A new digital control strategy of boost PFC at high-line light-load condition

Design, Analysis, and Implementation of an Equalizer Circuit for the Elimination of Voltage Imbalance in a Half-Bridge Boost Converter with Power Factor Correction

“…Power Factor General aspects about power quality, power factor and harmonic distortion in electrical systems [1][2][3][4][5][6][7] Converters PFC Provision of a general description of PFC converters, cascade buck-boost,Ćuk converter, flyback circuit, and boost converter [6,[8][9][10][10][11][12] Fuzzy logic control PFC converter control using fuzzy logic in the application to supply power to a fed brushless DC motor [13] Predictive control Predictive control application for PFC converters, the system calculates the future value of the duty cycle [11,14] Digital Controller It shows a brief review of different applications of converters using digital controllers [15][16][17][18][19][20] LED applications Application of PFC converters for LED lighting using full-bridge and half-bridge rectifiers [21][22][23] Photovoltaic applications Description of the application of PFC converters in photovoltaic systems [17,24] Voltage Imbalance Describe main works related to the imbalance in half-bridge rectifiers. This issue is addressed in this work [25][26][27][28] Power Factor Correction This article focuses on showing that the proposed topology allows the reduction of the capacitor imbalance in a half-bridge boost converter.…”

“…therefore, the average of each of the waveforms is obtained, at the terminals of S 1 and D 2 , substituting ( 16) in ( 6), ( 8), (10), and (12), is obtained:…”

“…Different converters with PFC have been implemented evaluating the efficiency under load conditions, such as the cascade buck-boost [8],Ćuk converter [9], flyback circuit [10] and boost converter [11]. In this regard, the boost converter has greater efficiency as it can operate in a wide range of loads in continuous and discontinuous mode [12]. Two of the most widely used variations of this converter are half-bridge and full-bridge topology.…”

Diseño e implementación de un controlador digital tipo PID con pre-compensación para un Boost PFC de medio puente

“…Se han implementado distintas configuraciones de CFP en los que se ha evaluado su eficiencia bajo condiciones de carga, como el buck-boost en cascada [8], convertidor Cuk [9], circuito Flyback [10] y el convertidor Boost [11] [12], siendo este último el que presenta mayor eficiencia, al tener la capacidad de operar en un amplio rango de cargas tanto en modo continuo como en modo discontinuo [13]. Adicionalmente, existen diversos tipos de circuitos Boost CFP que varían en la cantidad de elementos usados y la disposición de estos, pero principalmente se diferencian por los métodos de control, los modelos de pequeña señal y la cantidad de semiconductores que influyen directamente en otros aspectos del diseño [14].…”