Title :
A new 12 kW three-phase impulse high power factor AC-DC converter with regulated output voltage for rectifier units
Author :
de Seixas, Falcondes Jose Mendes ; Barbi, Ivo
Author_Institution :
UNESP, Sao Paulo Univ., Brazil
Abstract :
This work presents a new high power factor three-phase rectifier based on a Y-connected differential autotransformer with reduced kVA and 18-pulse input current followed by three DC-DC boost converters. The topology provides a regulated output voltage and natural three-phase input power factor correction. The lowest input current harmonic components are the 17th and the 19th. Three boost converters, with constant input currents and regulated parallel connected output voltages are used to process 4 kW each. Analytical results from Fourier analyses of winding currents and the vector diagram of winding voltages are presented. Simulation results to verify the proposed concept and experimental results are shown in the paper
Keywords :
AC-DC power convertors; DC-DC power convertors; autotransformers; harmonic distortion; power conversion harmonics; power factor correction; rectifying circuits; transformer windings; 12 kW; 18-pulse input current; 4 kW; DC-DC boost converters; Fourier analyses; Y-connected differential autotransformer; constant input currents; high power factor three-phase rectifier; input current harmonic components; natural three-phase input power factor correction; power conversion topology; regulated output voltage; regulated parallel connected output voltages; vector diagram; winding currents; winding voltages; AC-DC power converters; Bridge circuits; Costs; Power factor correction; Reactive power; Rectifiers; Switches; Switching converters; Transformers; Voltage;
Conference_Titel :
Telecommunication Energy Conference, 1999. INTELEC '99. The 21st International
Conference_Location :
Copenhagen
Print_ISBN :
0-7803-5624-1
DOI :
10.1109/INTLEC.1999.794076
