Analysis and Implementation of Single-Stage Interleaved Double Buck-Boost Converter with High Power Factor

作者：Lin Bor Ren^*; Chao Chia Hung; Yu Ming Hung

来源：International Review of Electrical Engineering, 2011, 6(4): 1523-1530.

• Double Buck-Boost
• High Conversion Ratio
• PFC

This paper presents a single-stage interleaved double buck-boost topology to achieve the functions of high power factor, low current harmonics, reactive power compensation and output voltage regulation. Double buck-boost topology with only one MOSFET is adopted to reduce the DC bus voltage stress and achieve a high voltage step-up/down feature between the output and input sides. Thus the low voltage stress of power switches can be used in the converter. Since the discontinuous conduction mode (DCM) is adopted to control the buck-boost converter, the input line current is automatically following the mains voltage and the line current is a sinusoidal waveform and in phase with mains voltage. Compared to a conventional buck-boost converter, the proposed converter has wide duty ratio such that the lower or higher output voltage can be achieved. Experimental results, taken from a laboratory prototype rated at 200W, AC source voltage of 110V(rms), output voltage of 48V, and switching frequency of 100kHz, are presented to demonstrate the converter performance.

• 出版日期2011-8