Modeling and performance evaluation of a DC/DC SEPIC converter

Moussa, W.M.

doi:10.1109/apec.1995.469096

Cited by 17 publications

(8 citation statements)

References 1 publication

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“…The SEPIC is an acronym of (single ended primary inductor converter), which is a DC-DC converter capable to operate as boost or buck mode [9], that offer the possibility to raise or decrease the voltage at the output [10]. In addition the SEPIC converter makes the PV system operate at its maximum power point with 'weak current ripples [11].…”

Section: Modelling Of the Sepic Convertermentioning

confidence: 99%

Fast and Efficient Maximum Power Point Tracking Controller for Photovoltaic Modules

Chennoufi¹,

Ferfra²

2020

Adv. sci. technol. eng. syst. j.

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This paper presents an efficient Maximum Power Point Tracking (MPPT) controller for photovoltaic modules. The MPPT technique consists of a combination between backstepping controller and artificial neural network (ANN).The (ANN) has been employed to generate the optimum voltage, which corresponds to the maximum power voltage delivered by photovoltaic modules, while the backstepping controller is developed to track the generated voltage, by computing the duty cycle of the Single Ended Primary Inductor Converter (SEPIC). The control of the boost converter is based on Lyapunov stability analysis, and an integral action is added to increase system robustness. In order to prove the accuracy of the developed control a comparison between the proposed method and sliding mode was carried out. In addition the stability was evaluated under sudden variation of environmental conditions. The simulation was carried out in MATLAB software, the results shows that the proposed controller tracks the reference voltage within 25 ms, in addition the systems reacts to sudden environments change with no oscillations, which demonstrate the robustness of the proposed method.

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Section: Modelling Of the Sepic Convertermentioning

confidence: 99%

Fast and Efficient Maximum Power Point Tracking Controller for Photovoltaic Modules

Chennoufi¹,

Ferfra²

2020

Adv. sci. technol. eng. syst. j.

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“…The model in [5,6] is capable of predicting the subharmonic instability of the current loop causing 180˚ phase reversal at half the switching frequency. [8] performs small signal analysis of SEPIC with peak current-mode control in CCM using the pwm-switch model only on a numerical example without providing equations of the control to output voltage transfer function and its zeros and poles in symbolic form. [9] provides small signal control to output voltage transfer function of SEPIC in symbolic form by state space averaging technique including the para- Control to output voltage transfer function of SEPIC in symbolic form is not reported in the literature with constant switching frequency peak current-mode control based on the pwm-switch model including the parasitic resistances of all four reactive elements in the topology and will be presented in this paper.…”

Section: Introductionmentioning

confidence: 99%

Tepe Akım Kontrol Modunda Çalışan SEPIC DA/DA Dönüştürücünün Tam Çözümlü Sembolik Zayıf Sinyal Analizi

Cengelci

2020

Sakarya University Journal of Science

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Full order small signal analysis of peak-current controlled non-isolated Single Ended Primary Inductor Converter (SEPIC) is presented by utilizing pwm-switch model in Continuous Conduction Mode (CCM). The analysis provides control to output voltage transfer function together with its zeros and poles in symbolic form taking into account parasitic resistances of all four reactive components in the SEPIC topology. The resultant transfer function is with 4th order numerator and 5th order denominator, which necessitates approximation in deriving formulas of zeros and poles in symbolic form. Symbolically derived transfer function of the SEPIC is validated on two different numerical examples, one with operating in step down mode and another operating in step up mode, by frequency domain PSpice simulations on average circuit models and by time domain LTspice simulations on switching models. The mathematical analysis, PSpice and LTspice simulations, and measurement results of control to output voltage transfer function of SEPIC agree very well proving that the symbolic control to output voltage transfer function of SEPIC together with its zeros and poles are successfully derived.

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“…Many techniques are used to derive average models. State-space average method is the best well known of these techniques [9].…”

Section: Introductionmentioning

confidence: 99%

Non-Dissipative Snubber Circuit Based SEPIC Converter for High Static Gain Applications

Singh*,

Sahay

2020

IJRTE

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In this paper different non-dissipative snubber circuits in which RCD snubber circuit, CD snubber circuit, LCD snubber circuit and proposed LCD snubber circuit are implemented in SEPIC converter to obtain high static gain. The snubber circuit is used for the protection of the power semiconductor devices. The requirement of high static gain is necessary in different applications of dc-dc converters, so that efficient operation of the system can be obtained. The basic idea of the snubber circuit used in this paper is to reduce the turn-on and turn-off losses at the time of switching processes. For this purpose, inductor and capacitor combination is required so that during turn-on process, sudden change in current through semiconductor device which is used as a switch, can be reduced. Similarly, during turn-off process, sudden change in voltage across switch can be minimized. Here, different snubber circuit based SEPIC converters are analyzed with the help of MATLAB simulink and results of output voltages and currents are obtained. The results are summarized which clearly shows that the proposed SEPIC converter has high static gain in comparison of the others topologies. Hence non-dissipative snubber circuit based SEPIC converter provides high efficiency than the other modifications in SEPIC converter.

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Modeling and performance evaluation of a DC/DC SEPIC converter

Cited by 17 publications

References 1 publication

Fast and Efficient Maximum Power Point Tracking Controller for Photovoltaic Modules

Fast and Efficient Maximum Power Point Tracking Controller for Photovoltaic Modules

Tepe Akım Kontrol Modunda Çalışan SEPIC DA/DA Dönüştürücünün Tam Çözümlü Sembolik Zayıf Sinyal Analizi

Non-Dissipative Snubber Circuit Based SEPIC Converter for High Static Gain Applications

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