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Showing 1 to 20 of 24 for “"Dual Active Bridge"”.
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A four-level dual active bridge converter for data center applications
Embargo set by: Seth Robbins for item 123476 Lift date: 2024-04-29T21:58:46Z Reason: Author requested closed access (OA after 2yrs) in Vireo ETD system
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Design, Modeling and Analysis of an AC-AC Dual Active Bridge Converter
… greater energy density have made the SST an attractive option. Among various power electronic converter topologies, the Dual Active Bridge (DAB) has become popular for its bidirectional power flow capability and galvanic isolation, primarily in the DC application space. Advancements in …
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Advance control of Dual Active Bridge Multilevel Inverter (DABMI) with Open Winding Transformer (OWT) model
… Consequently, this study proposed MPDPC of Dual Active Bridge Multilevel Inverter (DABMI) for grid connected application which incorporate the concept of CPT. The objectives of the proposed control approach is to improve the system performance during various conditions specifically for …
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A flying capacitor multilevel dual-active bridge converter for interfacing high voltage in more-electric aircraft
… with low-voltage buses and storage. While the dual-active bridge (DAB) converter has traditionally served this role, its reliance on single high-voltage devices constrains achievable switching frequency, resulting in bulky magnetics. The addition of a flying-capacitor multilevel (FCML) …
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Digital geometric-sequence control technique for bidirectional dual active bridge DC-DC converters used in future electric vehicles
Bidirectional DC-DC converters are widely used in different applications such as energy storage systems, Electric Vehicles (EVs), UPS, etc. In particular, future EVs require bidirectional power flow in order to integrate energy storage units into smart grids. These bidirectional power converters …
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Evaluation and Design of a SiC-Based Bidirectional Isolated DC/DC Converter
… isolated DC/DC converter topologies, dual active bridge and CLLC resonant converter are introduced. The operating principle of these converter topologies are explained. A comparative analysis between the two converter topologies, focusing on total device loss, has been performed. It …
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Modelling and real-time simulation of a modular bidirectional solid-state transformer for ultra-fast charging of electric vehicles
… power conversion solution with a Cascaded H-Bridge (CHB) rectification stage followed by a Dual Active Bridge (DAB) conversion stage. Control strategies and modulation schemes are implemented to achieve voltage balance and unity power factor, and to mitigate current harmonics and voltage …
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Design and evaluation of a reconfigurable stacked active Bridge dc/dc converter for efficient wide load-range operation
… soft-switched dc-dc converter based on an active bridge topology which overcomes some of the limitations of the conventional dual-active bridge (DAB). The topology comprises a double-stacked bridge inverter, coupled to a recongurable rectifier through a special three-winding leakage …
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Evaluation and Development of Medium-Voltage Converters Using 3.3 kV SiC MOSFETs for EV Charging Application
… power-delivery solution utilizing an MV dual-active-bridge (DAB) converter. The proposed architecture is designed to directly interface with the MV grid for high-power, fast-charging capabilities while eliminating the need for an installation of the MV-LV transformer. The MV DAB converter …
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Design and Control of a Compact 7.2 kW GaN-Based Bidirectional Isolated On-Board Charger (OBC)
… scheme is proposed for non-resonant isolated Dual Active Bridge (DAB) converters. This method achieves full Zero Voltage Switching and 75% quasi-Zero Current Switching across a wide range of input and output voltages while minimizing inverse power flow and significantly reducing di/dt in power …
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Single-Stage Wireless Power Transfer System with Single-Switch Secondary Side Modulation
… primary side sensing and modulation scheme, or dual active bridge type of topology. However, all existing methods have limitations and disadvantages in terms of increased size/cost, control complexity, or reliability in electrically noisy environments. This dissertation proposes a single switch …
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Isolated Bi-directional DC-DC Converter with Smooth Start-up Transition
… loads in the house such as home appliances. The dual active bridge (DAB) converter is very useful because of its high power capability and efficiency. Its symmetry is effective in transferring power in both directions. However, the DAB converter has drawbacks in the start-up stage. These …
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Power electronic transformers for AC-AC and AC-DC conversion with reduced number of switches
… power conversion. This converter operates on the Dual Active Bridge (DAB) principle wherein the transformer leakage inductance is used for power transfer. Hence, this converter does not suffer from problems associated with leakage energy commutation and additional snubber circuits are not required …
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DC/DC converter for offshore DC collection network
… output-series connection, consisting of full-bridge DC/DC modules. A new master-slave control scheme is developed to ensure power sharing under all operating conditions, including during failure of a master module by allowing the status of master module to be reallocated to another healthy …
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Power Interface Design and System Stability Analysis for 400 V DC-Powered Data Centers
… cost in data centers. A cascaded totem-pole bridgeless PFC converter to convert grid ac voltage to the 400 V dc voltage is proposed in this work. Three main control strategies are developed for the power converters. First, a model predictive control is developed for the cascaded totem-pole …
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Single-phase vs. Three-phase High Power High Frequency Transformers
… of the transformers. And single and three-phase Dual Active Bridge Converter (DAB1 and DAB3) topologies with single and three-phase isolating transformers are selected for the transformer comparison. Design optimization of power transformer has been studied and simplified models have been built …
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High Frequency Isolated Power Conversion from Medium Voltage AC to Low Voltage DC
… frequency high power DC/DC converter topology dual active bridge (DAB) is introduced and compared with novel CLLC resonant converter in terms of switching loss and conduction loss point of view. CLLC holds ZVS capability over all load range and smaller turn off current value. This is beneficial …
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DC-DC converter designs for medium and high voltage direct current systems
… of this thesis. The modular multilevel design of dual active bridge (DAB) converters is analysed in light of state-of-the-art research in the field. The multilevel DAB structure is meant to serve medium and high voltage applications. The modular design facilitates scalability in terms of …
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Design and analysis of current stress minimalisation controllers in multi-active bridge DC-DC converters.
Multi active bridge (MAB) DC-DC converters have attracted significant research attention in power conversion applications within DC microgrids, medium voltage DC and high voltage DC transmission systems. This is encouraged by MAB's several functionalities such as DC voltage stepping/matching, …
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Customisable Magnetic Components Using Nanocrystalline Flake Ribbon
… the built transformers in a 5.5 kW, 100 kHz dual active bridge (DAB) converter. Loss-separation is performed by measuring the core losses and conduction losses individually, and possible errors are analysed in detail for the loss measurement. Additionally, the transformer losses during the …
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