwe tawonetsera pa Chithunzi 11-22, pomwe chojambulira chikulipiritsa batire yagalimoto yamagetsi, sinthani.S1ikuchita, pamene kusinthaS2imakhala yozimitsa nthawi zonse. Choncho, chowongolera cha bidirectional PWM chimagwira ntchito pokonzanso, ndipo chosinthira cha bidirectional DC/DC chili pa sitepe-yotsika mtengo, ndipo mphamvu zimayenda kuchokera kumbali ya grid kupita ku mbali ya batire; pamene batire ikutha, sinthaniS2yazimitsa, switchS1ikuchitika, chosinthira cha bidirectional cha DC/DC chili pa sitepe-yokwera kwambiri, ndipo chowongolera cha PWM cha bidirectional chimagwira ntchito m'malo mwake, ndipo mphamvu zosungidwa mu batire zimabwezeretsedwa ku gridi yamagetsi kudzera pa chowongolera.
