Title :
A novel three-phase rectifier with reduced THD
Author :
Ivensky, Gregory ; Ben-yaakov, Sam
Author_Institution :
Dept. of Electr. & Comput. Eng., Ben-Gurion Univ. of the Negev, Beer-Sheva, Israel
fDate :
6/23/1905 12:00:00 AM
Abstract :
A high power three-phase rectifier that does not require a passive phase shifter (e.g. polyphase multi-winding transformer) was studied analytically and by simulation. The proposed rectifier includes 6 uni-directional switches and 24 diodes that are used to realize two three-phase bridges. The outputs of the bridges are connected in parallel via two blocking reactors. One of the bridges is operating with a positive phase delay of 15° while the other is operated with a negative delay of 15°. Analytical derivations, confirmed by simulation, predict that THD of the proposed rectifier´s line current will be about 17% in a wide range of load currents. It is suggested that the proposed rectifier is advantageous in high power application
Keywords :
bridge circuits; harmonic distortion; power conversion harmonics; power semiconductor diodes; power semiconductor switches; reactors (electric); rectifying circuits; blocking reactors; diodes; high power three-phase rectifier; passive phase shifter; polyphase multi-winding transformer; positive phase delay; reduced THD; three-phase bridges; uni-directional switches; Analytical models; Bridges; Delay; Diodes; Inductors; Phase shifters; Phase transformers; Predictive models; Rectifiers; Switches;
Conference_Titel :
Power Electronics Specialists Conference, 2001. PESC. 2001 IEEE 32nd Annual
Conference_Location :
Vancouver, BC
Print_ISBN :
0-7803-7067-8
DOI :
10.1109/PESC.2001.954195
