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Abstract

In this paper, the power factor correction system consisted of: bridge converter, parallel resonant circuit, high frequency transformer, diode rectifier and LFCF filter is presented. This system is controlled by a pulse density modulation method and the principle of its operation is based on the boost technique. The modeling approach is illustrated by an example using AC/HF/DC converter. Verification of the derived model is provided, which demonstrated the validity of the proposed approach.
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Authors and Affiliations

Antoni Bogdan
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Abstract

The purpose of this paper is to propose a model of a novel quasi-resonant boost converter with a tapped inductor. This converter combines the advantages of zero voltage quasi-resonant techniques and different conduction modes with the possibility of obtaining a high voltage conversion ratio by using a tapped inductor, which results in high converter efficiency and soft switching in the whole output power range. The paper contains an analysis of converter operation, a determination of voltage conversion ratio and the maximum voltage across power semiconductor switches as well as a discussion of control methods in discontinuous, critical, and continuous conduction modes. In order to verify the novelty of the proposed converter, a laboratory prototype of 300 W power was built. The highest efficiency η  = 94.7% was measured with the output power Po =  260 W and the input voltage Vin = 50 V. The lowest efficiency of 90.7% was obtained for the input voltage Vin  = 30 V and the output power Po = 75 W. The model was tested at input voltages (30–50) V, output voltage 380 V and maximum switching frequency 100 kHz.

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Bibliography

  1.  M. Forouzesh, Y.P. Siwakoti, S.A. Gorji, F. Blaabjerg, and B. Lehman, “Step-Up DC-DC Converters: A Comprehensive Review of Voltage-Boosting Techniques, Topologies, and Applications”, IEEE Trans. Power Electron. 32(12), 9143‒9178 (2017), doi: 10.1109/ TPEL.2017.2652318.
  2.  W. Li and X. He, “Review of Nonisolated High-Step-Up DC/DC Converters in Photovoltaic Grid-Connected Applications”, IEEE Trans. Ind. Electron. 58(4), 1239‒1250 (2011), doi: 10.1109/TIE.2010.2049715.
  3.  H. Liu, H. Hu, H. Wu, Y. Xing, and I. Batarseh, “Overview of High-Step-Up Coupled-Inductor Boost Converters”, IEEE IEEE J. Emerg. Sel. Top. Power Electron. 4(2), 689‒704 (2016), doi: 10.1109/JESTPE.2016.2532930.
  4.  A. Tomaszuk and A. Krupa, “High efficiency high step-up DC/DC converters – a review”, Bull. Pol. Ac.: Tech. 59(4), 475‒483 (2011), doi: 10.2478/v10175-011-0059-1.
  5.  W. Janke, M. Bączek, and J. Kraśniewski, “Input characteristics of a non-ideal DC-DC flyback converter”, Bull. Pol. Ac.: Tech. 67(5), 841‒849 (2019), doi: 10.24425/bpasts.2019.130884.
  6.  F.C. Lee, “High-frequency quasi-resonant converter technologies”, Proc. IEEE 76(4), 377‒390 (1988), doi: 10.1109/5.4424.
  7.  W.A. Tabisz, P.M. Gradzki, and F.C.Y. Lee, “Zero-voltage-switched quasi-resonant buck and flyback converters-experimental results at 10 MHz”, IEEE Trans. Power Electron. 4(2), 194‒204, 1989, doi: 10.1109/63.24904.
  8.  M. Harasimczuk and A. Borchert, “Single switch quasi-resonant ZVS converter with tapped inductor”, Prz. Elektrotechniczny 3, 44‒48 (2018).
  9.  S. Sathyan, H.M. Suryawanshi, M.S. Ballal, and A.B. Shitole, “Soft-Switching DC-DC Converter for Distributed Energy Sources With High Step-Up Voltage Capability”, IEEE Trans. Ind. Electron. 62(11), 7039‒7050 (2015), doi: 10.1109/TIE.2015.2448515.
  10.  T.F. Wu, Y.S. Lai, J.C. Hung, and Y.M. Chen, “Boost Converter With Coupled Inductors and Buck-Boost Type of Active Clamp”, IEEE Trans. Ind. Electron. 55(1), 154‒162 (2008), doi: 10.1109/TIE.2007.903925.
  11.  J.H. Yi, W. Choi, and B.H. Cho, “Zero-Voltage-Transition Interleaved Boost Converter With an Auxiliary Coupled Inductor”, IEEE Trans. Power Electron. 32(8), 5917‒5930 (2017), doi: 10.1109/TPEL.2016.2614843.
  12.  Y. Chen, Z. Li, and R. Liang, “A Novel Soft-Switching Interleaved Coupled-Inductor Boost Converter With Only Single Auxiliary Circuit”, IEEE Trans. Power Electron. 33(3), 2267‒2281 (2018), doi: 10.1109/TPEL.2017.2692998.
  13.  R. Stala et al., “A family of high-power multilevel switched capacitor-based resonant DC-DC converters – operational parameters and novel concepts of topologies”, Bull. Pol. Ac.: Tech. 65(5), 639‒651 (2017).
  14.  M. Harasimczuk, “A QR-ZCS Boost Converter With Tapped Inductor and Active Edge-Resonant Cell”, IEEE Trans. Power Electron. 35(12), 13085‒13095 (2020), doi: 10.1109/TPEL.2020.2991363.
  15.  M. Harasimczuk, “Przekształtniki podwyższające napięcie z dławikami dzielonymi”, PL Patent, Poland, P.423354, 2017.
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Authors and Affiliations

