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Showing 1 to 11 of 11 for “"CLLC"”.
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Investigation of Modular CLLC DC/DC Converter using Bypass Control for Wide Output Voltage Regulation
… grid of the future, resonant converters like CLLC converter are gaining popularity in applications like dc microgrids because of their advantages like high efficiency and bidirectional operation capability. However, one limitation of such converters is their limited voltage range which makes …
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PCB Integrated Matrix Transformer for a High-Power Single Phase CLLC Resonant Converter with the Novel Application of Circular Orthogonal Parallel Airgaps
… a single-phase 11kW 250kHz bi-directional DC/DC CLLC resonant converter (1PCLLC) for use in electric vehicle on-board chargers (OBC's). By utilizing a variable DC-link, system efficiency is maximized and regulated according to battery load requirements. A gain range of 0.72 – 1.35 is calculated, …
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Evaluation and Design of a SiC-Based Bidirectional Isolated DC/DC Converter
… 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 was found that the CLLC …
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High Frequency Isolated Power Conversion from Medium Voltage AC to Low Voltage DC
… (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 for high frequency operation and taken as our candidate. …
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Topology and Control Investigation of Soft-Switching DC-DC Converters for DC Transformer (DCX) Applications
… root mean square (RMS) current, the open-loop CLLC resonant converter operating at the resonant frequency is a promising candidate for DCX with a constant voltage transfer ratio. In Chapter 2, to solve unsmooth bidirectional power flow and current distortion in the traditional CLLC-DCX with …
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Design, Modeling and Control of Bidirectional Resonant Converter for Vehicle-to-Grid (V2G) Applications
… reduce the size and cost of the converter, a CLLC-type resonant network with fewer magnetics is derived from the original CLLLC-type resonant network. First, an equivalent model for the bidirectional converter is derived for the steady-state analysis. Then, the design methodology is presented …
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High Frequency Bi-directional DC/DC Converter with Integrated Magnetics for Battery Charger Application
… is operated at over 300 kHz. A bi-directional CLLC resonant converter operating at 500 kHz is chosen for the second stage. Instead of using the conventional fixed 400 V DC-link voltage, a variable DC-link voltage concept is proposed to improve the efficiency within the entire battery voltage …
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Stacked-Switched Electrolytic Capacitor-less AC/DC Power Converters
… dual stacked-switch AC/DC stage and a CLLC resonant DC/DC stage. A dq-frame-based controller ensures low harmonic injection and effective grid synchronization in both power flow directions. Ripple reduction is again achieved through duty modulation, validated on a 1kW prototype. …
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PCB-Based High-Power DC/DC Converters with Integrated Magnetics for Battery Charger Applications
… fast switches. The second stage is single phase CLLC (1PCLLC) converter which is attractive due to its less component counts of devices and driver circuits. A novel matrix integrated transformer with controllable built-in leakage inductance for bi-directional 1PCLLC converter was proposed. …
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Investigation and Design of Integrated Magnetics in High-power High-frequency Soft-switching DC/DC Converters for Battery Charger Applications
… structures can be utilized in both single phase CLLC resonant converters and three phase CLLC resonant converters. The applications of the SMBs for different power levels are compared and analyzed. Third, a single phase 22-kW on-board charger structure for 800 V batteries using one SMB structure …
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High-frequency Power Conversion for Medium Voltage Power Electronics Interfaces
… An optimized 800/400 V, 200 kHz, 15 kW CLLC converter is demonstrated. The peak efficiency of this optimized converter reaches 98.8%, and the power density is 3.7 kW/L. The transformer also exhibits good insulation capability, with a partial discharge-free level reaching 7.7 kV. …