A simple soft-switched buck converter without implementing auxiliary switch

Talebian, Iman; Alavi, Peyman; Babaei, Ebrahim; Khoshkbar-Sadigh, Arash

doi:10.1007/s00202-022-01507-6

Cited by 2 publications

(3 citation statements)

References 22 publications

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“…By substituting ( 14) in ( 3) and ( 15) in (10), the voltage of both L1 and L2 is equal when the switch S1 is on and off:…”

Section: A Calculation the Inductance Values Of Inductorsmentioning

confidence: 99%

“…Accordingly, to prevent high current ripple with low efficiency, the Z-source converter and Quasi switched boost converter became effective structures with a small range of duty ratio [8]- [9]. Furthermore, the voltage gains of both mentioned converters are the same and they can be used in various power conversions such as AC-DC, DC-AC, AC-AC, and DC-DC [10]- [13]. In [14], a new quasi-Z-source converter is presented which solves some drawbacks of the Zsource converter such as discontinuous input current and leakage current due to lack of common grounded connection between null of output and negative terminal of input.…”

Section: Introductionmentioning

confidence: 99%

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Analysis of High Step-Up Quasi-Z-Source-Based Converter With Low Input Current Ripple

Samadian,

Ghavipanjeh Marangalu,

Talebian

et al. 2024

IEEE Open J. Ind. Electron. Soc.

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This paper presents a new high step-up Quasi Z-source-based DC-DC converter with switched boost techniques and voltage multiplier cells. Compared to the conventional Z-Source-based converters, this converter, not only can achieve High voltage gain but also, has good efficiency at high output voltage and higher output power conditions. Most of the Z-source-based converters suffer from high current stress across the power MOSFETs and the operation in lower power. However, the other important advantages include very low input current ripple, low voltage and current stress across the power switches, no duty ratio limitation, and leakage current elimination by providing the common grounded feature. So, in this topology, the null of the output is connected to the negative terminal of the input DC source, directly. therefore, the leakage current can be eliminated completely. As a result, the proposed converter is suitable for renewable energy sources (RES) applications such as photovoltaic (PV) systems. The mathematical analysis, operating principle for the proposed converter, and comparison with other converters are evaluated. Finally, in order to verify the accurate performance of the proposed converter and confirm the mentioned features of the proposed converter, a 1 kW laboratory prototype is built and tested.INDEX TERMS High voltage conversion, Z-source, Low current ripple, DC-DC converter, voltage multiplier cell.

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“…By substituting ( 14) in ( 3) and ( 15) in (10), the voltage of both L1 and L2 is equal when the switch S1 is on and off:…”

Section: A Calculation the Inductance Values Of Inductorsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Analysis of High Step-Up Quasi-Z-Source-Based Converter With Low Input Current Ripple

Samadian,

Ghavipanjeh Marangalu,

Talebian

et al. 2024

IEEE Open J. Ind. Electron. Soc.

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show abstract

“…Recently, step-down converters have many applications such as voltage regulator modules (VRM) for suppling microprocessors and battery chargers. In order to have low current ripple and suitable dynamic response, interleaved structure is presented because these structures have simple operation and power division between parallel branches, which reduces the effective input current for each branch [1][2][3]. But contrary to the advantages of interleaved buck converter, these converters have problems such as high voltage stress on switches, narrow duty cycle and high switching losses.…”

Section: Introductionmentioning

confidence: 99%

A new ZVT high step-down WCCI converter with low output current ripple

memarian¹,

Delshad²,

Sajadieh³

2022

Preprint

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In this paper, an interleaved step-down converter with zero voltage switching for the switches and low output current ripple is presented. Two ferrite cores with three windings are used in the proposed converter to reduce the voltage gain and the output current ripple. Therefore, the volume of the circuit does not change significantly. According to the structure of the proposed converter and the use of the ripple cancellation technique, the ripple of the output current is not high despite the use of coupled inductors. The auxiliary switch is also turned on under ZC condition and turned off under ZVZC condition. Therefore, the auxiliary circuit does not impose significant losses on the converter. To prove the correctness of the theoretical analyzes of the proposed converter, a 160W prototype has been implemented. The practical results show 95% efficiency at full load and 0.2A ripple in the output current.

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A simple soft-switched buck converter without implementing auxiliary switch

Cited by 2 publications

References 22 publications

Analysis of High Step-Up Quasi-Z-Source-Based Converter With Low Input Current Ripple

Analysis of High Step-Up Quasi-Z-Source-Based Converter With Low Input Current Ripple

A new ZVT high step-down WCCI converter with low output current ripple

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