High power DC/DC converter using extreme close-coupled inductors aimed for electric vehicles

Hirakawa, Mitsuaki; Watanabe, Yasuto; Nagano, Masao; Andoh, K.; Nakatomi, Somei; Hashino, Satoshi; Shimizu, Toshihisa

doi:10.1109/ipec.2010.5542015

Cited by 80 publications

(31 citation statements)

References 5 publications

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“…Using ICTs for interleaved dc-dc converters has been extensively described in literature and has been shown to result in a reduction of the magnetic component's volume, losses and weight [17]- [19].…”

Section: Interleaved Buck Convertermentioning

confidence: 99%

99% Efficient Three-Phase Buck-Type SiC MOSFET PFC Rectifier Minimizing Life Cycle Cost in DC Data Centers

2017

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Abstract-Due to the increasing power consumption of data centers, efficient dc power distribution systems have become an important topic in research and industry over the last years and according standards have been adopted. Furthermore the power consumed by telecommunication equipment and data centers is an economic factor for the equipment operator, which implies that all parts of the distribution system should be designed to minimize the life cycle cost, i.e. the sum of first cost and the cost of the power conversion losses. This paper demonstrates how semiconductor technology, chip area, magnetic component volumes and switching frequency can be selected based on life cycle cost, using analytical and numerical optimizations. A three-phase buck-type PFC rectifier with integrated active filter for 380V dc distribution systems is used as an example system, which shows that a peak efficiency of 99% is technically and economically feasible with state-of-the-art SiC MOSFETs and nanocrystalline or ferrite cores. Measurements taken on an 8 kW, 4 kWdm -3 hardware prototype demonstrate the validity and feasibility of the design.Index Terms-Active third-harmonic current injection, bucktype power factor correction (PFC) converter, three-phase rectifier systems, integrated active filter rectifier.

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Section: Interleaved Buck Convertermentioning

confidence: 99%

99% Efficient Three-Phase Buck-Type SiC MOSFET PFC Rectifier Minimizing Life Cycle Cost in DC Data Centers

2017

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“…In automotive industry, eco-friendly cars, such as Hybrid Electric Vehicles (HEV) and Plug-in Hybrid Electric Vehicles (PHEV), have gained great attention because of the concern towards the global warming and the energy depletion issues (1)- (5) . In these vehicles, the power converters, for the interface between the storage unit (usually batteries) and the three phase inverter, require high power density in order to increase the interior space in the vehicles and improve the driving performances (4) (5) .…”

Section: Introductionmentioning

confidence: 99%

“…In these vehicles, the power converters, for the interface between the storage unit (usually batteries) and the three phase inverter, require high power density in order to increase the interior space in the vehicles and improve the driving performances (4) (5) . The volume of the energy storage elements, the inductors and the capacitors occupies a large part of space in the powertrain (6) .…”

Section: Introductionmentioning

confidence: 99%

“…In addition, there are some interleaved topologies that use the well-known technique of magnetic coupling: The interleaved converter with Close-Coupled Inductors (CCI), that are divided into one inductor and one transformer (5) (13) ; the interleaved converter with Loosely-Coupled Inductors (LCI) (14)- (16) ; and the converter with Integrated Winding Coupled Inductors (IWCI) that integrates one inductors and one transformer into a single core (17) (18) . In this context, the downsizing effects of the integrated magnetic components in the three topologies are needed to evaluate quantitatively and discuss the future high power density technical trend.…”

Section: Introductionmentioning

confidence: 99%

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Allowable Power Analysis and Comparison of High Power Density DC-DC Converters with Integrated Magnetic Components

et al. 2017

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Interleaved dc-dc converters with integrated magnetic components are popular as converters capable to achieve high efficiency with less of volume and mass. There are three methods for integrated magnetic components: loosely-coupled inductors, closed-coupled inductors and integrated-winding-coupled inductors. This paper presents a method to calculate the allowable power in various circuit topologies. It is useful for measuring the allowable power without magnetic saturation of an inductor based on its size. Following the analysis of allowable power for each coupled inductor, the allowable power of the integrated magnetic components is compared to that of the conventional interleaved converter. This comparison is realized under the same conditions. As a result, the interleaved converter with loosely-coupled and integrated winding coupled inductors were found to be effective for the downsizing of the magnetic components under continuous conduction mode operation. On the other hand, the interleaved converter with close-coupled inductors is effective for the downsizing of the magnetic components under critical conduction mode operation. This comparative data is discussed from both theoretical and experimental points of view.

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“…Benefits of such control methods include reduction of size, losses and cost of the input and output filters, reduction of current stress of the dc bus capacitor, improved dynamic performance and increase in the power capacity of the converters. Interleaved DC-DC converters are used in various applications: as voltage regulation modules [1]- [2], renewable applications [3]- [5], traction applications [6]- [8] and in other areas.…”

Section: Introductionmentioning

confidence: 99%

Interleaved DC-DC Converter with Discrete Duty Cycle and Open Loop Control

Kroics

Sokolovs

2016

Latvian Journal of Physics and Technical Sciences

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The authors present the control principle of the multiphase interleaved DC-DC converter that can be used to vastly reduce output current ripple of the converter. The control algorithm can be easily implemented by using microcontroller without current loop in each phase. The converter works in discontinuous conduction mode (DCM) but close to boundary conduction mode (BCM). The DC-DC converter with such a control algorithm is useful in applications that do not require precise current adjustment. The prototype of the converter has been built. The experimental results of the current ripple are presented in the paper.

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High power DC/DC converter using extreme close-coupled inductors aimed for electric vehicles

Cited by 80 publications

References 5 publications

99% Efficient Three-Phase Buck-Type SiC MOSFET PFC Rectifier Minimizing Life Cycle Cost in DC Data Centers

99% Efficient Three-Phase Buck-Type SiC MOSFET PFC Rectifier Minimizing Life Cycle Cost in DC Data Centers

Allowable Power Analysis and Comparison of High Power Density DC-DC Converters with Integrated Magnetic Components

Interleaved DC-DC Converter with Discrete Duty Cycle and Open Loop Control

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