Large current rectifiers: State of the art and future trends

This paper presents the different technologies used in the generation of large controlled currents, in the kiloamperes range. After a brief review of processes requiring large currents, the paper discusses the working principles of thyristor phase-controlled rectifiers commonly used in these applications. Chopper-rectifiers using high-current insulated gate bipolar transistors are introduced as an alternative being considered in recent projects. The pulsewidth-modulated current-source rectifier, currently used in medium-voltage motor drives, is also analyzed as a future alternative for rectification in industrial processes. In addition, this paper presents the most important requirements and specifications to be considered in the applications of these high-power units. A system comparison is developed between thyristor and chopper-rectifiers in terms of quality of control, harmonics, power factor, losses, and efficiency.

[1]  T. Siebert,et al.  AC to DC power conversion now and in the future , 2001, Record of Conference Papers. IEEE incorporated Industry Applications Society. Forty-Eighth Annual Conference. 2001 Petroleum and Chemical Industry Technical Conference (Cat. No.01CH37265).

[2]  S. P. Kennedy.  Design and application of semiconductor rectifier transformers , 2001, Record of Conference Papers. IEEE incorporated Industry Applications Society. Forty-Eighth Annual Conference. 2001 Petroleum and Chemical Industry Technical Conference (Cat. No.01CH37265).

[3]  V. Scaini,et al.  High current DC choppers in the metals industry , 2000, Conference Record of the 2000 IEEE Industry Applications Conference. Thirty-Fifth IAS Annual Meeting and World Conference on Industrial Applications of Electrical Energy (Cat. No.00CH37129).

[4]  J. Beak,et al.  Re-using and re-rating older rectifiers with new DC/DC choppers , 2000, Record of Conference Papers. Industry Applications Society Forty-Seventh Annual Conference. 2000 Petroleum and Chemical Industry Technical Conference (Cat. No.00CH37112).

[5]  P. Buddingh,et al.  New life for old thyristor power rectifiers using contemporary digital control , 1999, Industry Applications Society 46th Annual Petroleum and Chemical Technical Conference (Cat.No. 99CH37000).

[6]  V. Scaini,et al.  Specifying DC chopper systems for electrochemical applications , 1999, Industry Applications Society 46th Annual Petroleum and Chemical Technical Conference (Cat.No. 99CH37000).

[7]  V. Scaini,et al.  High current DC choppers and their operational benefits , 1998, Record of Conference Papers. IEEE Industry Applications Society 45th Annual Petroleum and Chemical Industry Conference (Cat. No.98CH36234).

[8]  Nils Dipl Ing Bardahl,et al.  High Power Rectifiers , 1973 .