Title :
Harmonic cancellation for a twelve-pulse rectifier using DC bus modulation
Author :
Raju, N.R. ; Daneshpooy, A. ; Schwartzenberg, J.
Author_Institution :
Silicon Power Corp., Exton, PA, USA
Abstract :
This paper presents a new method to eliminate harmonics drawn by a twelve-pulse rectifier through modulation of the DC bus. A PWM converter with low ratings is inserted in the DC link and controlled in a fashion that results in sinusoidal currents at the input. The bulk of the power transfer is handled by the diode bridges, while the additional PWM converter deals only with a ripple voltage. Circuit implementations applicable for series and parallel connections of the two constituent six-pulse sections are described. The proposed approach offers a low-cost alternative to PWM rectifiers or 18-pulse rectifiers. Operation of the circuit is verified through computer simulations.
Keywords :
AC-DC power convertors; PWM power convertors; circuit simulation; harmonic distortion; harmonics suppression; power conversion harmonics; power engineering computing; rectifying circuits; DC bus modulation; DC link; PWM converter; computer simulation; harmonics elimination; power transfer; ripple voltage; twelve-pulse rectifier harmonic cancellation; Bridge circuits; Diodes; Inductors; Power harmonic filters; Power system harmonics; Pulse width modulation; Pulse width modulation converters; Rectifiers; Silicon; Voltage;
Conference_Titel :
Industry Applications Conference, 2002. 37th IAS Annual Meeting. Conference Record of the
Conference_Location :
Pittsburgh, PA, USA
Print_ISBN :
0-7803-7420-7
DOI :
10.1109/IAS.2002.1042801
