Title :
A flexible and low cost design for flyback AC/DC converter with harmonic current correction
Author :
Chang, Lon-Kou ; Liu, Hsing-Fu
Author_Institution :
Electr. & Control Eng. Dept., Nat. Chiao Tung Univ., Hsingchu, Taiwan
Abstract :
A new simple flyback AC/DC converter with harmonic current correction and fast output voltage regulation is presented. In the proposed AC/DC converter, an extra winding is wounded in transformer and yields two major merits: the bulk inductor used in the conventional boost-based PFC cell is omitted in the proposed converter and consequently almost 1/2 volume and weight in magnetic material can be saved. The voltage across bulk capacitor can be hold under 450 V by tuning transformer windings ratio even though the converter operates in wide range of input voltage (90 V/spl sim/265 V/ac). This new converter complies with IEC 61000-3-2 under the load range of 200 W and it has fast output voltage regulation.
Keywords :
AC-DC power convertors; capacitors; power conversion harmonics; power factor correction; transformer windings; voltage control; 200 W; 450 V; 90 to 265 V; boost-based PFC cell; bulk capacitor; bulk inductor; flyback AC-DC converter; harmonic current correction; magnetic material; transformer windings; voltage range; voltage regulation; Analog-digital conversion; Capacitors; Circuits; Costs; DC-DC power converters; IEC standards; Inductors; Power harmonic filters; Reactive power; Switches;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 2003. APEC '03. Eighteenth Annual IEEE
Conference_Location :
Miami Beach, FL, USA
Print_ISBN :
0-7803-7768-0
DOI :
10.1109/APEC.2003.1179287
