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Showing 1 to 20 of 154 for “"LLC"”.
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Micronotes, LLC : business plan
The primary goal of this research was to determine if Micronotes, a start-up company based on an electronic bill-pay service that enables customers to prepay and discount their bills, is a viable business proposition. Here is how Micronotes works: On April 15th, a customer receives a $1,000 …
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Improvements of Synchronous Rectification on LLC-DCX
… voltage sensed synchronous rectification (SR) on LLC DC-Transformers (DCXs). Firstly, a current resonance issue caused by the SR controller, and secondly a early turn-off issue from parasitics present in the drain-source sensing path. Two novel methods are proposed to solve the early turn-off …
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PCB-Based Heterogeneous Integration of LLC Converters
… which makes their design even more challenging. LLC resonant converters are frequently utilized as DC-DC converters in off-line power supply and data centers because of their high efficiency and hold-up capabilities. LLC converters may reduce electromagnetic interference because the primary …
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Condition monitoring of SiC MOSFETs on LLC resonant converter
… the functionality of the proposed method, an LLC full-bridge resonant converter that operates at a medium voltage and high switching frequency was designed and used to obtain the experimental results. This converter will operate at various duty ratios, DC-link voltages, switching frequencies …
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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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Selection of Primary Side Devices for LLC Resonant Converters
… 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) MOSFETs, Super Junction MOSFETs, such as Infineon's CoolMOS parts, offer lower …
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Jackson Creek Arts and Trails, LLC: Museum Travel Immersion Programs
<p>Museums have become increasingly oriented towards reaching new audiences, encouraging visitor loyalty, and informing the public about their overall relevance. Innovation in programming is a centerpiece of this effort, including a provision of programs for all age groups and demographics. At the …
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Full Bridge LLC Converter Secondary Architecture Study for Photovoltaic Application
… of circuit secondary side architectures for LLC converter for microconverter application. As the research foundation, general characteristic of solar energy and PV panel operation are introduced for the understanding of the needs. Previous works are referenced and compared for advantages and …
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Design Optimizations of LLC Resonant Converters with Planar Matrix Transformers
LLC resonant converters have been a popular choice for DC-DC converters due to their high efficiency, high power density, and hold-up capability in power supplies for communication systems, datacenters, consumer electronics, and automobiles. With the rapid development of wide-bandgap devices and …
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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
… As a promising topology for this application, LLC resonant converters can achieve both high efficiency and wide input voltage range capability because of its voltage gain characteristics and small switching loss. However, the efficiency of LLC resonant converter with diode rectifier still …
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Optimal Design of MHz LLC Converter for 48V Bus Converter Application
… to a fixed 36V bus voltage. The second stage LLC converter convert the 36V to 12V by a 3:1 transformer. The whole solution achieves the fixed frequency control. The thesis focus on the detail design and optimization of LLC converter, especially its transformer. To have high density and high …
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Optimization of LLC Resonant Converters: State-trajectory Control and PCB based Magnetics
… output and fast transient response. The LLC resonant converters have been widely used as the DC-DC converter in off-line power supplies and datacenters due to its high efficiency and hold-up capability. Using LLC converters can minimize switching losses and reduce electromagnetic …
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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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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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Variable Ratio Matrix Transformer based LLC Converter for Two-Stage Low-Voltage DC-DC Converter Efficiency Improvement
… such as phase-shift full-bridge converter and LLC resonant converter, have been widely studied in the past. A matrix transformer is widely adopted in single-stage LDC design to deal with the large current. At last, the low-profile design allows large footprint area for high power density and …
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Mechanismen der Apoptose in proximalen Tubulusepithelzellen der Niere (LLC-PK1) : ein pathophysiologisches Modell für das hämolytisch-urämische Syndrom (HUS)
… auf proximale Tubulusepithelzellen der Niere (LLC-PK1) wirken und konzentrationsabhängig Apoptose auslösen: [Kontrolle: 10%, Stx1 0,1µg/ml: 14% (p>0,05), Stx1 0,5µg/ml: 29% (p<0,001) , Stx1 1,0µg/ml: 37% (p<0,001), Stx2 0,1µg/ ml: 21% (p<0,05), Stx2 0,5µg/ml: 33% (p<0,001), Stx2 1,0µg/ml: 41% …
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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
… thesis discusses several challenges to apply LLC resonant converter in industrial applications, including wide input voltage range, poor feedback performance, output current unbalance among multiply phases, and double line frequency ripple with power factor correction (PFC). Aiming at these …
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Does the Intra-operatively measured Leg Length Correction compare to the Post-operative radiograph in Total Hip Replacement surgery?
… study aims to compare the leg length correction (LLC) measured intra-operatively using the Vertical Measurement SystemTM (VMS) in total hip arthroplasty (THA), with the LLC measured on a 6-week post-operative Xray. We also wanted to quantify any residual leg length discrepancy (LLD) using this …
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