| Abstract |
In this paper, the impact of the coupling coefficient K on the operation of the passive clamp coupled inductor Boost converter is investigated and an accurate dc voltage gain VN for Continues Conduction Mode (CCM) is deduced. It appears the dc voltage gain of the coupled inductor Boost converter is negatively affected, not only by the coupling coefficient, but also from the output current Io of the converter. The steady state analysis and the appropriate procedure for the dc voltage gain derivation are described. In order to examine the operation of the converter and the impact of the coupling coefficient K as well as the output current Io in CCM on the dc voltage gain VN of the converter, various curves are presented. Furthermore, experimental results based on a 250W laboratory prototype with two magnetic elements of different coupling coefficient are also presented for the evaluation of the theoretical analysis. |
