| Abstract |
Development of switching power supplies for the telecommunications applications have been
drastically moving towards high quality drawn source power. Therefore, Power-Factor-Correction
(PFC) converters have been widely used in power electronics. One of the most common circuits
used to achieve unity power factor is the boost PFC circuit with average-current-mode control. The
main feature of this circuit is using two control loops, feedback and feed-forward, and multiplier.
Stability is the most important parameter to achieve the reliability of any system. Stability
discussion for boost PFC converter with average-current-mode control is one from the most difficult
and interesting subject due to its nonlinearity. In this paper, the stability of this boost PFC circuit is
investigated. A novel empirical method to judge the PFC converter stability by comparing the
consequence of charging and discharging energy on the output capacitor is proposed and proved by
simulation and experiment. |
