ukuchithwa kwesithando somlilo umgaqo wokusebenza – i-resonance efanayo

unikezelo lwamandla rhoqo

Ukunikezelwa kwamandla kwi-furnace yokunyibilika kwe-induction ithatha i-resonance ehambelanayo amandla amaza aphakathi unikezelo, esesona sicelo sokuqala sobonelelo lwamandla ombane ophakathi eTshayina. Sisixhobo soguqulo lwamaza ombane esiguqula amandla ombane amanqanaba amathathu e-AC amandla ombane akwisigaba esinye esiphakathi. Inzuzo yayo kukuba inomthwalo oqinileyo wokuguquguquka kwaye inokusetyenziswa njengonikezelo lwamandla ukuchithwa kwesithando somlilo .

Umfanekiso we-2-1 ubonisa umzobo womgaqo wesekethe ehambelanayo ye-parallel resonant intermediate frequency frequency power supply, equlunqwe ngokukodwa i-switch switch (DK), i-AC contactor (okanye i-electric circuit breaker KM), i-inductance yomgca ongenayo (L1 ~ L3) , kunye ne-coupler ekhawulezayo ( FU ), i-rectifier (VT1 ~ VT6), i-reactor smoothing (LF), i-inverter (VT7 ~ VT10), i-parallel resonant load (L, C) . Isilungisi siguqula amandla ombane amanqanaba amathathu atshintshatshintshayo abe ngumsinga othe ngqo; i-reactor egudileyo isetyenziselwa ukuhluza i-ripple yangoku elungisiweyo kunye nokwahlula i-ripple voltages ezahlukeneyo phakathi kwesilungisi kunye nesiguquli; i-inverter iguqula i-current ngqo ibe yi-single-phase intermediate frequency Alternating current; umthwalo we-resonant ohambelanayo owenziwe yi-inductor kunye ne-capacitor yembuyekezo unokulungelelanisa ngakumbi ukutshintshwa kweempawu zomthwalo ngexesha lokufudumala.

Umfanekiso 2-1 Parallel resonance intermediate frequency supply main circuit

( 1) Isigaba esithathu sebhulorho-uhlobo-elawulwa ngokupheleleyo isekethe yomlungisi Isekethe yesilungisi se-parallel resonant intermediate frequency supply yamkela isigaba sesithathu sebhulorho-uhlobo-elawulwa ngokupheleleyo sesekethe yokubuyisela. Umgaqo uboniswe kuMfanekiso 2-2. Ekubeni i-reactor ye-smooth (LF) ine-inductance enkulu kwaye umthwalo ngumthwalo owenziweyo, ukukhutshwa kwangoku komthwalo ngu-rectifier ngokuqhubekayo kunye nomgca ochanekileyo. Xa i-aW60 °, i-wave wave form ye-rectifier circuit iyafana naleyo yomthwalo ochasayo, kwaye umthetho wokuqhuba uyafana nowomthwalo ochasayo. Xa a> 60 ° , ngenxa yempembelelo ye-inductor LF , i-thyristor iya kuphinda ivulwe emva kokuba amandla ombane ombane awela i-zero, de i-thyristor elandelayo iqhutywe ukuba ivule, ukuze kuvele indawo engathandekiyo kwi-waveform ivoltage ephumayo yokubuyisela, kodwa imveliso yangoku ikwinqanaba elinye

Ucingo. Xa i-angle yokulawula inyuka ukuya kwi-90. Xa iindawo ezintle kunye nezingalunganga kwi-voltage waveform waveform zilingana, ixabiso eliphakathi kwe-voltage output Ud = 0. Xa i> 90 ° , isekethe yokubuyisela isebenza kwimeko yokusebenza ye-inverter esebenzayo. Uluhlu lokutshintsha kwesigaba sesekethe yokubuyisela unikezelo lwamandla ombane ophakathi ngu-0 ° ~ 150 °.

( 2) Isekethe ye-Inverter Umzobo we-2-3 ngumzobo oqingqiweyo wesekethe ye-inverter ehambelanayo. I-capacitor C kwisiphaluka somthwalo idibene ngokuhambelana ne-inductor coil L, kwaye ukutshintshwa kusekelwe kumgaqo we-resonance parallel resonance, ngoko kuthiwa yi-parallel resonance inverter circuit. Umbane we-DC u-Ud obonelelwa yi-thyristor-elawulwa ngokupheleleyo isekethe yokubuyisela ilungelelaniswa ngokuqhubekayo, kwaye i-parallel inverter circuit iguqula amandla e-DC ibe yi-intermediate ephakathi yobonelelo lwamandla e-AC kumthwalo. Umtya wecala le-DC une-filter inductance LF enkulu, ngoko ke yi-inverter yodidi lwangoku. Ngenxa yokuba i-frequency yokusebenza iphezulu, i-thyristors ye-4 iingalo zebhulorho ye-inverter circuit ithatha i-thyristors ekhawulezayo. I-L7 ~ L10 yi-commutation inductance ye-inverter thyristor, esetyenziselwa ukunciphisa izinga lokunyuka kwangoku kwe-thyristor ngexesha lokuhamba.

Umzobo 2-3 I-Schematic diagram ye-parallel inverter circuit