Patent ID: 6479907
Filing Date: 2002-11-12
Classification: F03D,F05B,H02J,Y02E

Abstract:
A plant for generating electric power comprising:at least two generators separately driven by wind power and adapted to feed an alternating voltage to an alternating voltage line in common, a converter having a plurality of switchable power semiconductor devices adapted to convert alternating voltage into direct voltage and conversely connected with its alternating voltage side to said alternating voltage line, a unit adapted to control the switching of the power semiconductor devices in the converter for controlling the frequency of the alternating voltage on the alternating voltage line from the generators; and an arrangement adapted to determine an optimum frequency of the voltage on the alternating voltage line for the wind conditions prevailing, with respect to the maximum power that may be generated by the plant, and to send orders to the unit to control the converter for obtaining the optimum frequency of said alternating voltage, said arrangement comprising means adapted to measure the total power fed from the wind power generators towards the converter, and members adapted to send orders to the unit for adjusting the control of the converter depending upon power values delivered by said means so that a power maximum is obtained.