CONTROL SYSTEM FOR A WIND TURBINE

摘要

The present invention relates to a control system (9) for a wind turbine, comprising an electrical device that is arranged for being used during normal operation of a wind turbine and a power source (92) that is arranged to be used as an emergency power supply to a blade pitch motor (91), wherein the blade pitch motor (91) is arranged to test at least one property of said power source (92). The invention also relates to a method for testing a power source.