Title :
A new passive 28-step current shaper for three-phase rectification
Author :
Chen, Chern-Lin ; Horng, Guo-Kiang
Author_Institution :
Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan
fDate :
12/1/2000 12:00:00 AM
Abstract :
A new passive 28-step current shaper for three-phase rectification is proposed in this paper. With a phase-shifting transformer on the AC side and six interphase transformers on the DC side, per-phase input current can be shaped into a 28-step sinusoidal waveform. The total harmonic distortion of AC input currents obtained is 6.53%, lower than one-half of that in a conventional 12-pulse converter. The transformer voltampere rating is also lowered down to one-fifth of that in a 12-pulse converter. A 2 kW experiment is performed to verify the proposed circuit.
Keywords :
harmonic distortion; phase shifters; rectifying circuits; transformers; 2 kW; 28-step sinusoidal waveform; AC input currents; AC side; DC side; interphase transformers; passive 28-step current shaper; per-phase input current; phase-shifting transformer; three-phase rectification; total harmonic distortion; transformer voltampere rating; Active inductors; Circuits; Diodes; Internet; Power semiconductor switches; Reactive power; Rectifiers; Shape; Switching frequency; Total harmonic distortion;
Journal_Title :
Industrial Electronics, IEEE Transactions on
