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Showing 1 to 20 of 28 for “"LLC Resonant Converter"”.
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Condition monitoring of SiC MOSFETs on LLC resonant converter
… (Si) counterparts. SiC-based power electronic converters, therefore, are optimal when operated at medium voltage to high voltage in high switching frequency applications, which results in a much higher power density than Si-based power converters. The reliability of SiC devices, however, …
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LLC Resonant Converter Based Single-stage Inverter with Multi-resonant Branches
… variable frequency modulation (VFM) based on LLC resonant converter. And LLC converter is a common topology of dc/dc conversion. LLC resonant converter can achieve high efficiency and soft-switching performance. Since the dc gain curve of the single-resonant LLC converter is flat when the …
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High Efficiency Optimization of LLC Resonant Converter for Wide Load Range
… efficiency target for the whole AC/DC front-end converter over a wide load range. Distributed power systems are widely adopted in the telecom and computing applications for the reason of high performance and high reliability. As one of the key building blocks in distributed power systems, DC/DC …
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Modeling and design of an LLC resonant converter for a wide voltage conversion ratio applications
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2023-04-12 without embargo terms
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TECHNOLOGIES TO IMPROVE GAN-BASED LLC RESONANT CONVERTER FOR WIDE INPUT VOLTAGE, HIGH OUTPUT CURRENT AC-DC AND DC-DC APPLICATIONS
… in today’s most popular industrial applications. Resonant converters, among a variety of mainstream power converter topologies, are receiving more and more attention owing to their features of high efficiency and high power density. This thesis discusses several challenges to apply LLC resonant …
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Steady-State Time-Domain Analysis of LLCL Resonant Converter
This thesis presents a new LLCL resonant converter topology which is capable of providing zero voltage switching of MOSFET switches for a wider range of operating frequency as compared to conventional LLC resonant converter topology. The proposed topology (LLCL) is a modified form of conventional …
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Topology investigation of front end DC/DC converter for distributed power system
… helps to achieve ZVS for symmetrical half bridge converter. Although with these methods, the efficiency of front end DC/DC converter could be improved, the excessive switching loss prohibited higher switching frequency. To achieve the targets, topologies with high switching frequency and high …
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Investigation of Topology and Integration for Multi-Element Resonant Converters
… power delivery with smaller spaces. The LLC resonant converter has been widely adopted for these applications due to the advantages in high efficiency, high power density and holdup time operation capability. However, LLC resonant converter meets some issues, especially in high output …
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State-Trajectory Analysis and Control of LLC Resonant Converters
… for more power delivery with smaller spaces. The LLC resonant converter has been widely adopted for these applications due to the advantages in high efficiency, high power density and holdup time operation capability. However, unlike PWM converters, the control of the LLC resonant converter is …
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Microcontroller (MCU) Based Simplified Optimal Trajectory Control (SOTC) for High-Frequency LLC Resonant Converters
The LLC resonant converter has been widely used as a DC-DC converter due to its high efficiency, high power density and hold-up capability in power supplies for communication systems, computers and consumer electronics. Use of the high-frequency LLC converter has also been increasing in recent …
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Selection of Primary Side Devices for LLC Resonant Converters
… for high power density, high efficiency bus converters has increased interest in resonant topologies, particularly the LLC resonant converter. LLC resonant converters offer several advantages in efficiency, power density, and hold up time extension capability. Among high voltage (>500V) …
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Investigation of High-density Integrated Solution for AC/DC Conversion of a Distributed Power System
… the key component of DPS system, front-end AC/DC converter is under the pressure of continuously increasing power density. For conventional industry practices, some limitations prevents front-end converter meeting the power density requirement. In this dissertation, different techniques have been …
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Integrated circuit control of resonant and hard switched dc/dc converters for industrial and educational applications
… industrial silicon IC process, for use in the LLC resonant converter topology. The controller is intended to function in systems with output power levels up to 500 W and switching frequencies up to 1 MHz. Simulation data for this controller indicates high degrees of performance over a input …
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A Time-Domain Modeling of Multi-Element Resonant Converter With Capacitive Output Filter
… tool has been proposed for the multi-elements resonant converters. A computer program has been written using the generalized equations in MATLAB App Designer. The MATLAB App Designer provides a graphical user interface (GUI) features to this tool. The time-domain analysis of CLL resonant …
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Variable Ratio Matrix Transformer based LLC Converter for Two-Stage Low-Voltage DC-DC Converter Efficiency Improvement
The low-voltage dc-dc converter (LDC) in electrical vehicles (EVs) is to convert high dc voltage (270V~430V) from traction battery to low dc voltage (12.5V~15.5V) for the vehicle auxiliary systems. Galvanic isolation is required in the LDC due to safety considerations. Three challenges exist in the …
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Design and Implementation of a Multiphase Buck Converter for Front End 48V-12V Intermediate Bus Converters
The trend in isolated DC/DC bus converters is to increase the output power in the same brick form factors that have been used in the past. Traditional intermediate bus converters (IBCs) use silicon power metal oxide semiconductor field effect transistors (MOSFETs), which recently have reached the …
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Transformer Shielding Technique for Common Mode Noise Reduction in Switch Mode Power Supplies
… severe EMI noise issue. In a typical front-end converter, the EMI filter usually occupies 1/3 to 1/4 volume of total converter. Hence, reducing the EMI noise of power converter can help reduce the volume of EMI filter and improving the total power density of the converter. For off-line switch …
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Current Sharing Method for DC-DC Transformers
… cost. In a computer server system, the front-end converter, supplying the load subsystems, is typically a multiple output power supply. The power supply unit is custom designed and its output voltages are fully regulated, so it is not very efficient or cost effective. Most of the load systems in …
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Investigation of High Performance AC/DC Front-End Converter with Digital Control for Server Applications
… is still a big challenge for front-end AC/DC converters. For DPS systems, front-end AC/DC converters are under the pressure of continuous increasing power density requirement. Although increasing switching frequency can dramatically reduce the passive component size, its effectiveness is …
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High-Frequency Oriented Design of Gallium-Nitride (GaN) Based High Power Density Converters
… and lower switching losses, WBG-based power converter can adopt a higher switching frequency and pursue higher power density and higher efficiency. As a trade-off of the advantages, there also exist the high-frequency-oriented challenges in the adoption of the GaN HEMT under research, …
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