公开(公告)号：EP2733842B1

公开(公告)日：2018-07-04

申请号：EP12192811.3

申请日：2012-11-15

Applicant: ABB Schweiz AG

Inventor： Zanarini, Alessandro ,  Peyrl, Helfried ,  Boechat, Marc-Alexandre ,  Besselmann, Thomas

IPC: H02P21/00

CPC classification number: H02M1/08 ,  H02P21/00

Abstract: A method for controlling an electrical converter (12) comprises the steps of: receiving an actual electrical quantity (20) relating to the electrical converter (12) and a reference quantity (22); determining a future state of the electrical converter (12) by minimizing an objective function based on the actual electrical quantity and the reference quantity as initial optimization variables; and determining the next switching state for the electrical converter (12) from the future state of the electrical converter (12). The objective function is iteratively optimized by: calculating optimized unconstrained optimization variables based on computing a gradient of the objective function with respect to optimization variables; and calculating optimization variables for a next iteration step by projecting the unconstrained optimization variables on constraints. The computation of the gradient and/or the projection is performed in parallel in more than one computing unit (44, 50, 70).