A multi-pulse front-end rectifier system with electronic phase-shifting for harmonic mitigation in motor drive applications

Abstract

Abstract-In this paper, an electronic phase-shifting strategy has been optimized for a multi-parallel configuration of linecommutated rectifiers with a common dc-bus voltage used in motor drive application. This feature makes the performance of the system independent of the load profile and maximizes its harmonic reduction ability. To further reduce the generated low order harmonics, a dc-link current modulation scheme and its phase shift values of multi-drive systems have been optimized. Analysis and simulations have been carried out to verify the proposed method.

A Modular Active Front-End Rectifier With Electronic Phase Shifting for Harmonic Mitigation in Motor Drive Applications

“…In addition, a current modulation technique at the dc-link using Electronic Inductor (EI) technique is employed which substantially improves the input current quality. The proposed technique is an enhanced method based on previous introduced strategies by the authors in [5]- [8], [12], [15]. The introduction of a common dc-bus in this method makes the performance of the system independent of the load profile.…”