Analysis of three-phase rectifier systems with controlled DC-link current under unbalanced grids
MetadataShow full item record
© 2017 IEEE. Voltage unbalance is the most common disturbance in distribution networks, which gives undesirable effects on many grid connected power electronics systems including Adjustable Speed Drive (ASD). Severe voltage unbalance can force conventional three-phase diode rectifiers into almost single-phase operation, which degrades the grid power quality and also imposes a significant negative impact on the ASD system. This major power quality issue affecting the conventional rectifiers can be attenuated by controlling the DC-link current based on an Electronic Inductor (EI) technique. The purpose of this paper is to analyze and compare the performance of an EI with a conventional three-phase rectifier under unbalanced grid conditions. Experimental and simulation results validate the proposed mathematical modeling.
Showing items related by title, author, creator and subject.
Addressing the unbalance loading issue in multi-drive systems with a DC-link modulation scheme for harmonic reductionYang, Y.; Davari, P.; Zare, Firuz; Blaabjerg, F. (2016)© 2016 IEEE. Concerning cost, volume, and efficiency, Adjustable Speed Drive (ASD) systems are commonly employed with diode rectifiers or Silicon Controlled Rectifiers (SCR) as the front-ends (i.e., ac-dc converters). ...
Enhanced Phase-Shifted Current Control for Harmonic Cancellation in Three-Phase Multiple Adjustable Speed Drive SystemsYang, Y.; Davari, P.; Zare, Firuz; Blaabjerg, F. (2017)© 2017 IEEE. A phase-shifted current control can be employed to mitigate certain harmonics induced by the diode rectifiers and silicon-controlled rectifiers as the front ends of multiple parallel adjustable speed drive ...
Davari, P.; Yang, Y.; Zare, Firuz; Blaabjerg, F. (2016)© 2013 IEEE. A continuous improvement of power electronics technology has widely increased the applications of adjustable speed motor drives in many areas. Beyond the control flexibility, the power electronics devices ...