A non‐isolated high step up interleaved boost converter with coupled inductors

SummaryThis article presents three topologies of high‐voltage gain DC–DC converter based on boost converter with three‐winding coupled inductor. Before proposing these converters, a cascade cell connection synthesizing approach was initially evaluated. This approach allowed the generation of a set of six high‐voltage gain converters. However, only three converters present good performance. Thus, to demonstrate the advantages, disadvantages, and limitations of each converter, the following characteristics are evaluated: the operating principle of the proposed converter, gain of voltage, voltage, and current stress, in addition to the factors of total voltage stress and total current stress, factors that indicate the choice of components with lower intrinsic resistances. To validate these analyses, a 250 W, 30 V/400 V prototype was implemented experimentally, reaching a maximum efficiency of 96%.

“…The TCS is a factor that sums the current stress across all components and normalized by the input current, as demonstrated in (6).…”

Section: Tcsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…Having as input parameters voltages (

V_{i}

) lower than 50 V, 1,2 such as photovoltaic panels or fuel cells, and output voltages (

V_{o}

) that reach 400 V, these converts must achieve a voltage gain lower than

M = V_{o} false/ V_{i} > 8

Section: Introductionmentioning

confidence: 99%

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Evaluation of cascaded combinations of boost DC–DC converter and three‐winding coupled inductor for high‐voltage gain applications

Loureiro

Andrade

2023

“…The suggested converter is able to provide high‐efficiency step‐up power conversion without the right‐half‐plane zero effect, while also maintaining continuous output current and low side switch driver 6 . Specifically, the authors hope to achieve these goals by lowering the cost of energy storage and increasing the energy utilization rate 7,8 . An interline dynamic voltage restorer (IDVR) comprising several DVRs coupled in series with a distribution feeder and shared a common DC source developed to alleviate long‐term voltage sags has been presented in reference [9].…”

Section: Introductionmentioning

confidence: 99%

“…6 Specifically, the authors hope to achieve these goals by lowering the cost of energy storage and increasing the energy utilization rate. 7,8 An interline dynamic voltage restorer (IDVR) comprising several DVRs coupled in series with a distribution feeder and shared a common DC source developed to alleviate long-term voltage sags has been presented in reference [9]. IDVR performance decreases with a larger load power factor, which affects IDVR compensation capacity.…”

mentioning

confidence: 99%

A novel isolated multi‐port interleaved flyback converter operated TPSL‐DVR for smallscale distribution system

2023

SummaryThis study describes a three‐phase six‐level (TPSL) inverter‐based dynamic voltage restorer (DVR) that employs a newly designed isolated multi‐port interleaved flyback converter (IMPIFC). A conventional DVR needs a big and heavy series transformer even for a three‐phase low‐voltage system, which is rated up to 400 V. Power electronic engineers have developed high‐frequency isolated DC–DC converters as a result of the introduction of advanced semiconductor devices and magnetic cores. Control and performance of a low‐voltage DVR utilizing a high‐frequency isolated DC–DC converter are discussed. In the proposed IMPIFC, the high‐frequency (25 kHz) transformer, which is smaller in size than the line‐frequency transformer, is utilized to reduce the size and to integrate multiple energy sources together. In addition, the introduction of a TPSL inverter into the configuration of DVR considerably reduces the injection of harmonic components into the distribution network. The proposed structure of DVR is named as “TPSL‐DVR.” The experimental findings of a three‐phase, three‐wire, 400 V, 50 Hz, 2kW laboratory system validate the boosting ability, feasibility, and efficiency of the system layout.

Hybrid interleaved DC‐DC step‐up converter based on coupled inductor

Alizadeh,

Babaei,

Sabahi

et al. 2023

SummaryIn this paper, a high voltage gain hybrid interleaved DC‐DC converter (HIC) with quadratic voltage gain is proposed that is suitable for renewable energy systems. The hybrid technique is used in this converter to increase the output voltage. The proposed DC‐DC converter utilizes the interleaved boost converter on the input side, and the input current is shared with a low ripple that lengthens the lifetime of the renewable power source. In addition, the proposed converter has low voltage stress across the components that can be adopted to reduce conduction losses and the cost of the elements. In addition, the proposed converter share ground between the input and output and has high efficiency. The operation modes of the proposed converter are analyzed, and its equations are calculated. Then, the elements of the proposed converter are designed in continuous conduction mode. A comprehensive comparison of the proposed converter with other recently presented existing converters is discussed to show the advantages and disadvantages of the proposed structure. Finally, to verify the performance of the proposed converter and the obtained relations, a 400 W prototype is built to demonstrate the effectiveness of the proposed converter.