Patent ID: 9093924
Filing Date: 2015-07-28
Classification: H02J,H02M,H02P,Y02E

Abstract:
1. A method of controlling a grid side converter of a wind turbine, wherein an output of the grid side converter is connected or connectable via a power line to an input of a grid transformer, comprising: computing a converter volt-sec occurring at the output of the grid side converter based on a converter voltage occurring at the output of the grid side converter; determining a volt-sec error between the determined converter volt-sec and a converter volt-sec reference, wherein the converter volt-sec reference is determined based on an active power reference, a reactive power reference, a line current and a line voltage occurring at the input of the grid transformer; and controlling, based on the determined volt-sec error, the grid side converter such that the volt-sec error is partially or fully compensated.