Single-Switch Single-Phase Three-Stage Boost Rectifier

Abstract

Single-phase three-stage boost rectifier is studied. This has two capacitors for pumping action in each positive and negative DC line, and so the output voltage is approximately equal to that of voltage-tripler rectifier. An only active power switching device also provides the necessary control over the current. The experimental results under the current-mode control confirm that the input current can almost be waveshaped sinusoidally with a near-unity power factor operating at higher values of the output voltage.