Improved power-quality bridgeless-converter-based multiple-output smps

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Engineering

IMPROVED-POWER-QUALITY BRIDGELESS-CONVERTER-BASED MULTIPLE-
OUTPUT SMPS
ABSTRACT
This paper deals with the design, analysis, simulation, and development of a power-
factor-correction (PFC) multiple output switched-mode power supply (SMPS) using a bridgeless
buck–boost converter at the front end. Single-phase ac supply is fed to a pair of back-to-back-
connected buck–boost converters to eliminate the diode bridge rectifier, which results in
reduction of conduction losses and power quality improvement at the frontend. The operation of
the bridgeless buck–boost converter in discontinuous conduction mode ensures inherent PFC
operation and reduces complexity in control. The performance of the proposed multiple-output
SMPS is evaluated under varying input voltages and loads by simulating this circuit in
MATLAB/Simulink environment, and the results obtained through simulation are validated
experimentally on a developed prototype. Both simulation and experimental results demonstrate
the improved performance of the proposed SMPS.

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Improved power-quality bridgeless-converter-based multiple-output smps

1. IMPROVED-POWER-QUALITY BRIDGELESS-CONVERTER-BASED MULTIPLE- OUTPUT SMPS ABSTRACT This paper deals with the design, analysis, simulation, and development of a power- factor-correction (PFC) multiple output switched-mode power supply (SMPS) using a bridgeless buck–boost converter at the front end. Single-phase ac supply is fed to a pair of back-to-back- connected buck–boost converters to eliminate the diode bridge rectifier, which results in reduction of conduction losses and power quality improvement at the frontend. The operation of the bridgeless buck–boost converter in discontinuous conduction mode ensures inherent PFC operation and reduces complexity in control. The performance of the proposed multiple-output SMPS is evaluated under varying input voltages and loads by simulating this circuit in MATLAB/Simulink environment, and the results obtained through simulation are validated experimentally on a developed prototype. Both simulation and experimental results demonstrate the improved performance of the proposed SMPS.

Improved power-quality bridgeless-converter-based multiple-output smps

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