Title :
Input current shaper based on the series connection of a voltage source and a loss-free resistor
Author :
Sebastián, J. ; Hernando, M.M. ; Villegas, P. ; Díaz, J. ; Fontán, A.
Author_Institution :
Dept. de Ingenieria Electr. Electron. de Comput. y Sistemas, Oviedo Univ., Spain
Abstract :
A new input current shaper is proposed in this paper. The operating principle is based on the connection of a voltage source and a loss-free resistor (LFR) between the input rectifier and the bulk capacitor in a conventional switching-mode power supply with no power factor correction. Both the voltage source and the LFR are obtained as an additional output from the power converter´s transformer. This additional output is a forward-type scheme with one extra inductor. With the final topology, a good tradeoff between capacitor voltage, re-cycling energy and harmonic content can be established in order to comply with IEC 1000-3-2 at different power levels
Keywords :
AC-DC power convertors; harmonic distortion; power system harmonics; rectifying circuits; resistors; standards; switched mode power supplies; AC/DC power conversion; IEC 1000-3-2; bulk capacitor; energy re-cycling; forward-type topology; harmonic content; inductor; input current shaper; input rectifier; loss-free resistor; operating principle; power converter transformer; switching-mode power supply; voltage source; Capacitors; IEC standards; Inductors; Power factor correction; Power supplies; Power system harmonics; Rectifiers; Resistors; Topology; Voltage;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 1998. APEC '98. Conference Proceedings 1998., Thirteenth Annual
Conference_Location :
Anaheim, CA
Print_ISBN :
0-7803-4340-9
DOI :
10.1109/APEC.1998.647730
