Slope Compensation Design for a Peak Current-Mode Controlled Boost-Flyback Converter

Juan-Guillermo Muñoz, Guillermo Gallo, Fabiola Angulo and Gustavo Osorio
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Juan-Guillermo Muñoz: Departamento de Ingeniería Eléctrica, Electrónica y Computación, Percepción y Control Inteligente, Facultad de Ingeniería y Arquitectura, Universidad Nacional de Colombia—Sede Manizales, Bloque Q, Campus La Nubia, Manizales 170003, Colombia
Guillermo Gallo: Departamento de Ingeniería Electrónica y Telecomunicaciones, Automática, Electrónica y Ciencias Computacionales (AE&CC), Instituto Tecnológico Metropolitano, Medellín 050013, Colombia
Fabiola Angulo: Departamento de Ingeniería Eléctrica, Electrónica y Computación, Percepción y Control Inteligente, Facultad de Ingeniería y Arquitectura, Universidad Nacional de Colombia—Sede Manizales, Bloque Q, Campus La Nubia, Manizales 170003, Colombia
Gustavo Osorio: Departamento de Ingeniería Eléctrica, Electrónica y Computación, Percepción y Control Inteligente, Facultad de Ingeniería y Arquitectura, Universidad Nacional de Colombia—Sede Manizales, Bloque Q, Campus La Nubia, Manizales 170003, Colombia

Energies, 2018, vol. 11, issue 11, 1-18

Abstract: Peak current-mode control is widely used in power converters and involves the use of an external compensation ramp to suppress undesired behaviors and to enhance the stability range of the Period-1 orbit. A boost converter uses an analytical expression to find a compensation ramp; however, other more complex converters do not use such an expression, and the corresponding compensation ramp must be computed using complex mechanisms. A boost-flyback converter is a power converter with coupled inductors. In addition to its high efficiency and high voltage gains, this converter reduces voltage stress acting on semiconductor devices and thus offers many benefits as a converter. This paper presents an analytical expression for computing the value of a compensation ramp for a peak current-mode controlled boost-flyback converter using its simplified model. Formula results are compared to analytical results based on a monodromy matrix with numerical results using bifurcations diagrams and with experimental results using a lab prototype of 100 W.

Keywords: slope compensation; monodromy matrix; current mode control; boost-flyback converter (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (4)

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