Single-stage, single-phase, ac–dc buck–boost converter for low-voltage applications

Ibrahim Abdelsalam, Grain P Adam, Barry W Williams, Derrick Holliday
2014 IET Power Electronics  
2014) Single-stage, single-phase, ac-dc buck-boost converter for low-voltage applications. IET Power Electronics, 7 ( Abstract The suitability of a single-stage ac-dc buck-boost converter for low-voltage applications is investigated. Indepth discussion and analysis of the converter's operating principle, basic relationships that govern converter steadystate operation, and details of the necessary control structures needed to comply with the grid code are provided. The validity of the proposed
more » ... stem is confirmed using PSCAD/EMTDC simulations, and is substantiated experimentally. The buck-boost converter under investigation has good dynamic performance in both buck and boosts modes, and ensures near unity input power factor over the full operating range, whilst having fewer devices and passive elements than other published versions of the buck-boost converter. Time (10ms/div) Voltage (40V/div) ;current(10A/div) Time (25ms/div) Voltage (40V/div) ;current(10A/div) Voltage (40V/div) ;current(10A/div) Time (25ms/div) Voltage Current (250mA/div) Time (10ms/div) Voltage (40V/div) Current (1A/div) Time (10ms/div) Voltage (40V/div) Current (2A/div) Time (10ms/div) Voltage (40V/div) Current (5A/div) Time (10ms/div) This paper is a postprint of a paper submitted to and accepted for publication in IET Power Electronics and is subject to Institution of Engineering and Technology Copyright.
doi:10.1049/iet-pel.2013.0754 fatcat:zy2fcgj37festlsxsxfu3croru