Ungasifaka njani iResonant DC/DC Converter?

Okwangoku, kukho iintlobo ezininzi ze-DC/DC converters kwimarike, i-resonant converter luhlobo lwe-DC/DC converter topology, ngokulawula ukutshintshwa kwe-frequency ukufezekisa i-voltage ye-voltage resonance circuit.Iziguquli zeResonant ziqhele ukusetyenziswa kusetyenziso lwamandla ombane aphezulu ukugudisa amaza, ukuphucula amandla, kunye nokunciphisa ilahleko yokutshintsha okubangelwa zizitshixo zamandla aphezulu anjenge-MOSFETs kunye nee-IGBTs.Kubalulekile ukuqaphela ukuba isekethe ye-LLC idla ngokusetyenziswa kwiziguquli ze-resonant kuba yenza ukuba i-zero voltage switching (ZVS) kunye ne-zero yangoku yokutshintsha (i-ZCS) kuluhlu lokusebenza, ixhasa amaza okutshintsha okuphezulu, inciphisa unyawo lwamacandelo, kwaye inciphisa i-electromagnetic. ukuphazamiseka (EMI).

Umzobo weSchematic we-resonant converter

Umguquli we-resonant wakhiwe kwi-resonant inverter esebenzisa inethiwekhi yokutshintsha ukuguqula i-voltage yegalelo ye-DC ibe yi-square wave, ethi ke isetyenziswe kwi-resonant circuit.Njengoko kuboniswe kwi-Figure 2, i-resonant circuit iqulethe i-resonant capacitor Cr, i-resonant inductor Lr kunye ne-magnetizing inductor Lm ye-transformer kwi-series.Isekethe ye-LLC ihluza naziphi na ii-harmonics zodidi oluphezulu ngokukhetha ngokukhetha awona mandla aphezulu kwi-square wave wave frequency resonant frequency kunye nokukhulula i-voltage ye-sinusoidal ngokusebenzisa i-resonance magnetic.Le waveform ye-AC iyandiswa okanye icuthwe sisiguquli, ilungiswe, emva koko ihluzwe ukuvelisa amandla ombane wokuphuma kwe-DC.

I-Simplified LLC resonant DC/DC converter

Ingcambu ye-square (RMS) yangoku ye-capacitor yenye yeeparameters ezibalulekileyo eziza kuqwalaselwa xa ukhetha i-resonant capacitor Cr efanelekileyo ye-DC / DC converter.Ichaphazela ukuthembeka kwe-capacitor, i-voltage ripple, kunye nokusebenza ngokubanzi komguquli (kuxhomekeke kwi-topology ye-resonant circuit).Ukutshatyalaliswa kobushushu kukwachatshazelwa yi-RMS yangoku kunye nezinye iilahleko zangaphakathi.