Ka ho mpefala ha koluoa ea matla, ho felloa ke matla ha lisebelisoa le tšilafalo ea moea, China e thehile likoloi tse ncha tsa matla e le indasteri e ntseng e tsoela pele ea maano.E le karolo ea bohlokoa ea likoloi tsa motlakase, lishaja tsa likoloi li na le boleng ba lipatlisiso tsa theory le boleng ba kopo ea boenjiniere ea bohlokoa.FEIE.1 e bonts'a setšoantšo sa block block sa tjhaja ea koloi e kopantsoeng le STAGE AC/DC e ka pele le DC/DC e ka morao.
Ha mochine oa koloi o kopantsoe le marang-rang a matla, o tla hlahisa li-harmonics tse itseng, a silafatse marang-rang a matla, 'me a ama botsitso ba lisebelisoa tsa motlakase.E le ho fokotsa palo ea li-harmonics, Komisi ea Machaba ea Electrotechnical e ntlafalitse moeli oa moeli oa harmonic iec61000-3-2 bakeng sa lisebelisoa tsa motlakase, 'me Chaena e boetse e fane ka NATIONAL standard GB/T17625.E le ho ikamahanya le litekanyetso tse ka holimo, li- charger tse ka holim'a board li tlameha ho lokisoa ka matla (PFC).PFC AC/DC converter e fana ka matla tsamaisong e ka morao ea DC/DC ka lehlakoreng le leng, le phepelo ea motlakase e thusang ka lehlakoreng le leng.Moralo oa converter ea PFC AC/DC e ama ka kotloloho ts'ebetso ea tjhaja ea koloi.
Ka lebaka la bophahamo le li-harmonics tsa li-charger tse hloekileng tsa likoloi tsa motlakase li na le litlhoko tse boima, moralo ona o sebelisa theknoloji e sebetsang ea matla a ho lokisa (APFC).APFC e na le mefuta e fapaneng ea li-topology.The Boost topology e na le melemo ea potoloho e bonolo ea ho khanna, boleng bo phahameng ba PF le chip e khethehileng ea taolo, kahoo potoloho e kholo ea Boost topology e khethoa.Ha ho nahanoa ka mekhoa e fapaneng ea taolo ea mantlha, mokhoa o tloaelehileng oa taolo ea hajoale o nang le melemo ea ho sotha ha harmonic e tlase, ho hloka kutlo ho lerata le maqhubu a feto-fetohang a khethiloe.
Sengoliloeng sena ka lebaka la matla a tjhaja ea koloi ea motlakase ea 2 kW kaofela, ha ho nahanoa ka litaba tsa harmonic, molumo le litlhoko tsa moralo oa ts'ebetso ea anti-jamming, lipatlisiso tsa bohlokoa tsa PFC AC / DC converter, e na le sebopeho sa potoloho le taolo ea potoloho, le motheong oa thuto, thutong ea ketsiso ea tsamaiso le liteko tsa liteko netefatsa
2 PFC AC / DC e fetolelang moralo o ka sehloohong oa potoloho
Potoloho e ka sehloohong ea converter ea PFC AC/DC e entsoe ka capacitor ea sehlahisoa, sesebelisoa sa switching, boost inductor le likarolo tse ling, 'me liparamente tsa eona li entsoe ka tsela e latelang.
2.1 Bokhoni ba filtara ea tlhahiso
Sefahla sa capacitor se ka sefang phallo ea motlakase e hlahisoang ke ketso ea ho chencha le ho boloka motlakase o tsoang maemong a itseng.Sesebelisoa se khethiloeng se lokela ho hlokomela hantle mesebetsi e 'meli e ka holimo.
Potoloho ea taolo e nka sebopeho se koetsoeng habeli: loop e ka ntle ke loop ea voltage mme loop e ka hare ke loop ea hajoale.Loop ea hona joale e laola motlakase oa motlakase oa potoloho e kholo 'me e latela morao-rao ea litšupiso ho finyella tokiso ea matla.Matla a tsoang a loop ea voltage le voltage ea referense ea tlhahiso li bapisoa le amplifier ea phoso ea voltage.Letšoao la tlhahiso, motlakase oa phepelo ea motlakase le motlakase oa ho kenya li baloa ke morekisi ho fumana ts'ebeliso ea hona joale ea loop ea hajoale.Ka ho lokisa loop ea hona joale, lets'oao la ho khanna la mochini o ka sehloohong oa potoloho le hlahisoa ho fihlela tokiso ea matla a sistimi le ho hlahisa motlakase o tsitsitseng oa DC.Mohatisi e sebelisoa haholo-holo bakeng sa katiso ea matšoao.Mona, pampiri ena e shebane le moralo oa loop ea voltage le loop ea hajoale.
Nako ea poso: Jun-20-2022