A single-Capacitor Turn-off Snubber for Interleaved Boost Converter with Coupled Inductor

Tseng, S.-Y.; Shiang, J.-Z.; Su, Yu-Chia

doi:10.1109/peds.2007.4487701

Cited by 7 publications

(4 citation statements)

References 6 publications

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“…Although the extreme duty cycle is avoided in the aforementioned converters, however, the input current ripple is large because of single-phase operation, which decreases the renewable power source life time and limits their application for high-current and high-power applications. Interleaving technique can be used to minimise input power source current ripple [19][20][21][22][23][24][25][26][27]. The power is shared between the phases and consequently because of the reduction of losses, the conversion efficiency is maintained at high levels even for high-power applications.…”

Section: Introductionmentioning

confidence: 99%

“…The power is shared between the phases and consequently because of the reduction of losses, the conversion efficiency is maintained at high levels even for high-power applications. The proposed converter in [19] uses an resistor-capacitor-diode network to reduce the switching loss during turn-off transition. However, the duty cycle of power switches should be less than 0.5, which is a great limitation for increasing of voltage gain.…”

Section: Introductionmentioning

confidence: 99%

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Interleaved high step‐up DC–DC converter based on three‐winding high‐frequency coupled inductor and voltage multiplier cell

Nouri

Hosseini

Babaei

et al. 2015

IET Power Electronics

140

145

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This study presents an interleaved high step-up DC-DC converter based on three-winding high-frequency coupled inductor and voltage multiplier cell (VMC) techniques. The primary and secondary windings of each coupled inductor are inserted in the same phase and the third winding is inserted in the other phase. The VMC in each phase consists of two diodes, two capacitors, the secondary winding of the same phase coupled inductor and the third winding of the other phase coupled inductor. The voltage gain is increased and the output voltage is clamped across the capacitors of the VMCs. Then, the voltage across the power metal oxide semiconductor field effect transistors (MOSFETs) is decreased. The leakage inductance of the coupled inductors controls the output diode falling rate, which alleviates reverse recovery problems. The power MOSFETs are turned-on under zero current switching that helps to conversion efficiency improvement. Three modes of operation named as continuous conduction mode, discontinuous conduction mode and boundary conduction mode are investigated for the proposed converter. The carried mathematical analysis and satisfying operation of the proposed converter are verified via experimental results of an 870 W 60 V-input to 590 V-output laboratory prototype with 95.2% conversion efficiency.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Interleaved high step‐up DC–DC converter based on three‐winding high‐frequency coupled inductor and voltage multiplier cell

Nouri

Hosseini

Babaei

et al. 2015

IET Power Electronics

140

145

View full text Add to dashboard Cite

show abstract

“…In Zhao et al (2012) and Tseng et al's. (2007) studies, the technique is introduced for voltage gain increasing by using coupled magnetics (i.e.…”

Section: Introductionmentioning

confidence: 98%

A novel high step-up non-isolated DC-DC converter using VL technique for perovskite PV cells

Afshar

Alemi

2021

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Purpose At first, the organic/inorganic and hybrid PV materials by their electrical model are described. Then the proposed converter topology, circuit analysis and various operating modes of converter according to on/off timing of switches are investigated. The current and voltage in the converter components are illustrated and the voltage gain and switching stress of proposed converter are presented. Finally, to show the effectiveness of the proposed converter, the power loss analysis is provided and the simulation is done in PSIM software. In the last section, the advantages of the proposed topology of higher efficiency by lower number of components in compare with other conventional topologies are presented. Design/methodology/approach In this paper, an improved topology of DC-DC converter based on VL technique is proposed for Perovskite Solar cells (PeSCs). The PeSCs attracted a lot of interest due to their potential in combining the advantages of both organic and inorganic components. The proposed converter by using fewer components and higher output voltage generation in compare with conventional ones could be a good candidate for PeSCs due to lower efficiency of this cells. The performance of converter is expressed in continuous conduction mode (CCM) and discontinuous conduction mode (DCM), and the boundary conditions for the proposed converter is presented. Findings By using VL technique, this converter is used to boost the lower output voltage levels of PeSCs for grid connection. The PV cell output voltage is increased from 24.5 V to 106 V by proposed converter topology. The step-by-step voltage increasing by charging and discharging of inductor and capacitor is used for boosting the input voltage. By comparing other converters, there is no design complexity in the proposed converter structure, and the power loss is much reduced which increases the converter efficiency. On the other hand, due to using lower number of elements of energy storage elements such as inductors and capacitors, the converter cost is also diminished. Therefore, the design topology simplicity which result simple control algorithm and lower number of components which diminish the system cost by appropriate voltage boosting capability are the main advantages of this proposed topology for new PeSCs which don’t have enough efficiency in compare with old Si PV cells. Originality/value In this paper, by using the lower number of components a new structure of DC-DC converter based on the VL technique is proposed. The advantages of this converter such as the simplicity, easier control and high voltage gain by lower power loss, could make this converter a good candidate for new PeSCs where the system whole efficiency will be a critical point to have the unique properties of this new materials in lower loss.

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“…It can improve conversion efficiency of the boost converter at light load, significantly. Due to the complexity of circuit structures shown in Figures 2 and 3, they are, respectively, simplified by [37] and [38] and are shown in Figures 4(a) and 4(b). In this paper, performance comparisons between the discussed converters with the single-capacitor snubber and with boost type snubber are proposed.…”

Section: Introductionmentioning

confidence: 99%

Performances of an Interleaved High Step-Up Converter with Different Soft-Switching Snubbers for PV Energy Conversion Applications

Tseng

Wang

Hsu

2013

International Journal of Photoenergy

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This paper proposes an interleaved high step-up converter with different soft-switching snubbers for PV energy conversion applications. For the high step-up converter, interleaved and coupled-inductor technologies are used to reduce output ripple current and increase output power level. Simultaneously, two types of snubbers, a single-capacitor snubber and boost type snubber, are introduced separately into the discussed converters for comparing their performances of conversion efficiency and switching losses. For drawing maximum power from the PV arrays, a perturbation-and-observation method realized with the microcontroller is adopted to achieve maximum power point tracking (MPPT) algorithm and power regulating scheme. Finally, two prototypes of the interleaved coupled-inductor boost converter with a single-capacitor snubber and with boost type snubber are implemented, respectively. The experimental results obtained are used to verify and compare the performances and feasibilities of the discussed converters with different snubbers in PV conversion applications. The experimental results show that the proposed system is suitable for PV energy conversion applications when the duty ratios of switches of the converter are less than 0.5.

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A single-Capacitor Turn-off Snubber for Interleaved Boost Converter with Coupled Inductor

Cited by 7 publications

References 6 publications

Interleaved high step‐up DC–DC converter based on three‐winding high‐frequency coupled inductor and voltage multiplier cell

Interleaved high step‐up DC–DC converter based on three‐winding high‐frequency coupled inductor and voltage multiplier cell

A novel high step-up non-isolated DC-DC converter using VL technique for perovskite PV cells

Performances of an Interleaved High Step-Up Converter with Different Soft-Switching Snubbers for PV Energy Conversion Applications

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