An LLC resonant converter and a method of operating same are disclosed. An LLC resonant converter according to one aspect of the present embodiment, comprises: a primary circuit for converting a DC input voltage Vin into an AC voltage having a predetermined level; and a secondary circuit for rectifying the converted AC voltage to supply a DC output voltage Vo, wherein the primary circuit comprises: a first resonant circuit unit including a transformer T1, a resonant inductor Lpl1, and a resonant capacitor Cr1; a second resonant circuit unit including a transformer T2, a resonant inductor Lpl2, and a resonant capacitor Cr2; and a plurality of switching elements for converting the DC input voltage Vin into an AC voltage through a switching operation to apply the converted AC voltage to the first resonant circuit unit and the second resonant circuit unit, and wherein the secondary circuit comprises a rectification unit connected to secondary coils of the transformer T1 and the transformer T2 to rectify an AC voltage converted by the primary circuit and including a plurality of diodes, wherein the resonant capacitor Cr1 and the resonant capacitor Cr2 have one end and the other end, respectively, commonly connected to prevent a current imbalance of the secondary circuit due to the tolerance of a resonant element.

    L'invention concerne un convertisseur résonant LLC et son procédé de fonctionnement. Un convertisseur résonant LLC selon un aspect du présent mode de réalisation comprend : un circuit primaire pour convertir une tension continue d'entrée Vin en une tension alternative ayant un niveau prédéterminé; et un circuit secondaire pour redresser la tension alternative convertie pour fournir une tension continue de sortie Vo, le circuit primaire comprenant : une première unité de circuit résonant comprenant un transformateur T1, une bobine d'induction résonante Lpl1 et un condensateur résonant Cr1; une seconde unité de circuit résonant comprenant un transformateur T2, une bobine d'induction résonante Lpl2 et un condensateur résonant Cr2; et une pluralité d'éléments de commutation pour convertir la tension continue d'entrée Vin en une tension alternative par l'intermédiaire d'une opération de commutation pour appliquer la tension alternative convertie à la première unité de circuit résonant et à la seconde unité de circuit résonant, et le circuit secondaire comprenant une unité de redressement connectée à des bobines secondaires du transformateur T1 et du transformateur T2 pour redresser une tension alternative convertie par le circuit primaire et comprenant une pluralité de diodes, le condensateur résonant Cr1 et le condensateur résonant Cr2 ayant une extrémité et l'autre extrémité, respectivement, communément connectées pour empêcher un déséquilibre de courant du circuit secondaire en raison de la tolérance d'un élément résonant.

    LLC 공진컨버터 및 그 동작 방법을 개시한다. 본 실시예의 일 측면에 의하면, 직류 입력전압 Vin을 소정 레벨의 교류전압으로 변환하는 1차측 회로 및 상기 변환된 교류전압을 정류하여 직류 출력전압 Vo을 공급하는 2차측 회로를 포함하는 LLC 공진컨버터(resonant converter)에 있어서, 상기 1차측 회로는, 변압기 T1, 공진 인덕터 Lpl1 및 공진 커패시터 Cr1을 포함하는 제1 공진회로부; 변압기 T2, 공진 인덕터 Lpl2 및 공진 커패시터 Cr2를 포함하는 제2 공진회로부; 스위칭 동작을 통해 상기 직류 입력전압 Vin을 교류전압으로 변환하여 상기 제1 공진회로부 및 상기 제2 공진회로부에 인가하는 복수의 스위칭소자를 포함하고, 상기 2차측 회로는, 상기 변압기 T1 및 상기 변압기 T2의 2차측 코일에 접속되어 상기 1차측 회로에 의해 변환된 교류전압을 정류하는 복수의 다이오드를 포함하는 정류부를 포함하되, 상기 공진 커패시터 Cr1 및 상기 공진 커패시터 Cr2는 공진요소의 허용오차(Tolerance)로 인한 상기 2차측 회로의 전류불평형을 방지하기 위하여 일단 및 타단이 각각 공통 연결되는 LLC 공진 컨버터를 제공한다.


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    Title :

    LLC RESONANT CONVERTER AND METHOD OF OPERATING SAME


    Additional title:

    CONVERTISSEUR RÉSONANT LLC ET SON PROCÉDÉ DE FONCTIONNEMENT
    LLC 공진컨버터 및 그 동작 방법


    Contributors:
    KIM EUNSU (author) / KOOK YOON SANG (author)

    Publication date :

    2019-11-07


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Korean


    Classification :

    IPC:    H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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