Controlling a modular converter
    62.
    发明公开
    Controlling a modular converter 审中-公开
    Steuerung eines modularen Umrichters

    公开(公告)号:EP2703208A1

    公开(公告)日:2014-03-05

    申请号:EP12182924.6

    申请日:2012-09-04

    申请人: ABB Technology AG

    IPC分类号: B60L9/00

    摘要: A modular converter (10) comprises a plurality of converter cells (36), which are connected in series on a first side and are connected on a second side, wherein each converter cell (36) comprises an AC-to-DC converter (40) connected to the first side and a DC-to-DC converter (42) connected to the second side.
    A method for controlling the modular converter (10) comprises the steps of: estimating the power transferred by the modular converter (10); comparing the transferred power with a threshold value; when the transferred power is bigger than the threshold value, operating the modular converter in a normal load operation mode (116, 122, 128); when the transferred power is smaller than the threshold value, operating the modular converter in a low load operation mode (114, 120, 126), in which the converter cells (36) are operated, such that switching losses are reduced with respect to the normal load operation mode.

    摘要翻译: 模块转换器(10)包括多个转换器单元(36),它们在第一侧上串联连接,并在第二侧连接,其中每个转换器单元(36)包括一个AC-DC转换器(40) )和连接到第二侧的DC-DC转换器(42)。 一种用于控制模块转换器(10)的方法,包括以下步骤:估计由模块转换器(10)传送的功率; 将传送的功率与阈值进行比较; 当传输功率大于阈值时,以正常负载操作模式(116,122,128)操作模块化转换器; 当传送功率小于阈值时,将模块化转换器操作在其中操作转换器单元(36)的低负载操作模式(114,120,126)中,使得开关损耗相对于 正常负载运行模式。