公开(公告)号：US09831760B2

公开(公告)日：2017-11-28

申请号：US15097209

申请日：2016-04-12

Applicant: ABB Schweiz AG

Inventor： Peter Al-Hokayem ,  Tobias Geyer ,  Nikolaos Oikonomou

IPC: H02M1/12 ,  H02P21/14 ,  H02P23/14 ,  H02P21/30 ,  H02P23/30 ,  H02M7/5387 ,  H02M1/00

CPC classification number: H02M1/126 ,  G05B2219/41406 ,  H02M7/53873 ,  H02M7/53875 ,  H02M2001/0003 ,  H02P21/141 ,  H02P21/30 ,  H02P23/14 ,  H02P23/30

Abstract: An electrical converter is interconnected via a filter with an electrical load or an electrical power source. A method for controlling the converter comprises the steps of: receiving a reference flux (ψ*i) for the electrical converter; determining output signals (y) comprising currents and/or voltages measured in the filter; determining an estimated flux (ψi) from the output signals (y); determining a corrective flux (ψi,damp) from the output signals (y) based on a mathematical model of the filter and a quadratic cost function; determining control input signals (u) for the electrical converter based on a sum of the estimated flux (ψi) and the corrective flux (ψi,damp); controlling the converter with the control input signals (u); and algorithmic filtering of at least one of the output signals (y) by applying a signal filter to the at least one output signal, which is designed for amplifying the at least one output signal at a resonance frequency of the filter, whereby the corrective flux (ψi,damp) is determined from the filtered output signals.