Ndi kuchulukirachulukira kwamavuto amagetsi, kutha kwa zinthu komanso kuwonongeka kwa mpweya, China yakhazikitsa magalimoto amagetsi atsopano ngati bizinesi yomwe ikubwera.Monga gawo lofunikira pamagalimoto amagetsi, ma charger amagalimoto ali ndi phindu la kafukufuku waukadaulo komanso kufunika kogwiritsa ntchito uinjiniya.CHITH.1 ikuwonetsa mawonekedwe amtundu wa charger yamagalimoto ndi kuphatikiza STAGE AC/DC ndi siteji yakumbuyo DC/DC.
Chojambulira chagalimoto chikalumikizidwa ndi gridi yamagetsi, imatulutsa ma harmonics ena, kuyipitsa gridi yamagetsi, ndikukhudza kukhazikika kwa zida zamagetsi.Pofuna kuchepetsa kuchuluka kwa ma harmonics, bungwe la International Electrotechnical Commission linapanga muyezo wa Harmonic limit standard iec61000-3-2 pazida zamagetsi, ndipo China idaperekanso NATIONAL standard GB/T17625.Kuti zitsatire zomwe zili pamwambapa, ma charger omwe ali pa board ayenera kuwongolera mphamvu yamagetsi (PFC).PFC AC/DC converter imapereka mphamvu ku dongosolo lakumbuyo la DC/DC mbali imodzi, ndi magetsi othandizira mbali inayo.Mapangidwe a PFC AC/DC converter amakhudza mwachindunji magwiridwe antchito a charger yamagalimoto.
Poganizira kuchuluka kwa ma charger amagetsi amagetsi amafunikira zovuta, kapangidwe kake kamagwiritsa ntchito ukadaulo wa Active Power factor correction (APFC).APFC ili ndi ma topology osiyanasiyana.The Boost topology ili ndi ubwino woyendetsa galimoto yosavuta, mtengo wapamwamba wa PF ndi chipangizo chapadera chowongolera, kotero kuti dera lalikulu la Boost topology limasankhidwa.Poganizira njira zingapo zowongolera zoyambira, njira yanthawi zonse yowongolera yomwe ili ndi zabwino zosokoneza pang'ono za harmonic, kusamva phokoso komanso ma frequency osinthika amasankhidwa.
Nkhaniyi poganizira mphamvu ya 2 kW zonse magetsi galimoto naupereka, poganizira zili harmonic, voliyumu ndi odana jamming ntchito kamangidwe amafuna, chinsinsi kafukufuku PFC AC/DC converter, lili dongosolo dera lalikulu ndi kulamulira dera kamangidwe, ndi pamaziko a phunzirolo, mu phunziro la kayeseleledwe kachitidwe ndi mayesero oyesera amatsimikizira
2 PFC AC/DC converter main circuit design
Dera lalikulu la chosinthira cha PFC AC/DC limapangidwa ndi capacitor yotulutsa, chosinthira chosinthira, inductor yolimbikitsa ndi zida zina, ndipo magawo ake adapangidwa motere.
2.1 Mphamvu zosefera zotulutsa
Zotulutsa zosefera capacitor zimatha kusefa ma voliyumu omwe amatuluka chifukwa cha kusinthana ndikusunga voteji yotulutsa mumtundu wina.Chipangizo chosankhidwa chiyenera kuzindikira bwino ntchito ziwiri zomwe zili pamwambazi.
Dongosolo lowongolera limatengera mawonekedwe otsekeka awiri: kuzungulira kwakunja ndi kuzungulira kwamagetsi ndipo kuzungulira kwamkati ndi kuzungulira kwaposachedwa.Lupu lapano limawongolera zomwe zikuchitika pagawo lalikulu ndikutsata zomwe zikulozera kuti zikwaniritse kukonza kwamphamvu.Mphamvu yotulutsa mphamvu ya voliyumu loop ndi voliyumu yowonetsa zotulutsa zimafaniziridwa ndi amplifier yolakwika.Chizindikiro chotulutsa, voteji ya feedforward ndi voliyumu yolowera zimawerengedwa ndi ochulukitsa kuti apeze zomwe zikulozera za loop yapano.Mwa kusintha kuzungulira kwaposachedwa, chizindikiro choyendetsa cha chubu chachikulu chosinthira dera chimapangidwa kuti chikwaniritse mphamvu yowongolera dongosolo ndikutulutsa voliyumu yokhazikika ya DC.Chochulutsacho chimagwiritsidwa ntchito makamaka pakuchulutsa chizindikiro.Apa, pepala ili likuyang'ana pa mapangidwe a loop yamagetsi ndi loop yapano.
Nthawi yotumiza: Jun-20-2022