Ungasifaka kanjani isicelo se-Resonant DC/DC Converter?

Njengamanje, kunezinhlobo eziningi zeziguquli ze-DC/DC emakethe, isiguquli se-resonant siwuhlobo lwe-DC/DC converter topology, ngokulawula imvamisa yokushintsha ukuze kuzuzwe isekethe ye-voltage resonance ephuma njalo.Iziguquli eziguquguqukayo zivame ukusetshenziswa ezinhlelweni zamandla kagesi aphezulu ukuze bushelelezi amagagasi, kuthuthukiswe isici samandla, futhi kunciphise ukulahleka kokushintsha okubangelwa ukushintsha kwamandla okuvama okuphezulu njengama-MOSFET nama-IGBT.Kubalulekile ukuqaphela ukuthi umjikelezo we-LLC uvame ukusetshenziswa kuma-resonant converters ngoba wenza i-zero voltage switching (ZVS) kanye ne-zero current switching (ZCS) ebangeni lokusebenza, isekela amaza okushintsha aphezulu, inciphisa indawo yezingxenye, futhi yehlisa amandla kazibuthe. ukuphazamiseka (EMI).

Umdwebo wohlelo lwesiguquli se-resonant

Isiguquli se-resonant sakhiwe phezu kwe-resonant inverter esebenzisa inethiwekhi yokushintsha ukuguqula i-voltage yokufaka ye-DC ibe igagasi lesikwele, elibese lisetshenziswa kumjikelezo ozwakalayo.Njengoba kuboniswe kuMfanekiso 2, isifunda esine-resonant siqukethe i-resonant capacitor Cr, i-resonant inductor Lr kanye ne-magnetizing inductor Lm ye-transformer ochungechungeni.Isekethe ye-LLC ihlunga noma yimaphi ama-harmonics e-oda eliphezulu ngokukhetha ngokukhetha amandla amakhulu kufrikhwensi ye-resonant yesikwele esimisiwe futhi ikhulule i-voltage ye-sinusoidal ngokusebenzisa i-resonance kazibuthe.Le waveform ye-AC iyakhuliswa noma yehliswe yi-transformer, ilungiswe, bese ihlungwa ukuze ikhiqize i-voltage ephumayo ye-DC eguquliwe.

I-Simplified LLC resonant converter ye-DC/DC

Impande yesilinganiso sesikwele (i-RMS) samanje se-capacitor ingenye yemingcele ebalulekile okufanele icatshangelwe lapho kukhethwa i-resonant capacitor Cr efanelekile yesiguquli se-DC/DC.Kuthinta ukuthembeka kwe-capacitor, ripple voltage, kanye nokusebenza kukonke kwesiguquli (kuye ngokuthi i-topology yesekethe ezwakalayo).Ukukhishwa kokushisa nakho kuthinteka ukulahlekelwa kwamanje kwe-RMS nokunye kwangaphakathi.