| Abstract: | A buck-type power factor correction (PFC) converter is not only effectively capable of eliminating utility input current harmonics; its related characteristics also include high efficiency, absence of inrush current, capability of obtaining low dc output voltage, ability to protect against short circuit, and so forth. On the other hand, because this type of rectifier must employ inductors design for high inductance, the buck-type PFC converter tends to increase the volumetric size and weight, and this has prevented its widespread use. This paper presents a new control strategy for this type of converter which can reduce the size and weight of the inductor and also eliminate the ripple components included in the output voltage waveform. The operating principle, simulation and experimental results obtained by a prototype rectifier are described. |
