전기자동차의 전력변환시스템이 개시된다. 본 발명의 일실시예에 따른 전기자동차의 전력변환시스템은 전기자권선을 가진 고정자와, 계자권선 및 영구자석을 가진 회전자를 포함하는 전동기와, 복수의 스위칭소자를 포함하고 복수의 스위칭소자를 스위칭하는 것에 의해 계자권선에 계자전류를 공급하고 계자권선에 흐르는 계자전류의 방향을 전환시키는 계자구동회로와, 전장부하와 전기적으로 연결되고 계자권선과 연결된 출력 커패시터 및 전동기가 정지상태일 때 계자구동회로의 스위칭소자를 제어하여 전동기의 계자권선, 계자구동회로의 스위칭소자 및 출력 커패시터를 이용하여 입력전압을 입력전압보다 낮은 전압레벨의 직류전압으로 변환하여 전장부하에 제공하는 제어부를 포함한다.

    Disclosed is a power conversion system of an electric vehicle. The power conversion system of an electric vehicle according to an embodiment of the present invention comprises: a motor including a stator having an armature winding and a rotor having a field winding and a permanent magnet; a field driving circuit including multiple switching elements, supplying a field current to the field winding via the switching of the multiple switching elements, and converting the direction of the field current flowing through the field winding; an output capacitor electrically connected to an electronic load and connected to the field winding; and a control part for controlling the switching elements of the field driving circuit when the motor is stopped to convert an input voltage into a direct current voltage lower than the input voltage by using the field winding of the motor, the switching elements of the field driving circuit and the output capacitor and provide the direct current voltage to the electronic load.


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    Title :

    POWER CONVERSION SYSTEM FOR ELECTRIC VEHICLES


    Additional title:

    전기자동차의 전력변환시스템


    Publication date :

    2022-05-13


    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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