Interleaved SEPIC Power Factor Preregulator Using Coupled Inductors In Discontinuous Conduction Mode With Wide Output Voltage

Shi, Chuan; Khaligh, Alireza; Wang, Haoyu

doi:10.1109/tia.2016.2553650

Cited by 63 publications

(15 citation statements)

References 22 publications

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“…The benefits of applying sliding-mode control in the proposed converter with the mentioned constraints can be observed in terms of simple implementation, fast and robust response, and general improvement of quality indicators such as high power factor (>0.98) and reduced THD (<5%). These quality indicators for the entire range of operation of the converter are above the quality levels reported before for the same topology or for modified versions of the basic circuit [14][15][16][17][21][22][23][24][25][26][27][28].…”

Section: Comparison With Previous Resultsmentioning

confidence: 47%

Sliding Mode Control of the Isolated Bridgeless SEPIC High Power Factor Rectifier Interfacing an AC Source with a LVDC Distribution Bus

et al. 2019

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This paper deals with the analysis and design of a sliding mode-based controller to obtain high power factor (HPF) in the bridgeless isolated version of the single ended primary inductor converter (SEPIC) operating as a single-phase rectifier. In the work reported here, the converter is used as a unidirectional isolated interface between an AC source and a low voltage direct current (LVDC) distribution bus. The sliding-mode control is used to ensure the tracking of a high quality current reference at the input side, which is obtained from a sine waveform generator synchronized with the grid. The feasibility of the proposal is validated using simulation and experimental results, both of them confirming a reliable operation and showing good static and dynamic performances.

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Section: Comparison With Previous Resultsmentioning

confidence: 47%

Sliding Mode Control of the Isolated Bridgeless SEPIC High Power Factor Rectifier Interfacing an AC Source with a LVDC Distribution Bus

et al. 2019

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“…Unlike the other two converters, in SEPIC, the inductor can be replaced by a transformer without a significant increase in its dimensions [31]. Reference [32] proposes to use interleaved SEPIC topology to decrease switching power losses with high quality input current. Such a configuration allows a significantly reduced number of elements and volume of the charging system- Figure 3b.…”

Section: Proposed Charger Conceptmentioning

confidence: 99%

“…Therefore, SEPIC operating in discontinuous conduction mode (DCM) [27][28][29][30][31] The drawback can be attributed to voltage and rms (root-mean square) current stresses on semiconductors, which are higher than the ones of the comparable boost-type topology. Interleaving can be used to reduce the stresses, improve the input current ripple and increase the power level [32].…”

Section: Proposed Charger Conceptmentioning

confidence: 99%

Modular Self-Balancing Battery Charger Concept for Cost-Effective Power-Assist Wheelchairs

et al. 2019

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The paper deals with a power charger capable of quick simultaneous charging of several unevenly discharged batteries. The charger is designed for use in conjunction with a recently developed power-assist wheelchair composed of two armrest modules associated with wheels—each with its own motor, driver and battery. Uneven discharge of the batteries is very possible in this application. Taking into account the charging power and energy comparable with the most powerful household electrical devices, the refreshing of these batteries and integration of the entire power supply chain into the household grid become a topical and challenging task. Solving of this task requires a special charger that has several channels and can unevenly apply charging power to these channels. At the same time, the charger must not generate current harmonics or reactive power, must operate with good efficiency and satisfy size constraints. In the given research, a configuration of several interleaved isolated single-ended primary-inductor converters is studied. The synthesized mathematical model of the proposed charger provides data about its static and dynamic characteristics while its experimental investigation focuses on operation details (power losses, control features etc.). The obtained results prove that the proposed concept complies with the above-mentioned requirements and can be applied in the discussed application.

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“…In time, SEPIC converters have attracted much attention from modern applications, especially those involving renewable energy [6] such as LED (Light Emitting Diode) [7,8], fuel cells [9], battery chargers [10], photovoltaics [11] and eolic systems [12,13].…”

Section: Introductionmentioning

confidence: 99%

Adaptive and Nonlinear Control Techniques Applied to SEPIC Converter in DC-DC, PFC, CCM and DCM Modes Using HIL Simulation

et al. 2018

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Abstract:In this paper, we propose adaptive nonlinear controllers for the Single-Ended Primary Inductance Converter (SEPIC). We also consider four distinct situations: AC-DC, DC-DC, Continuous Conduction Mode (CCM) and Discontinuous Conduction Mode (DCM). A comparative analysis between classic linear and nonlinear approaches to regulate the control loop is made. Three adaptive nonlinear control laws are designed: Feedback Linearization Control (FLC), Passivity-Based Control (PBC) and Interconnection and Damping Assignment Passivity-Based Control (IDAPBC). In order to compare the performance of these control techniques, numerical simulations were made in Software and Hardware in the Loop (HIL) for nominal conditions and operation disturbances. We recommend adaptive controllers for the two different situations: Adaptive Passivity-Based Feedback Linearization Control (APBFLC) for the PFC (Power Factor Correction) AC-DC system and IDAPBC-BB (IDAPBC Based on Boost converter) for the regulator DC-DC system.

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Interleaved SEPIC Power Factor Preregulator Using Coupled Inductors In Discontinuous Conduction Mode With Wide Output Voltage

Cited by 63 publications

References 22 publications

Sliding Mode Control of the Isolated Bridgeless SEPIC High Power Factor Rectifier Interfacing an AC Source with a LVDC Distribution Bus

Sliding Mode Control of the Isolated Bridgeless SEPIC High Power Factor Rectifier Interfacing an AC Source with a LVDC Distribution Bus

Modular Self-Balancing Battery Charger Concept for Cost-Effective Power-Assist Wheelchairs

Adaptive and Nonlinear Control Techniques Applied to SEPIC Converter in DC-DC, PFC, CCM and DCM Modes Using HIL Simulation

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