Parizvino, kune akawanda marudzi eDC/DC anoshandura pamusika, resonant converter imhando yeDC/DC converter topology, nekudzora ma frequency ekuchinja kuti uwane inogara ichibuda voltage resonance circuit.Resonant converters anowanzo shandiswa mune yakakwira voltage application kune yakatsetseka waveform, kuvandudza simba chinhu, uye kuderedza kurasikirwa kwekuchinja kunokonzerwa neakakwira frequency simba switch senge MOSFETs uye IGBTs.Izvo zvakakosha kuti uzive kuti iyo LLC dunhu rinowanzo shandiswa mune resonant converter nekuti inogonesa zero voltage switching (ZVS) uye zero ikozvino switching (ZCS) muchikamu chekushanda, inotsigira yakakwirira switching frequency, inoderedza tsoka yezvikamu, uye inoderedza electromagnetic. kukanganisa (EMI).
Schematic diagram ye resonant converter
A resonant converter yakavakirwa pane resonant inverter inoshandisa network ye switch kuti ichinje iyo DC yekuisa voltage kuita square wave, iyo inozoiswa kune resonant wedunhu.Sezvinoratidzwa muMufananidzo 2, resonant circuit ine resonant capacitor Cr, resonant inductor Lr uye magnetizing inductor Lm ye transformer munhevedzano.Iyo LLC yedunhu inosefa chero yakakwira-yakarongeka maharmonics nekusarudza kutora simba rakakura pane yakagadziriswa square wave resonant frequency uye kuburitsa sinusoidal voltage kuburikidza nemagineti resonance.Iyi AC waveform inokwidziridzwa kana kuderedzwa neshanduko, inogadziriswa, uye yobva yasefa kuti ibudise yakashandurwa DC inobuda voltage.
Simplified LLC resonant DC/DC converter
Mudzi unoreva square (RMS) ikozvino ye capacitor ndeimwe yeakakosha paramita inofanirwa kutariswa pakusarudza yakakodzera resonant capacitor Cr yeDC / DC inoshandura.Inobata kuvimbika kwecapacitor, voltage ripple, uye kuita kwese kweshanduko (zvinoenderana netopology yedunhu resonant).Kupisa kupisa kunokanganiswawo neRMS ikozvino uye kumwe kurasikirwa kwemukati.
Polypropylene firimu dielectric
PCB inotakurika
Yakaderera ESR, Yakaderera ESL
High frequency
Nguva yekutumira: Sep-15-2023