Jakub Dawidziuk
1
ORCID: ORCID
Michał Harasimczuk
2
ORCID: ORCID

  1. Department of Automatic Control and Robotics, Bialystok University of Technology, ul. Wiejska 45D, 15-351 Bialystok, Poland
  2. Department of Electrical Engineering, Power Electronics and Electrical Power Engineering, Bialystok University of Technology, ul. Wiejska 45D, 15-351 Bialystok, Poland
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Abstract

This paper presents a concept and the results of an investigation of a DC–DC boost converter with high voltage gain and a reduced number of switches. The novel concept assumes that the converter operates in a topology composed of series connection switched- capacitor-based multiplier (SCVM) sections. Furthermore, the structure of the sections has significant impact on parameters of the converter which is discussed in this paper. The paper demonstrates the basic benefit such a multisection SCVM idea in the converter, which is the significant reduction in the number of switches and diodes for high voltage gain in comparison to an SCVM converter. Aside from the number of switches and diodes, such parameters as efficiency and volume of passive components in the multisection converter are analyzed in this paper. In figures, the analysis is demonstrated using the example of 100 kW thyristor-based converters. All the characteristics of the converter are compared between various configurations of switching cells in the particular sections, thus the paper can be useful for a design approach for a high voltage gain multicell converter.

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Authors and Affiliations

Stanisław Piróg
Robert Stala
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Abstract

This paper presents a novel fault detection algorithm for a three-phase interleaved DC–DC boost converter integrated in a photovoltaic system. Interleaved DC–DC converters have been used widely due to their advantages in terms of efficiency, ripple reductions, modularity and small filter components. The fault detection algorithm depends on the input current waveform as a fault indicator and does not require any additional sensors in the system. To guarantee service continuity, a fault tolerant topology is achieved by connecting a redundant switch to the interleaved converter. The proposed fault detection algorithm is validated under different scenarios by the obtained results.
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Authors and Affiliations

Bilal Boudjellal
1
ORCID: ORCID
Tarak Benslimane
1
ORCID: ORCID

  1. Laboratory of Electrical Engineering, University of M’sila, Seat of the wilaya of M’sila, M’sila 28000, Algeria
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Abstract

Food processing technologies for food preservation have been in constant development over a few decades in order to meet current consumer’s demands. Healthy competitive improvements are observed in both thermal and non-thermal food processing technology since past two decades due to technical revolution. Among these novel technologies, pulsed electric field food processing technology has shown to be a potential non-thermal treatment capable of preserving liquid foods. The high-voltage pulse generators specifically find their applications in pulsed electric field technology. So, this paper proposes a new structure of a high-voltage pulse generator with a cascaded boost converter topology. The choice of a cascaded boost converter helps in selecting low DC input voltage and hence the size and space requirement of the high-voltage pulse generator is minimized. The proposed circuit is capable of producing high-voltage pulses with flexibility of an adjusting duty ratio and frequency. The designed circuit generates a maximum peak voltage of 1 kV in the frequency range of 7.5–20 kHz and the pulse width range of 0.8–1.8 μs. Also, the impedance matching between the cascaded boost converter and the high-voltage pulse generator is found simple without further additional components. The efficiency can be improved in the circuit by avoiding low frequency transformers.
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Bibliography

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Authors and Affiliations

S. Krishnaveni
1
ORCID: ORCID
V. Rajini
1

  1. Sri Sivasubramaniya Nadar College of Engineering, India
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Abstract

DC-DC converters are popular switch-mode electronic circuits used in power supply systems of many electronic devices. Designing such converters requires reliable computation methods and models of components contained in these converters, allowing for accurate and fast computations of their characteristics. In the paper, a new averaged model of a diodetransistor switch containing an IGBT is proposed. The form of the developed model is presented. Its accuracy is verified by comparing the computed characteristics of the boost converter with the characteristics computed in SPICE using a transient analysis and literature models of a diode and an IGBT. The obtained results of computations proved the usefulness of the proposed model.

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Authors and Affiliations

Paweł Górecki

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