Title :
High efficiency telecom rectifier using a novel soft-switched boost-based input current shaper
Author :
Streit, Robert ; Tollik, Daniel
Author_Institution :
Ascom Energy Syst., Berne, Switzerland
Abstract :
A novel snubber circuit for the constant frequency pulsewidth-modulation (PWM) boost converter is presented to provide soft-switching transitions for the power switches and thus to reduce the power losses, component stresses, and noise generation. The proposed topology is very useful for the input current shapers in AC-AC applications. The operation of the circuit including its control block is explained and illustrated for a 1.5 kW, 100 kHz high-performance power-factor-corrected telecommunication rectifier
Keywords :
overvoltage protection; power convertors; pulse width modulation; rectifying circuits; telecommunication systems; 1.5 kW; 100 kHz; PWM boost convertor; component stresses; control block; noise generation; power losses; power switches; power-factor-corrected telecommunication rectifier; snubber circuit; soft-switched boost-based input current shaper; Frequency conversion; Noise reduction; Pulse circuits; Pulse width modulation; Pulse width modulation converters; Rectifiers; Snubbers; Stress; Switching converters; Telecommunications;
Conference_Titel :
Telecommunications Energy Conference, 1991. INTELEC '91., 13th International
Conference_Location :
Kyoto
Print_ISBN :
0-87942-670-5
DOI :
10.1109/INTLEC.1991.172474
