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. © 2005 IEEE.
Rodríguez, J. R., Pontt, J., Silva, C., Wiechmann, E. P., Hammond, P. W., Santucci, F. W., Álvarez, R., Musalem, R., Kouro, S., & Lezana, P. (2005). Large current rectifiers: State of the art and future trends. IEEE Transactions on Industrial Electronics, 738-746. https://doi.org/10.1109/TIE.2005.843949