Bridgeless Buck-Boost PFC Rectifier with Positive Output Voltage

Author:

Hwu Kuo-IngORCID,Tai Yu-Kun,He Yu-Ping

Abstract

A bridgeless buck-boost power-factor-correction (PFC) rectifier with positive output voltage is proposed herein. This PFC rectifier operates in the discontinuous conduction mode (DCM). Owing to the DCM, a good performance on PF is easily achieved as well as no reverse recovery currents being generated from the diodes. By means of output voltage sensing along with the traditional voltage-follower control, a proper control force is created to drive the switches. By doing so, not only the output voltage is stably controlled at a given value, but also the input current tracks the input voltage as tightly as possible. In addition, the accompanying harmonic distortion meets the requirements of the IEC6100-3-2 Class C harmonics standard, and accordingly, the proposed rectifier is suitable for the AC-DC LED driver. Finally, via mathematical deductions and experimental results, the effectiveness of the proposed bridgeless buck-boost PFC rectifier is verified.

Funder

The Ministry of Science and Technology, Taiwan

Publisher

MDPI AG

Subject

Fluid Flow and Transfer Processes,Computer Science Applications,Process Chemistry and Technology,General Engineering,Instrumentation,General Materials Science

Reference18 articles.

1. Electromagnetic Compatibility (EMC)-Part3-2: Limits–Limits for Harmonic Current Emissions (Equipment Input Current ≤ 16 A Per Phase),2005

2. A novel passive waveshaping method for single-phase diode rectifiers

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