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Open AccessArticle

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

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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
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Departamento de Ingeniería Electrónica y Telecomunicaciones, Automática, Electrónica y Ciencias Computacionales (AE&CC), Instituto Tecnológico Metropolitano, Medellín 050013, Colombia
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Author to whom correspondence should be addressed.
Energies 2018, 11(11), 3000; https://doi.org/10.3390/en11113000
Received: 27 September 2018 / Revised: 28 October 2018 / Accepted: 29 October 2018 / Published: 1 November 2018
(This article belongs to the Special Issue Control and Nonlinear Dynamics on Energy Conversion Systems)
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. View Full-Text
Keywords: slope compensation; monodromy matrix; current mode control; boost-flyback converter slope compensation; monodromy matrix; current mode control; boost-flyback converter
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MDPI and ACS Style

Muñoz, J.-G.; Gallo, G.; Angulo, F.; Osorio, G. Slope Compensation Design for a Peak Current-Mode Controlled Boost-Flyback Converter. Energies 2018, 11, 3000.

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