Improved control strategy on buck-type converter with power factor correction scheme

Abstract

Buck-Type high-power-factor PWM active converter topology is not only sufficiently capable of the effective elimination of input current harmonics, but also its characteristics include high efficiency, absence of inrush current, the capability to obtain low DC output voltage, ability to protect against short circuit, and so force. The buck-type high-power-factor converter has the inherent capability to become attractive power supplies for telecommunications energy systems. On the other hand, because this type of converter must employ high-inductance reactors, these tend to increase equipment in size and weight, and this has prevented their widespread use.This paper presents a new control strategy for Buck-type high-power-factor PWM converter which can reduce the size and weight of reactor and also eliminate the ripple component included into output voltage. The operating principle and simulation results are described.

Effect of Non-Idealities on the Design and Performance of a DC-DC Buck Converter

“…Direct current (DC)-DC converters are widely used as power supply in various applications [1]- [4]. Several applications, such as aerospace, military, chemical refineries, and mines, require highly regulated, optimally designed, and compact power supplies.…”