公开(公告)号：US09312786B2

公开(公告)日：2016-04-12

申请号：US14646456

申请日：2012-12-21

Applicant: ABB Technology Ltd

Inventor： Ying Jiang-Häfner

IPC: H02M1/14 ,  H02M7/217 ,  H02M7/483 ,  H02M1/12 ,  H02M7/5395 ,  H02M1/00

CPC classification number: H02M7/483 ,  H02M1/12 ,  H02M1/14 ,  H02M7/217 ,  H02M7/5395 ,  H02M2001/0054 ,  H02M2007/4835 ,  Y02B70/1491

Abstract: Cells in a phase leg of a multilevel converter are controlled through regulating, using tap-changer control, the modulation index of the converter to above 0.80, providing a group of carrier waves for the phase leg, where these carrier waves are identical but displaced in time from each other with a time delay, providing a voltage reference for the phase leg being separate from voltage references provided for other phase legs, stop switching of the cells when waveform values of a power transmission converter waveform are detected to be in a selected interval around a peak value of the power transmission converter waveform and control switching of the cells based on comparisons of the respective carrier waves with the voltage reference when the waveform values of the power transmission converter waveform are detected to be outside the selected interval.

Abstract translation: 通过使用分接开关控制将转换器的调制指数调节到0.80以上，为相位支路提供一组载波来控制多电平转换器的相位支路中的单元，其中这些载波相同但位移在 时间延迟，提供相位腿的电压基准与提供给其他相位腿的电压基准分离，当检测到电力变换器波形的波形值处于选定的间隔时停止单元的切换 围绕电力变送器波形的峰值，并且当检测到电力变换器波形的波形值在所选择的间隔之外时，基于各载波与电压基准的比较来控制电池的切换。