Mokhoa oa ho sebelisa Resonant DC/DC Converter?

Hona joale, ho na le mefuta e mengata ea li-converter tsa DC / DC 'marakeng, resonant converter ke mofuta oa DC / DC converter topology, ka ho laola maqhubu a ho fetola ho finyella potoloho e sa khaotseng ea motlakase oa resonance.Li-converter tsa resonant li sebelisoa hangata lits'ebetsong tsa motlakase o phahameng ho etsa li-waveform tse boreleli, ho ntlafatsa matla a motlakase, le ho fokotsa tahlehelo ea switching e bakiloeng ke li-switches tsa motlakase tse phahameng joalo ka li-MOSFET le li-IGBT.Ho bohlokoa ho hlokomela hore potoloho ea LLC hangata e sebelisoa ho li-converter tsa resonant hobane e nolofalletsa zero voltage switching (ZVS) le zero current switching (ZCS) lethathamong la ts'ebetso, e ts'ehetsa maqhubu a holimo, e fokotsa sebaka sa likarolo, hape e fokotsa matla a motlakase. tšitiso (EMI).

Setšoantšo sa schematic sa converter ea resonant

Mofetoleli oa resonant o hahiloe holim'a inverter ea resonant e sebelisang marang-rang a li-switches ho fetola motlakase oa motlakase oa DC hore e be leqhubu la lisekoere, ebe le sebelisoa ho potoloho e resonant.Joalokaha ho bontšitsoe setšoantšong sa 2, potoloho ea resonant e na le resonant capacitor Cr, resonant inductor Lr le magnetizing inductor Lm ea transformer ka letoto.Potoloho ea LLC e sefa li-harmonics tse maemong a holimo ka ho khetha ka ho khetha matla a phahameng ka ho fetesisa maqhubu a resonant a square wave le ho lokolla voltage ea sinusoidal ka resonance ea makenete.Mofuta ona oa maqhubu a AC oa holisoa kapa oa fokotsoa ke sefetoleli, oa lokisoa, ebe oa tlhotloa ho hlahisa motlakase o tsoang ho DC.

Nolofalitsoe LLC resonant DC/DC converter

The root mean square (RMS) hona joale ea capacitor ke e 'ngoe ea litekanyetso tsa bohlokoa tse lokelang ho nahanoa ha u khetha mochine o loketseng oa resonant capacitor Cr bakeng sa converter ea DC / DC.E ama ho ts'epahala ha capacitor, ripple ea voltage, le ts'ebetso e akaretsang ea converter (ho ipapisitse le topology ea potoloho ea resonant).Ho senya mocheso ho boetse ho angoa ke tahlehelo ea hona joale ea RMS le tse ling tse ka hare.