Interleaved Three-Phase Forward Converter Using Integrated Transformer

Integrated magnetic components for interleaved converters have been developed in order to fulfill the demand for high power density and high efficiency in power conversion systems. The close-coupled inductor and the loosely coupled inductor methods for interleaved converters are well known as attractive techniques to downsize magnetic components or improve the power conversion efficiency. Moreover, the integrated winding coupled inductor has already been proposed. However, the advantages of the interleaved converter with the integrated winding coupled inductor over the other methods have not been fully elucidated. Consequently, this paper analyzes and evaluates the integrated winding coupled inductor, specifically, the characteristics of the inductor ripple current and the magnetic flux in the core. The analysis shows that the integrated winding coupled inductor provides attractive features compared with the other methods. The effectiveness of the integrated winding coupled inductor is discussed from theoretical and experimental points of view.

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“…According to (26), the number of turns N 2 is decided as 12 turns to reduce the copper loss of the windings.…”

Section: A Novel Design Methods Of Iwcimentioning

confidence: 99%

Magnetic Analysis, Design, and Experimental Evaluations of Integrated Winding Coupled Inductors in Interleaved Converters

Imaoka¹,

Umetani

Kimura³

et al. 2016

IEEJ Journal IA

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“…Parallel connection techniques for inverters can be employed in motor-drive systems, converter systems, distributed generation systems, and distributed uninterrupted power systems [1][2][3][4][5]. The benefits the parallel inverters bring are, low cost, good maintenance, offering higher level of availability and good redundancy, etc.…”

Section: Introductionmentioning

confidence: 99%

Analysis of one fast networked control system for parallel operation of inverters

Zhang

Cai

Dong

2010

IECON 2010 - 36th Annual Conference on IEEE Industrial Electronics Society

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In this paper, two power-sharing strategies of the fast networked control system for inverter parallel operation is proposed, which differs in transmission signals of power. Because of the rapidity of control period, the transmission timedelay can not be ignored. After the description of implementation method and mathematical modeling of systems, two control strategies are carried out the comparison of powersharing performance. The prediction method of stability condition with time-delay is presented. In addition, one networked control strategy is chosen in practical application. The experimental results demonstrate the validity of these schemes.

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“…Forward converters with parallel-connected scheme have been presented in [1][2] to share input and load currents and reduce the input and output ripple currents with the interleaved pulse-width modulation (PWM). However, power switches in the conventional parallel-connected forward converters are operated in the hard switching.…”

Section: Introductionmentioning

confidence: 99%

Analysis of parallel-connected zero-voltage- switching forward converter

Lin

Chen

2009

2009 International Conference on Electrical Machines and Systems

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This paper presents a soft switching converter with interleaved pulse-width modulation (PWM) scheme. There are two circuit modules in the proposed converter to share the load current. The interleaved PWM scheme is adopted to control two converter modules such that the input and output ripple currents and the current stresses on power switches and transformer windings are reduced. In each converter module, two forward converters with active clamp technique are adopted to further reduce the ripple current on the output capacitor and decrease the current stresses on transformer windings. The gate signals of two power switches in each converter module are complementary each other in order to realize the zero voltage switching turn-on of switches at the transition interval. Thus, the switching losses and thermal stresses of the semiconductors and transformers are reduced. All of these features make the proposed converter suitable for the dc-dc converters with high output current. Finally, experiments based on a 600W prototype are provided to verify the theoretical analysis.Index Terms--Power conversion, Power Converter, ZVS.

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Interleaved Three-Phase Forward Converter Using Integrated Transformer

Cited by 56 publications

References 19 publications

Magnetic Analysis, Design, and Experimental Evaluations of Integrated Winding Coupled Inductors in Interleaved Converters

Magnetic Analysis, Design, and Experimental Evaluations of Integrated Winding Coupled Inductors in Interleaved Converters

Analysis of one fast networked control system for parallel operation of inverters

Analysis of parallel-connected zero-voltage- switching forward converter

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