Beddelka Sameecado: Sida Resonance uu u beddelo gariiradda beddelka Waxtarka Sare

Waa maxay, af cad

Transformers intooda badani waa "amus": si fudud ayay kor ugu kiciyaan ama hoos ugu dhigaan tamar go'an. Transformer-ka resonant wuu ka duwan yahay - si ula kac ah ayaa loogu dhisay wareegga wareega, si la mid ah gambaleelka garaaca ka dib markaad garaacdo. Adiga oo saaraya capacitor-ka guud ahaan ama si taxane ah dabaylaha, transformer-ka iyo capacitor-ku waxa ay sameeyaan "taangi" habaysan oo tamar hore iyo hor u rogaya inta jeer ee dabiiciga ah. Khiyaamadaas keli ah waxay daaha ka qaadaysaa tamar sare oo cajiib ah iyo waxtarka rikoodhka jabinta labadaba.

Mabda'a, laba dhadhan

Transformers-ka caadiga ah ee koronto-dhaliyaha sare - gariiradda Tesla, gariiradda shidiyaha gaariga, beddelka iftiinka dambe ee shaashadaha LCD-ka-isticmalaan dhawaaq si ay ugu dhuftaan danab. Tamarta waxaa lagu shubaa taangiga wareeg kasta, sidaas darteed korantadu waxay kor u kacdaa in ka badan waxa saamiga leexashada keligiis bixinayo.

Dhadhanka labaad waa beddelka beddelka resonant LLC oo laga helay sahay koronto casri ah. Halkan transformer's inductance leakage inductance (Lr) iyo magnetizing inductance (Lm) , oo ay weheliyaan capacitor resonant (Cr), samee taangiga LLC. Inta jeer ee beddelka waxa lagu xaaqaa haanta labada jeer ee dabiiciga ah - fr1 = 1 / (2π√(Lr·Cr)) iyo fr2 = 1 / (2π√((Lr+Lm)·Cr))) - si loo dejiyo wax soo saarka.

Tusaalaha codsiga: EV charger

Baabuurka korontada ku shaqeeya ee korka saaran ama sahayda korantada ee server-ka, heerka LLC wuxuu si joogto ah u gaadhaa in ka badan 96 % waxtarka (badanaa 97-98%), marka loo eego soo saaraha caadiga ah iyo qoraalada codsiga. Sixirku waa beddelka jilicsan : sababtoo ah taangiga ayaa ku qasbaya korantada beddelka iyo hadda iyada oo loo marayo eber, MOSFET-yadu waxay ku shidaan koronta eber ( ZVS ) Iyada oo ku dhawaad ​​​​aan jirin khasaare isku-dhafan, beddeliyuhu wuxuu ku socon karaa 100 kHz–1 MHz isagoo isticmaalaya magnets aad u yar.

Digniinaha injineernimada

Dhanka LLC, transformerku hadda ma ahan "kaliya saamiga." Waa in aad naqshadayso Lr-keeda (iyada oo loo marayo interleave dabaysha, farqiga hawada, ama lugta shunt) iyo Lm-keeda. Saamiga inductance k = Lm/Lr (sida caadiga ah 3-7 ee naqshadaha la taaban karo) ayaa dejinaya kala duwanaanshaha faa'iidada: k yar waxay bixisaa faa'iido ballaaran laakiin luminta magnetizing sare; k weyni wuu ka waxtar badan yahay laakiin wuu ka sii yar yahay. Dulqaadashada qaybuhu waa arrin - boqolkiba yar oo leexleex ah Lr ama Cr ayaa beddesha goobta hawlgalka.

Khalad guud

"Resonance macnaheedu waa qalab hiwaayadeed adag oo ay tahay inuu tamar lumiyo." Khalad. Beddelka jilicsan wuxuu yareeyaa lumitaanka beddelka 60% ama in ka badan oo ka soo horjeeda naqshadaha adag - waana sababta dhabta ah ee LLC ay u tahay topology-ga ugu sarreeya ee dabaysha hufan iyo sahayda xarunta xogta.

Xaqiiqo madadaalo leh

Gariiradda Tesla dhab ahaantii waa koronto-bixiye -core hawo- mareen kaas oo heerka labaad uu la jaanqaadi karo awooddiisa khaldan. Iyo LLC, saamiga leexashada inta badan wuxuu dejiyaa faa'iidada korantada - shaqada dhabta ah waxaa lagu sameeyaa daadinta iyo kicinta magnetizing. Badbaadada aaladahan waxay raacdaa IEC 61558-1 (guud) iyo, noocyada beddelka, IEC 61558-2-16 .