The present invention relates to a power conversion apparatus for an elevator motor, and more specifically, to a power conversion apparatus for an elevator motor, which can output an output voltage close to a sine wave by including a converter which converts commercial AC power to DC power as a three-level converter, to realize reduced distortion and reduce total harmonic distortion (THD), can improve system efficiency by reducing switch loss or conduction loss, and can prevent an increase in manufacturing cost by including an inverter which converts DC power back to AC power as a two-level inverter. The power conversion apparatus for an elevator motor includes: a three-phase power supply unit providing AC three-phase power; a converter unit converting the AC three-phase power to DC power; a smoothing unit having a DC link capacitor for smoothing and storing the DC power converted by the converter unit; an inverter unit converting DC power provided from the smoothing unit into AC power; and an electric motor driven by AC power provided from the inverter unit.

    본 발명은 엘리베이터 전동기용 전력변환장치에 관한 것으로, 보다 구체적으로 상용 교류전원을 직류전원으로 변환하는 컨버터를 3 레벨 컨버터로 구성하여 정현파에 가깝게 출력 전압을 출력함으로써 왜곡이 적으며 전고조파 왜율(THD)을 감소시키고 스위치 손실이나 도통 손실을 줄여 시스템 효율을 향상시킬 수 있으며 직류전원을 다시 교류전원으로 변환하는 인버터는 2 레벨 인버터로 구성하여 제조 비용의 상승을 막을 수 있는 엘리베이터 전동기용 전력변환장치에 관한 것이다.


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    Title :

    Apparatus for driving motor for elevator


    Additional title:

    엘리베이터 전동기용 전력변환장치


    Contributors:

    Publication date :

    2021-07-08


    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 / B66B Aufzüge , ELEVATORS / H02H EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS , Schutzschaltungsanordnungen / H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS , Steuern oder Regeln von elektrischen Motoren, elektrischen Generatoren, dynamoelektrischen Umformern



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