Buck–Boost-Type Unity Power Factor Rectifier with Extended Voltage Conversion Ratio
G. Ravindra Naik1, D. Bhavani2, T. Harikrishna Prasad3
1G. Ravindra Naik, Department of EEE, CMRCET, Hyderabad, India.
2D. Bhavani, Department of EEE, CMRCET, Hyderabad, India.
3T. Harikrishna Prasad, Department of EEE, CMRCET, Hyderabad, India.
Manuscript received on February 05, 2013. | Revised Manuscript received on February 12, 2013. | Manuscript published on February 15, 2013. | PP: 32-38 | Volume-1 Issue-3, February 2013. | Retrieval Number: C0148020213/2013©BEIESP
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© The Authors. Published By: Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: A buck–boost-type unity power factor rectifier is proposed in this paper. The main advantage of the proposed rectifier over the conventional buck–boost type is that it can perform input power factor correction (PFC) over a wider voltage conversion range. With a single switch, a fast well-regulated output voltage is achieved with a zero-current switch at turn-on. Moreover, the switch voltage stress is independent of converter load variation. The proposed converter is well suited for universal offline PFC applications for a low power range (< 150 W). The feasibility of the converter is confirmed with results obtained from a computer simulation and from an experimental prototype.
Keywords: Low harmonic rectifier, power factor correction (PFC), single-stage single-switch rectifier, unity power factor (UPF).