A multi-pulse diode rectifier with a coupled three-phase reactor - the design method

The article presents the principle of operation and design method of a 24-pulse power network converter system with direct-current voltage output, the concept and practical realisation of which was worked out within the framework of a research project financed by the State Committee for Scien- tific Research. The project concerned an up-to-date topic of power-electronic conversion of the alternate current power drawn from a supply line, without negative effect of the con- verter on this line. The presented converter allows significant reduction of undesirable higher harmonics in the power net- work current, including the elimination of harmonics of an or- der of 23 and 25. The 24-pulse nature of operation of the sys- tem is obtained using three sets of coupled three-phase power network reactors (CTR).