LongFu LUO, JiaZhu XU, ThanhNgoc TRAN, ZhiWen ZHANG, ZhiYu ZHAO

297

Operational characteristics of a ltering recti er transformer for industrial power systems

Operational characteristics of a ltering recti er transformer for industrial power systems

Many conventional methods focus on reducing the harmful impact of the poor power quality in industrial recti er systems, but they focus more on the harmonic problems of the utility grid than they do on that of the recti er transformer; hence, the recti er transformer would still be adversely a ected by harmonic pollution. In order to solve the problem, a ltering recti er transformer is proposed that adopts a harmonic current drainage system that incorporates tertiary winding and tuned harmonic lters. The impedance of the tertiary winding is specially designed and the tuned harmonic lters work together to restrain the harmonic current and give a good performance in the reactive power compensation close to the harmonic source. By deducing the current relationships between the windings of theltering recti er transformer, the principles of the harmonic suppression and reactive compensation are elaborated. The theoretical analysis shows that if the harmonic current drainage system is out of service, the characteristics of the operation parameters of the ltering recti er transformer are the same as those of the conventional one. While it is in service, the ltering recti er transformer could improve the total harmonic distortion of the grid side current, decrease the grid side current, reduce the grid side power, and enhance the grid side power factor. A prototype ltering recti er transformer was built and installed in an aluminum smelting plant. Both the simulation and the eld measurement results verify the correctness of the theoretical analysis. The mathematical relationships deduced in the paper will contribute to further study of the ltering recti er transformer on the vibration and temperature rise suppression of the windings. The project has demonstrated that the proposed ltering recti er transformer has promising prospects in various industrial power applications.
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Turkish Journal of Electrical Engineering and Computer Sciences-Cover
  • ISSN: 1300-0632
  • Yayın Aralığı: Yılda 6 Sayı
  • Yayıncı: TÜBİTAK
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Operational characteristics of a ltering recti er transformer for industrial power systems

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