A Bridge-Less Cuk-Derived Voltage Doubler Based Power Factor Correction Rectifier

In this paper, a bridge-less (BL) Cuk-derived voltage doubler based power factor correction (PFC) rectifier is proposed. The voltage gain of this converter is doubled through the use of two Cuk converter cells whose inputs are organized in parallel and the outputs in series. In comparison with a conventional dual BL-PFC converter, the proposed converter can either reduce voltage stress over the switches or doubles the output voltage gain. Moreover, each converter cell operates with an alternative voltage half cycle, which improves thermal management and power density of the rectifier. Also, BL-PFC Cuk derived rectifier uses a cost-effective single sensor based voltage control approach. As a result, the converter is designed to operate in discontinuous inductor current mode with power factor correction and minimal total harmonic distortion (THD). Further, the steady-state analysis of the converter is presented along with its design, simulation and experimental results. The proposed rectifiers verified by experimental prototype with reduced power rating. The test results shows the effectiveness of proposed converter. The significant outcomes of the proposed rectifier are doubled output voltage gain, lesser THD, and almost unity power factor.