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Novel topologies of 24-pulse rectifier with conventional transformers for phaseshifting

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2 Author(s)
Arvindan, A.N. ; Dept. of Electr. & Electron. Eng., Anna Univ. (Chennai), Chennai, India ; Guha, A.

Two 24-pulse rectifier topologies based on phase shifting by conventional magnetics is proposed. Four 3-phase systems are obtained from a single 3-phase source using novel interconnection of conventional single- and 3-phase transformers. Phase shifts of 15° and 30° are made using phasor addition of relevant line voltages with a combination of single-phase and three-phase transformers respectively. The four three-phase systems are mutually displaced from each other by 15°. Each three-phase system feeds a 6-pulse diode rectifier and the four diode rectifiers are series cascaded to provide a 24-pulse dc output voltage. PSCAD based simulation and experimental results that confirm the design efficacy are presented.

Published in:

Electrical Energy Systems (ICEES), 2011 1st International Conference on

Date of Conference:

3-5 Jan. 2011