High step‐up Z‐source DC–DC converter with coupled inductors and switched capacitor cell

Poorali, Behzad; Torkan, Arash; Adib, Ehsan

doi:10.1049/iet-pel.2014.0200

Cited by 62 publications

(52 citation statements)

References 22 publications

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“…Moreover, the adverse effect of leakage inductance caused by coupled-inductors is reduced significantly in Δ-source converter. In [19], the other Z-source high step-up converter is presented by utilizing two core for two sets of coupled inductors. Although the voltage conversion ratio increased in the mentioned proposed converter in [19], the core loss of the ferrite reduced the efficiency of the converter.…”

Section: Introductionmentioning

confidence: 99%

Modified Cascaded Z-Source High Step-Up Boost Converter

Salehi¹,

García²,

Quesada³

2020

Preprint

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To improve the voltage gain of step-up converters, cascaded technique is considered as a possible solution in this paper. By considering the concept of cascading two Z-source networks in a conventional boost converter, the converter takes the advantages of both impedance source and cascaded converters. However, by applying some modifications, the proposed converter provides high voltage gain while the voltage stress of switch and diodes are still low. Moreover, the low input current ripple of the converter makes it absolutely appropriate for photovoltaic applications in order to expand the lifetime of PV panels. After analyzing the operation principles of the proposed converter, simulation and experimental results of a 100W prototype are presented to verify the proposed converter performance.

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Section: Introductionmentioning

confidence: 99%

Modified Cascaded Z-Source High Step-Up Boost Converter

Salehi¹,

García²,

Quesada³

2020

Preprint

View full text Add to dashboard Cite

show abstract

“…In these applications, a high step-up converter is required to adapt the low voltage level of batteries or photovoltaic cells to the high-voltage DC bus [7,8]. In order to perform this voltage conversion, various isolated DC-DC converters are presented in which high voltage gain can be achieved by increasing the transformer turns ratio [9,10].…”

Section: Introductionmentioning

confidence: 99%

A floating-output interleaved boost DC–DC converter with high step-up gain

Kianpour

Shahgholian

2017

Automatika

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A new interleaved boost converter with high step-up gain is presented in this paper. The proposed topology integrates coupled inductors and floating-output capacitors technique into interleaved boost converter to provide high step-up voltage gain without extreme duty cycle. The voltage stress on the power switches and diodes is very low, so low-cost and highperformance semiconductor devices can be employed. Also, the reverse recovery problem of all diodes is mitigated and zero-current-switching (ZCS) turn-on operation of the main switches is established as well. In addition, the passive clamp circuits are employed to suppress the voltage spikes across the main switches during turn-off instants. The operating principles and steady-state analysis of the proposed converter in continuous condition mode are explained. Finally, the simulation and experimental results of prototype 25-400 V circuit with 200 W output power are provided to verify the performance of presented topology.

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“…Converters utilizing coupled inductors have many advantages, such as low output current and voltage ripple, fast load transient and low output decoupling capacitance [11]. Recently, many new topologies based on coupled inductors are proposed [12,13,14,15].…”

Section: Introductionmentioning

confidence: 99%

A novel coupled inductor Z-source three-level inverter

Wang

Liu

2017

IEICE Electron. Express

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A novel Z-source three-level inverter based on coupled inductors is proposed. The two inductors in traditional Z-source impedance network are replaced by two coupled inductors. The operating principle is described and the equations of boost factor and voltage stresses are deduced. Comparisons are made with other Z-source three-level inverters, especially the multicell switched inductor Z-source three-level inverter. The two topologies have same boost factor if a specific condition is met, but the proposed inverter uses less components and therefore the reliability is improved. SVPWM method for conventional three-level NPC inverter is easy to apply to the novel inverter after a simple modification. Simulations are conducted to verify the theoretical analysis.

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High step‐up Z‐source DC–DC converter with coupled inductors and switched capacitor cell

Cited by 62 publications

References 22 publications

Modified Cascaded Z-Source High Step-Up Boost Converter

Modified Cascaded Z-Source High Step-Up Boost Converter

A floating-output interleaved boost DC–DC converter with high step-up gain

A novel coupled inductor Z-source three-level inverter

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