Calculation of Output Voltage Ripple and Design Considerations of SEPIC Converter

Babaei, Ebrahim; Mahmoodieh, Mir Esmaeel Seyed

doi:10.1109/tie.2013.2262748

Cited by 75 publications

(56 citation statements)

References 10 publications

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“…6(c) shows current through 1 L which its maximum current is almost 1.3A. This value is in agreement with 1.24A calculated from (13). From theoretical equations, the minimum current which flows through it is -0.76A.…”

Section: Xsupporting

confidence: 83%

See 1 more Smart Citation

Bidirectional Quasi-Cuk DC/DC Converter with Reduced Voltage Stress on Capacitor and Capability of Changing the Output Polarity

Asl¹,

Sabahi²

2017

Journal of Electrical Engineering and Technology

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-In this paper, a bidirectional topology for quasi-Cuk dc/dc converter with capability of zero-voltage and zero-current-switching (ZVZCS) is proposed. The bidirectional quasi-Cuk (BQ-Cuk) converter has different voltage and current transfer ratio, reduced voltage stress on capacitor and capability of changing the output polarity in comparison with conventional bidirectional Cuk converter. In this paper, steady-state analysis of the quasi-Cuk converter with capability of ZVZCS in turn-on is presented. Then, critical inductances for transient from this operation to two new operations are calculated. Next, besides values designing of used elements, maximum and minimum value of their current and voltage are calculated. Finally, experimental results to verify the accuracy of the proposed converter in different operating modes are presented.

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Section: Xsupporting

confidence: 83%

“…Owing to the fact that in the steady-state, average current through capacitors in a switching period is zero [13], thus by using (6) we have:…”

Section: Fig 1 Power Circuit Of Zvzcs Bq-cuk Topologymentioning

confidence: 99%

Bidirectional Quasi-Cuk DC/DC Converter with Reduced Voltage Stress on Capacitor and Capability of Changing the Output Polarity

Asl¹,

Sabahi²

2017

Journal of Electrical Engineering and Technology

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“…The output capacitor is used to filter out high-order harmonic component. The greater the output capacitor, the better the filter and the larger the current through the output capacitor C 2 [18]. Generally, current through output capacitor is less than 50% I o .…”

Section: /mentioning

confidence: 99%

Half Load-Cycle Worked Dual SEPIC Single-Stage Inverter

Chen¹,

Zhang²,

Liu³

et al. 2016

Journal of Electrical Engineering and Technology

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-The two-stage converter is widely used in traditional DC/AC inverter. It has several disadvantages such as complex topology, large volume and high loss. In order to overcome these shortcomings, a novel half load-cycle worked dual SEPIC single-stage inverter, which is based on the analysis of the relationship between input and output voltages of SEPIC converters operating in the discontinuous conduction mode (DCM), is presented in this paper. The traditional single-stage inverter has remarkable advantages in small and medium power applications, but it can't realize boost DC/AC output directly. Besides one pre-boost DC/DC converter is needed between the DC source and the traditional single-stage inverter. A novel DC/AC inverter without pre-boost DC/DC converter, which is comprised of two SEPIC converters, is studied. The output of dual SEPIC converters is connected with anti-parallel and half load-cycle control is used to realize boost and buck DC/AC output directly and work properly, whatever the DC input voltage is higher or lower than the AC output voltage. The working principle, parameter selection and the control strategy of the inverters are analyzed in this paper. Simulation and experiment results verify the feasibility of the new inverter.

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“…The Minimum Value of the Output Voltage Ripple and the switch peak current are calculated in Continuous Conduction Mode (CCM) and Discontinuous Conduction Mode. The stress of the switching current and the design method were discussed to determine the equivalent inductance and capacitance of the SEPIC in [1].…”

Section: Introductionmentioning

confidence: 99%

Design of Parallel-Operated SEPIC Converters Using Coupled Inductor for Load-Sharing

Subramanian¹,

Manimaran²

2015

Journal of Power Electronics

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This study discusses the design of a parallel-operated DC-DC single-ended primary-inductor converter (SEPIC) for low-voltage application and current sharing with a constant output voltage. A coupled inductor is used for parallel-connected SEPIC topology. Generally, two separate inductors require different ripple currents, but a coupled inductor has the advantage of using the same ripple current. Furthermore, tightly coupled inductors require only half of the ripple current that separate inductors use. In this proposed work, tightly coupled inductors are used. These produce an output that is more efficient than that from separate inductors. Two SEPICs are also connected in parallel using the coupled inductors with a single common controller. An analog control circuit is designed to generate pulse width modulation (PWM) signals and to fulfill the closed-loop control function. A stable output current-sharing strategy is proposed in this system. An experimental setup is developed for a 18.5 V, 60 W parallel SEPIC (PSEPIC) converter, and the results are verified. Results indicate that the PSEPIC provides good response for the variation of input voltage and sudden change in load.

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Calculation of Output Voltage Ripple and Design Considerations of SEPIC Converter

Cited by 75 publications

References 10 publications

Bidirectional Quasi-Cuk DC/DC Converter with Reduced Voltage Stress on Capacitor and Capability of Changing the Output Polarity

Bidirectional Quasi-Cuk DC/DC Converter with Reduced Voltage Stress on Capacitor and Capability of Changing the Output Polarity

Half Load-Cycle Worked Dual SEPIC Single-Stage Inverter

Design of Parallel-Operated SEPIC Converters Using Coupled Inductor for Load-Sharing

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