An Interleaved High Step-Up Converter With Coupled Inductor and Built-In Transformer Voltage Multiplier Cell Techniques

Nouri, Tohid; Vosoughi, Naser; Hosseini, Seyed Hossein; Babaei, Ebrahim; Sabahi, Mehran

doi:10.1109/tie.2018.2835420

Cited by 97 publications

(110 citation statements)

References 40 publications

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“…By applying the volt-second balance principle on L1、L2 and L3 in step-up and step-down modes, the relationship among voltages can be obtained as (14) From (12), (13) and (14), the voltage stresses across capacitors and the relationship between the output and input voltages can be obtained as…”

Section: A Voltage Gain Analysismentioning

confidence: 99%

“…Multi-level dc-dc converters greatly reduce the voltage stresses across power switches by employing more power switches, however, additional hardware as well as more complex control strategies are required [9]- [11]. Coupled-inductor dc-dc converters can achieve a high voltage gain by adjusting the turns ratio of the coupled inductors, but the order of the converter will be higher, which demands a more complicated control system [12]. In some cases, transformer leakage inductance results in voltage spikes across the power switches, requiring additional components to absorb the leakage inductance energy [13].…”

Section: Introductionmentioning

confidence: 99%

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A Switched-Capacitor Interleaved Bidirectional Converter With Wide Voltage-Gain Range for Super Capacitors in EVs

Zhang

Gao

et al. 2020

IEEE Trans. Power Electron.

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A switched-capacitor interleaved bidirectional (SCIB) dc-dc converter that combines a three-phase interleaved structure with switched-capacitor cells is proposed. The converter features a wide-voltage-gain range, low current ripple on the low voltage side, low voltage stresses across power switches, an absolute common ground between input and output, and can be easily extended into a topology family. The operating principle and power switch voltage and current stresses are analyzed in detail. An 800W prototype with a wide voltage gain range (Uhigh=400V, Ulow=30-100V) is described, demonstrating a maximum efficiency of 95.8% in the step-up mode and 95.9% in the step-down mode. Index Terms-Bidirectional dc-dc converter, electric vehicles, super capacitor, three-phase interleaved, wide voltage gain range.

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Section: A Voltage Gain Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Switched-Capacitor Interleaved Bidirectional Converter With Wide Voltage-Gain Range for Super Capacitors in EVs

Zhang

Gao

et al. 2020

IEEE Trans. Power Electron.

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“…Duty cycle to input voltage transfer functions obtained using the desired operating point given in Table 3 for the fourth-order and eighth-order dynamic models are given by (18) and (19). The frequency response of both dynamic models were compared with that obtained from the PSIM AC Sweep tool to verify its correctness.…”

Section: Validation Of the Fourth-and Eighth-order Modelsmentioning

confidence: 99%

“…In order to reduce both the input current ripple and the current stress on the switches, the interleaved technique is widely used in step-up DC-DC converters for PV systems [17][18][19][20][21]. Although such DC-DC converters offer high voltage gain, high efficiency, and reduced input current ripple, characteristics very attractive in PV applications, they have a large number of state variables (inductors and capacitors), many operation stages, some of them with time intervals given in terms of the average values of the states variables, and the coexistence of continuous and discontinuous state variables.…”

Section: Introductionmentioning

confidence: 99%

Modeling and Control Design of the Symmetrical Interleaved Coupled-Inductor-Based Boost DC-DC Converter with Clamp Circuits

et al. 2019

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The symmetrical input-interleaved high-gain DC-DC converters are suitable candidates to be used as the first stage in PV microinverters and as parallel-connected power optimizers. In both applications, they are responsible for boosting the PV module DC voltage to a higher value and executing the maximum power point tracking control. However, such converters have many state variables, some of them discontinuous, and many operation stages, which make the development of the small-signal model a challenging task. Therefore, the aim of this paper is to propose a reduced-order improved average method (ROIAM) to model the family member of converters that present characteristics such as symmetry, interleaved operation, and discontinuous state-space variables. ROIAM is applied to model for the first time in the literature the symmetrically-interleaved coupled inductor-based boost (SICIBB), leading to a fourth-order mathematical model (reduced-order model). The complete eighth-order mathematical model is developed as well to prove that the reduced-order model represents correctly the dynamic behavior of the SICIBB converter by employing only four state variables, reducing considerably the effort of the modeling. Based on the reduced-order proposed model, a closed-loop control is designed and tested in a 300-W prototype of the SICIBB converter.

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“…From isolated converter point of view, transformer based converter have great work for high boost ability [15]. To provide discontinuity in dc-dc converter isolated transformer is expected.…”

Section: (A)mentioning

confidence: 99%

A Review of Voltage Boosting Techniques for Step-up DC-DC Converter

Gautam¹,

Sharma²,

Shukla³

2019

International Journal of Innovative Research in Electrical, Ele

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Boost dc-dc converters are employed to uplifting the level of voltage from input to a higher output level. This paper presents a review on voltage boosting techniques and their application for step-up dc-dc converter. These boosting techniques comprise switched capacitor, voltage multiplier, multistage, magnetic coupling and switched inductor (voltage lifting). All of these techniques consider demerits and merits depending on applications in term of efficiency, reliability, cost, power density and complexity. Due to many difficult topologies and additional components, these techniques can not to define frame work of boost dc-dc converter. Therefore, boost dc-dc converter present clear picture to clarify several techniques of boosting up the voltage.

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An Interleaved High Step-Up Converter With Coupled Inductor and Built-In Transformer Voltage Multiplier Cell Techniques

Cited by 97 publications

References 40 publications

A Switched-Capacitor Interleaved Bidirectional Converter With Wide Voltage-Gain Range for Super Capacitors in EVs

A Switched-Capacitor Interleaved Bidirectional Converter With Wide Voltage-Gain Range for Super Capacitors in EVs

Modeling and Control Design of the Symmetrical Interleaved Coupled-Inductor-Based Boost DC-DC Converter with Clamp Circuits

A Review of Voltage Boosting Techniques for Step-up DC-DC Converter

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