A PWM Plus Phase-Shift Control for Four-Switch Buck-Boost Converter to Achieve ZVS in Full Input Voltage and Load Range
Jie Fang, Xinbo Ruan, Xinze Huang, Renxi Dong, Xiaojian Wu, Jianyu Lan
Abstract
Four-switch buck-boost (FSBB) converter features positive output voltage and low voltage stress of power switches. In this article, a pulsewidth modulation plus phase-shift control scheme is proposed to achieve zero-voltage-switching for all the power switches in full input voltage and load range and minimize the inductor current ripple and root mean square (RMS) value. The implementation of the proposed control scheme is given. A prototype of a 500-W FSBB converter is built and tested in the lab, and the experimental results verify the effectiveness of the proposed control scheme.
Topics & Concepts
InductorPulse-width modulationBuck converterControl theory (sociology)VoltageRippleBoost converterRoot mean squareBuck–boost converterPower (physics)Computer scienceElectronic engineeringEngineeringElectrical engineeringPhysicsControl (management)Quantum mechanicsArtificial intelligenceAdvanced DC-DC ConvertersMultilevel Inverters and ConvertersMicrogrid Control and Optimization