New Structure of Single-Switch Ultra-High-Gain DC/DC Converter for Renewable Energy Applications

Hasanpour, Sara

doi:10.1109/tpel.2022.3172311

Cited by 31 publications

(10 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The power generated by these sources is often at a lower voltage as compared to the grid operating voltage hence DC-DC converters [1] are employed to step up or step down the voltages at the grid operating level and at a specified bus voltage to meet the need of the load voltage respectively. The DC voltage is available after rectification it needs to be boosted up to be used for various practical applications like solar PV system applications [2,3], switch-mode power supplies (SMPS), electric vehicles, and fuel-cell applications [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Implementation and reliability analysis of a new non‐isolated quadratic buck–boost converter using improved Markov modelling

Malick

Zaid

Ahmad

et al. 2023

IET Renewable Power Gen

View full text Add to dashboard Cite

Here, a new buck–boost converter with reliability analysis is proposed. The converter has utilized a new voltage multiplier cell at the input side to boost the output voltage. It has a continuous input current with a wide range of duty cycle operations. The converter achieves unity gain at 26.8% duty cycle and can also operate in continuous and discontinuous conduction modes in buck and boost modes. The detailed reliability analysis of the proposed converter using improved Markov modelling is also presented by considering both open circuit and short circuit faults across the semiconductor devices. The variation of reliability and the mean time to failure (MTTF) with different converter parameters like the duty cycle and the input voltage is also discussed here. The hardware results of the developed prototype converter are also presented here at varying duty ratios. The power loss analysis and comparison of the converter with other newly proposed buck–boost topologies show the advantages of the proposed converter. For checking the stability of the converter, the state space model of the converter is also discussed in detail of the proposed converter.

show abstract

Section: Introductionmentioning

confidence: 99%

Implementation and reliability analysis of a new non‐isolated quadratic buck–boost converter using improved Markov modelling

Malick

Zaid

Ahmad

et al. 2023

IET Renewable Power Gen

View full text Add to dashboard Cite

show abstract

“…So far, many high step-up converters have been introduced to increase the low voltage level of renewable DC resources. To enhance the voltage gains, voltage boosting methods, including voltage lift, switched capacitors/inductors, voltage multipliers, and cascaded connections, are often used [1][2][3][4]. However, most of these structures suffer from hardswitching performance and large component count, which compromise the efficiency and power density of the converter.…”

Section: Introductionmentioning

confidence: 99%

A new soft‐switching high gain DC/DC converter with bipolar outputs

Hasanpour,

Siwakoti,

Blaabjerg

2023

IET Power Electronics

Self Cite

View full text Add to dashboard Cite

This paper introduces a new single‐input multi‐output step‐up DC/DC converter with soft‐switching performance and low input current for renewable energy applications. The proposed topology uses a three‐winding coupled‐inductor (TWCI) and voltage multiplier circuits to achieve high voltage gains. The bipolar output voltages of the proposed converter can be varied independently by tuning the turns ratios of the TWCI. Due to the semi‐trans‐inverse specification of the suggested topology, high voltage gains can be obtained under a lower number of turns ratio in the magnetic device. Furthermore, a regenerative passive clamp technique mitigates the voltage stress on the single power switch. Additionally, the power dissipations are further reduced by considering a resonant tank in the circuit. In the converter, the parasitic leakage inductances of the TWCI windings help to provide the soft‐switching conditions for the switch and also to eliminate the reverse‐recovery loss for all converter diodes. The operating mode of the presented converter has been introduced and the steady state, along with the main operating equations have also been derived. Finally, the theoretical analysis is verified by a sample prototype 235 W at the input voltage 25 V and outputs of 200 V and −200 V.

show abstract

“…To reduce the input current ripple the primary winding of the CI is inserted in a SC cell and the inductor is maintained at the input side of the converter [34]. The CI and VMC can be also integrated with quadratic [35][36][37], Quasi Z-source [38], and single-ended primary-inductor converter (SEPIC) [39,40] converters to improve the voltage gain.…”

Section: Introductionmentioning

confidence: 99%

“…Through the dual switches concept and implementation of the CI VMC, the advantages such as high voltage gain, low voltage stresses across switches, and distributed current stresses between MOS-FETs are achieved. The proposed converter achieves higher voltage gain, lower voltage stress across the switches and better conversion efficiency in comparison with its main competitors in [38][39][40]. This paper is organized as follows.…”

Section: Introductionmentioning

confidence: 99%

A dual switches high step‐up DC–DC converter with low voltage stresses across switches

Radmehr

Nouri

Shaneh

2022

IET Renewable Power Gen

View full text Add to dashboard Cite

A dual switches high step-up DC-DC converter with coupled inductor (CI) and voltage multiplier cell (VMC) is proposed in this paper. The gate pulses of the switches are synchronized with each other. During ON state of the switches, the CIs are charged in parallel through the input power source and during OFF state of the switches, they are discharged to the output in series. The energy of the leakage inductances is recycled by the passive clamp circuit. The passive clamp circuit for one of the metaloxidesemiconductor fieldeffect transistor (MOSFETs) is integrated with the VMC. In such a case, the clamp circuit participates in voltage gain extension which facilitates the utilization of lower number of the components, as well. Meanwhile, the MOSFETs and diodes are turned ON and turned OFF with zero current switching (ZCS) performance which reduces the switching losses. Through the dual switches concept and implementation of the CI VMC, the advantages such as high voltage gain, low voltage stresses across switches and distributed current stresses between MOSFETs are achieved. The steady-state analysis of the proposed converter is provided which is followed by a comparison with some published converters. Finally, a 300 W 25V to 400 V laboratory prototype is fabricated and tested to verify the performances.

show abstract

New Structure of Single-Switch Ultra-High-Gain DC/DC Converter for Renewable Energy Applications

Cited by 31 publications

References 30 publications

Implementation and reliability analysis of a new non‐isolated quadratic buck–boost converter using improved Markov modelling

Implementation and reliability analysis of a new non‐isolated quadratic buck–boost converter using improved Markov modelling

A new soft‐switching high gain DC/DC converter with bipolar outputs

A dual switches high step‐up DC–DC converter with low voltage stresses across switches

Contact Info

Product

Resources

About