Title :
Interleaved boost power factor corrector operating in discontinuous-inductor-current mode
Author :
Chan, C.H. ; Pong, M.H.
Author_Institution :
Dept. of Electr. & Electron. Eng., Hong Kong Univ., Hong Kong
Abstract :
This paper presents the basic operation of the discontinuous-inductor-current-mode (DICM) boost PFC and the improvement achieved by interleaving technique. The PFC is constructed by at least two boost cells, each cell is kept running in DICM. Input current of the PFC is analyzed by a numerical method and the optimum power factor is calculated in different modes of operation. The calculated result is verified by experiment and presented in graphical form with detailed discussion. The result shows that interleaving technique can alleviate the ripple current and improve the power factor. The improvement is obvious for the number of boost cells equal to 2 or 3 and the ripple alleviation is better when the PFC is operated in fixed frequency mode. The optimum power factor is improved up to 0.99 even without an input filter
Keywords :
DC-DC power convertors; inductors; power factor correction; discontinuous-inductor-current mode; fixed frequency operation; graphical form; input current; interleaved boost power factor corrector; interleaving technique; optimum power factor; power factor improvement; ripple current alleviation; variable frequency operation; Electronic equipment; Equations; Inductors; Interleaved codes; Power engineering and energy; Power harmonic filters; Power system harmonics; Reactive power; Switching frequency; Zero current switching;
Conference_Titel :
Power Conversion Conference - Nagaoka 1997., Proceedings of the
Conference_Location :
Nagaoka
Print_ISBN :
0-7803-3823-5
DOI :
10.1109/PCCON.1997.645646
