Title :
Single-switch three-phase AC/DC converter with high power factor and wide regulation capability
Author :
Malesani, L. ; Rossetto, L. ; Spiazzi, G. ; Tenti, P. ; Toigo, I. ; Lago, F. Dal
Author_Institution :
Dept. of Electr. Eng., Padova Univ., Italy
Abstract :
A single-ended pulse width modulated (PWM) three-phase rectifier is presented. It is capable of high power factor and wide output voltage regulation while using high-frequency transformer insulation. The circuit behavior is investigated with the assumption of discontinuous input current operation. Design criteria are derived. The actual converter performances are verified on a 1.5 kW prototype, fed by a 380 V AC supply, in which insulation and voltage adaptation are realized by a 50 Hz transformer. Resulting AC current distortion is below 7%, efficiency is better than 90%, and power density is in the range of 0.4 kW/1
Keywords :
high-frequency transformers; power convertors; power factor; power transformers; pulse width modulation; rectifiers; 1.5 kW; 380 V; 50 kHz; AC current distortion; AC/DC power convertors; PWM; design; discontinuous input current operation; efficiency; high-frequency transformer insulation; power density; power factor; power transformers; rectifier; regulation capability; three-phase; voltage adaptation; Circuits; DC-DC power converters; Power transformer insulation; Prototypes; Pulse transformers; Pulse width modulation; Reactive power; Rectifiers; Space vector pulse width modulation; Voltage control;
Conference_Titel :
Telecommunications Energy Conference, 1992. INTELEC '92., 14th International
Conference_Location :
Washington, DC
Print_ISBN :
0-7803-0779-8
DOI :
10.1109/INTLEC.1992.268430
