Design Methodology of a Line-Frequency Zig-Zag Transformer to Utilize its Winding Leakage Inductances as Integrated Boost-Inductances in a Unified AC-DC System

Das, Annoy Kumar; Shetty, Akshatha; Fernandes, B. G.

doi:10.1109/ecce.2018.8557912

Cited by 7 publications

(3 citation statements)

References 15 publications

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“…9(a). The novel magnetic design approach for the line-frequency zig-zag transformer design is proposed and verified with the help of 2-D FEM analysis in [38]. Due to brevity, only the salient features of the transformer design are discussed here.…”

Section: Integrated Magnetic Design For the Proposed Mpecmentioning

confidence: 99%

“…9(c). Analysis in [38] shows that 0.03 pu of leakage inductance is integrated into the transformer design. While referred to the secondary side of the zig-zag transformer, it translates to L ac σ = 1.61 mH (≡ 0.03 pu), which is used as integrated boost inductance for ac power transfer and limits the peak-to-peak current ripple within 10% of the rated value.…”

Section: Integrated Magnetic Design For the Proposed Mpecmentioning

confidence: 99%

“…9(d). Analysis in [38] shows that 0.12 pu of leakage inductance is integrated into the zigzag winding sections. While referred to the secondary (low voltage) side, it translates to L pv σ = 6.21 mH (≡ 0.12 pu), which is utilized as the integrated boost inductance for dc power transfer.In the proposed MPEC system, high value of boost inductance is desired as it integrates low voltage solar PV (V pv = 48 V) to the common high voltage dc bus (V dc = 300 V) of the PWM converter.…”

Section: Integrated Magnetic Design For the Proposed Mpecmentioning

confidence: 99%

See 2 more Smart Citations

Evaluation of Multifrequency Power Electronic Converters: Concept, Architectures, and Realization

Chitransh

Shetty

Das

et al. 2021

IEEE J. Emerg. Sel. Topics Power Electron.

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There exists two well known types of power transfer ac or dc. Power transfer at multiple frequencies has not yet gained much attention. This paper aims at bringing out such topologies, which are capable of integrating different electrical power sources (ac or dc) irrespective of its frequency of generation, form a multi-frequency bus, transmit power over a single line and extract/convert them at the load side. This leads to the definition of unified utility/grid concept. For this, the paper presents more insight into three possible multi-frequency converter topologies with renewable energy sources (RESs)/battery integration. The proposed topologies work on the principle of orthogonal power transfer. Furthermore, power transfer at multiple frequencies shows an effective way of decoupling the individual sources of the system. Finally, the feasibility of transferring power at multiple frequencies is validated experimentally and the results are discussed herein along with its potential benefits.

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Section: Integrated Magnetic Design For the Proposed Mpecmentioning

confidence: 99%

Section: Integrated Magnetic Design For the Proposed Mpecmentioning

confidence: 99%

Section: Integrated Magnetic Design For the Proposed Mpecmentioning

confidence: 99%

See 1 more Smart Citation

Evaluation of Multifrequency Power Electronic Converters: Concept, Architectures, and Realization

Chitransh

Shetty

Das

et al. 2021

IEEE J. Emerg. Sel. Topics Power Electron.

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Axial vibration characteristics analysis of transformer windings based on magnetic‐structural coupling correction model

Wang,

Teng,

Geng

et al. 2024

IET Electric Power Appl

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Due to the strong coupling effect between the internal magnetic field and the structural field of the transformer, the magnetic‐structural coupling should be considered in axial vibration process of the winding short‐circuit impact. A 110 kV transformer is taken as the research object. Firstly, the vibration modal characteristics of the transformer are calculated using the classical axial vibration model, and the spatial distribution of the leakage magnetic flux density of the iron core window is obtained based on the image method, which is used as the basis for calculating the excitation electromagnetic force. With the consideration of the non‐linear mechanical characteristic of the pad, the dynamic stiffness equation is analysed and established and the magnetic‐structural coupling correction model is constructed. Finally, the winding vibration amplitudes obtained respectively by the classical model, the magnetic‐structural coupling model, and the magnetic‐structural coupling correction model considering the dynamic stiffness are compared. The results show that, compared with the classical model, the vibration amplitude increment with the magnetic‐structural coupling correction model is less. The dynamic stiffness will hinder the vibration intensification. The magnetic‐structural coupling correction model can provide a more accurate calculation scheme for the winding vibration characteristic analysis.

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A Single-Stage Buck-Boost Induction Motor Drive with Non-Pulsating Motor Terminal AC Voltages

Delgado-Zaragoza,

Gupta

2023

2023 IEEE Energy Conversion Congress and Exposition (ECCE)

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Design Methodology of a Line-Frequency Zig-Zag Transformer to Utilize its Winding Leakage Inductances as Integrated Boost-Inductances in a Unified AC-DC System

Cited by 7 publications

References 15 publications

Evaluation of Multifrequency Power Electronic Converters: Concept, Architectures, and Realization

Evaluation of Multifrequency Power Electronic Converters: Concept, Architectures, and Realization

Axial vibration characteristics analysis of transformer windings based on magnetic‐structural coupling correction model

A Single-Stage Buck-Boost Induction Motor Drive with Non-Pulsating Motor Terminal AC Voltages

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