HARMONIC CURRENT SUPPRESSION METHOD AND HARMONIC CURRENT SUPPRESSION DEVICE OF POWER CONVERSION DEVICE,申请号US201113814288-传众专利搜索

HARMONIC CURRENT SUPPRESSION METHOD AND HARMONIC CURRENT SUPPRESSION DEVICE OF POWER CONVERSION DEVICE

申请公布号：US2013135907(A1)

申请号：US201113814288

申请日期：2011.08.05

申请公布日期：2013.05.30

申请人：

OI KAZUNOBU;TADANO YUGO;MEIDENSHA CORPORATION

发明人：OI KAZUNOBU;TADANO YUGO

分类号：H02M1/12

主分类号：H02M1/12

摘要：A current control unit takes a deviation between a current command value and a current flowing through an inverter of a power conversion device, and controls the inverter based on the deviation. A harmonic sensing part receives input of an output current of an AC filter, and outputs a predetermined order harmonic of the input current in a direct current value form. A disturbance observer estimates the disturbance of the harmonic based on the output current and a coefficient defined as an inverse function of a transfer function from harmonic suppression current command value to filter output current detection value. A harmonic suppression control unit takes the deviation between the estimated harmonic disturbance and a disturbance command value that suppresses the disturbance, and calculates a harmonic suppression current command value. The harmonic suppression current command value is superimposed on the current command value of the current control unit.