Patent ID: 6323624
Filing Date: 2001-11-27
Classification: H02J,H02M

Abstract:
A connecting procedure for a polyphased generator on a polyphased alternating voltage network, said connecting procedure being based on variable adjustable coupling elements, where the connecting is made by said adjustable electrical connecting elements having connecting degrees for the connecting of the elements which can be diversified during a controlled connecting period, said controlled connecting period being operated in consideration of a ""soft"" connecting on the network and a limit of a maximum amperage during the connecting period, the procedure of which consists in undertaking a continuous determination of a phase angle .phi. of the generator during the whole connecting period, and a continuous adjustment of the connecting degree of the coupling elements is made wherein successive load connecting of the generator is reached on the network, and the procedure includes the steps of:determining the generator phase angle .phi. by registering a time of zero passage of a phase voltage and a simultaneous detection of a respective thyristor power-zero passage period;indicating a difference between the two periods as an expression of the phase angle .phi. in the respective phase;adapting the phase angle .phi. successively at an ignition time of the thyristors, wherein the resulted connecting degree of the thyristors will be increased in a controlled rate regardless of the variations registered in the phase angle during the connecting period, and the thyristor aperture angle is decreased, when .phi. increases; andconsidering the adjustment that the amperage produced by the generator does not exceed a certain maximum value during and after the passage of the synchronous rotation number.