The present invention relates to a vehicle OBC charging system and a control method therefor. The vehicle OBC charging system of the present invention comprises: a power factor correction converter for converting AC power input from an external AC power source into DC power to output the same; a DC-DC converter including a first switching circuit unit for receiving the DC power output from the power factor correction converter, and an LLC resonance tank connected to the first switching circuit unit, and converting the DC power from the power factor correction converter to transmit the same to a high-voltage battery; and a charging control unit including a PFC control unit for controlling the power factor correction converter and a resonance control unit for controlling the first switching circuit unit. The resonance control unit synchronizes a PWM period for performing PWM control on the switching of a switch of the first switching circuit unit and a control period for performing an operation for the PWM control. Accordingly, stable control can be performed.

    본 발명은 차량용 OBC 충전 시스템 및 그 제어 방법에 대한 것이다. 본 발명은, 외부 AC 전원으로부터 입력받은 교류 전력을 직류 전력으로 변환하여 출력하는 역률보상 컨버터; 상기 역률보상 컨버터로부터 출력된 직류 전력을 전달받는 제 1 스위칭 회로부와, 상기 제 1 스위칭 회로부와 연결된 LLC 공진 탱크를 포함하여, 상기 역률 보상 컨버터로부터의 직류 전력을 전력 변환하여 고전압 배터리로 전달하는 DC-DC 컨버터; 및 상기 역률보상 컨버터를 제어하는 PFC 제어부와 상기 제 1 스위칭 회로부를 제어하는 공진 제어부를 포함하는 충전 제어부;를 포함하고, 상기 공진 제어부는, 상기 제 1 스위칭 회로부의 스위치의 스위칭을 PWM 제어하는 PWM 주기와, 상기 PWM 제어를 위한 연산을 수행하는 제어 주기를 동기시키는 것을 특징으로 하는 차량용 OBC 충전 시스템을 제공한다.


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    Title :

    OBC VEHICULAR ON BOARD CHARGER CHARGING SYSTME AND CONTROLLING METHOD THEREOF


    Additional title:

    차량용 OBC 충전 시스템 및 그 제어 방법


    Contributors:
    LIM DONG HWI (author) / KIM KYO MIN (author)

    Publication date :

    2021-07-09


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Korean


    Classification :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / 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





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