Proceedings ArticleDOI
Design of integrated transformer and inductor for high frequency dual active bridge GaN Charger for PHEV
Mingkai Mu,Lingxiao Xue,Dushan Boroyevich,Brian Hughes,Paolo Mattavelli +4 more
- pp 579-585
TLDR
In this paper, the design of high power density transformer and inductor for the high frequency dual active bridge (DAB) GaN charger is discussed, and the detailed design procedure and loss analysis are discussed.Abstract:
This paper discusses the design of high power density transformer and inductor for the high frequency dual active bridge (DAB) GaN charger. Because the charger operates at 500 kHz, the inductance needed to achieve ZVS for the DAB converter is reduced to as low as 3µH. As a result, it is possible to utilize the leakage inductor as the series inductor of DAB converter. To create such amount of leakage inductance, certain space between primary and secondary winding is allocated to store the leakage flux energy. The designed transformer is above 99.2% efficiency while delivering 3.3kW. The power density of the designed transformer is 6.3 times of the lumped transformer and inductor in 50 kHz Si Charger. The detailed design procedure and loss analysis are discussed.read more
Citations
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Journal ArticleDOI
Power Semiconductor Devices for Smart Grid and Renewable Energy Systems
TL;DR: Some of the major power semiconductor devices technologies and their potential impacts and roadmaps are reviewed.
Journal ArticleDOI
High-Frequency PCB Winding Transformer With Integrated Inductors for a Bi-Directional Resonant Converter
Bin Li,Qiang Li,Fred C. Lee +2 more
TL;DR: In this article, a novel PCB winding based magnetic structure is proposed to integrate both inductor and transformer into one component, which can be easily controlled by changing the cross-sectional area of the core or the length of the air gap.
Journal ArticleDOI
ZVS Soft Switching Boundaries for Dual Active Bridge DC-DC Converters Using Frequency Domain Analysis
TL;DR: In this paper, the authors proposed a new approach using harmonic decomposition of the bridge switching patterns, which gives an explicit theoretical solution under all operating conditions, while also accommodating more complex ac coupling structures, practical impedance nonidealities, and the switching impact of dead-time and device capacitance.
Journal ArticleDOI
Experimental Demonstration of a 98.8% Efficient Isolated DC–DC GaN Converter
TL;DR: The design and implementation of high-efficiency magnetics necessary to realize an isolated full bridge dc–dc converter are presented and the experimental demonstration of ultrahigh efficiency in a 2-kW isolated GaN converter is presented.
OtherDOI
Power semiconductor devices for smart grid and renewable energy systems
TL;DR: This chapter intends to provide a comprehensive and comparative discussion of various important power device technologies which are critical for industrial, smart grid and renewable energy applications.
References
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Journal ArticleDOI
Performance characterization of a high-power dual active bridge DC-to-DC converter
TL;DR: In this article, the performance of a high-power, high-density DC-to-DC converter based on the single-phase dual active bridge (DAB) topology is described.
Journal ArticleDOI
Optimal choice for number of strands in a litz-wire transformer winding
TL;DR: In this paper, the number and diameter of strands to minimize loss in a litz-wire transformer winding is determined, and a power law to model insulation thickness is combined with standard analysis of proximity effect losses to find the optimal stranding.
Book
GaN Transistors for Efficient Power Conversion
TL;DR: In this article, the authors present a practical guide for understanding basic GaN transistor construction, characteristics, and applications, as well as specific application examples demonstrating design techniques when employing GaN devices.
Journal ArticleDOI
Computationally efficient winding loss calculation with multiple windings, arbitrary waveforms, and two-dimensional or three-dimensional field geometry
TL;DR: The squared-field-derivative method for calculating eddy-current (proximity effect) losses in round-wire or litz-wire transformer and inductor windings is derived in this paper.
Journal ArticleDOI
Dual active bridge based battery charger for plug-in hybrid electric vehicle with charging current containing low frequency ripple
TL;DR: In this paper, the operation of a battery charging system, which is comprised of one Full Bridge (FB) AC-DC stage and one Dual Active Bridge (DAB) DCDC stage, with charging current containing low frequency ripple at two times line frequency, designated as sinusoidal charging is investigated.
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