This paper presents the small-signal modeling of a dual-SEPIC dc-dc converter power stage operating in continuous-conduction mode using the circuit averaging technique. The converter component parasitic resistances are taken into account. From the small-signal model, the following expressions of the converter required to design the outer voltage loop are derived: duty cycle-to-output voltage and input-to-output voltage transfer functions, input impedance, and output impedance. A design example is given and the characteristics of these transfer functions are analyzed. Simulations are performed to verify the correctness of the theoretically obtained transfer functions. The dual-SEPIC converter has four reactive components and yields transfer functions of order two. A brief discussion on this aspect is also provided.

Small-signal modeling of PWM dual-SEPIC DC-DC converter by circuit averaging technique / Ayachit, Agasthya; Reatti, Alberto; Kazimierczuk, Marian K.. - ELETTRONICO. - (2016), pp. 3606-3611. (Intervento presentato al convegno 42nd Conference of the Industrial Electronics Society, IECON 2016 tenutosi a Palazzo dei Congressi, ita nel 2016) [10.1109/IECON.2016.7793030].

Small-signal modeling of PWM dual-SEPIC DC-DC converter by circuit averaging technique

AYACHIT, AGASTHYA;REATTI, ALBERTO;
2016

Abstract

This paper presents the small-signal modeling of a dual-SEPIC dc-dc converter power stage operating in continuous-conduction mode using the circuit averaging technique. The converter component parasitic resistances are taken into account. From the small-signal model, the following expressions of the converter required to design the outer voltage loop are derived: duty cycle-to-output voltage and input-to-output voltage transfer functions, input impedance, and output impedance. A design example is given and the characteristics of these transfer functions are analyzed. Simulations are performed to verify the correctness of the theoretically obtained transfer functions. The dual-SEPIC converter has four reactive components and yields transfer functions of order two. A brief discussion on this aspect is also provided.
2016
IECON Proceedings (Industrial Electronics Conference)
42nd Conference of the Industrial Electronics Society, IECON 2016
Palazzo dei Congressi, ita
2016
Ayachit, Agasthya; Reatti, Alberto; Kazimierczuk, Marian K.
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Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/1078222
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