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Showing 1 to 17 of 17 for “"level converter"”.
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Modeling and Simulation of a Cascaded Three-Level Converter-Based SSSC
… (SSSC) systems utilizing cascaded-multilevel converters (CMCs). Among flexible AC transmission system (FACTS) controllers, the SSSC has shown feasibility in terms of cost-effectiveness in a wide range of problem-solving abilities from transmission to distribution levels. Referring to the …
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A nano-CMOS based universal voltage level converter for multi-VDD SoCs.
… multiple supply voltages systems, which employs level converter between two voltage islands is one of the most effective ways to reduce power consumption. In this thesis work, a unique level converter known as universal level converter (ULC), capable of four distinct level converting operations, …
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Analysis, simulation and modeling of three-level VSIs
Analysis of three-phase, three-level VSIs is done for high-power high-voltage applications. Complete Space Vector Modulation (SVM) algorithm is developed for a three-phase, three-level converter. Special attention is given to minimization of output ripple and voltage balance of the dc-link input …
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MOSFET-based MMC for low-voltage DC distribution networks
… this limit, a high-performance modular multilevel converter (MMC) with parallel-connected MOSFETs is proposed in this thesis. It allows the converter to operate at relatively high voltage with low harmonic content, without the use of large AC filters. MMC also has low switching frequency, and …
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Modeling of a Single-Phase Liquid Cooling System for Power Electronics Applications
… for the thermal management of a medium power level converter system. The system utilizes a plastic insert cold plate design to provide even cooling over the backside of a power electronics device by directing coolant through parallel serpentine channels. Material selection and compression set …
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Modeling and Control Strategy for Capacitor Minimization of Modular Multilevel Converters
The modular multi-level converter (MMC) is the most prominent interface converter used between the HVDC grid and the HVAC grid. One of the important design challenges in MMC is to reduce the capacitor size. In the current practice, a rather large capacitor bank is required to store line-frequency …
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High Frequency, High Power Density Integrated Point of Load and Bus Converters
… the demands on DC/DC power supplies. DC/DC converters are ubiquitous in everyday life, found in products ranging from small handheld electronics requiring a few watts to warehouse sized server farms demanding over 50 megawatts. To improve efficiency and power density while reducing …
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State Space Modeling and Power Flow Analysis of Modular Multilevel Converters
… the limited choices available, the modular multi-level converter (MMC) is the most prominent interface converter used between the DC and AC grids. This subject has been widely pursued in recent years. One of the important design challenges when using an MMC is to reduce the capacitor size …
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Beyond PWM: Active balancing, start-up and ZVS for multi-level converters with applications in renewable energy systems
… operational challenges of flying capacitor multi-level (FCML) converters and introduces new techniques to improve performance. First, start-up and a new method to extract power from within an FCML converter at a naturally occurring low-voltage node are investigated with a 5-level FCML converter. …
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Hybrid SC-Inductive Based Topologies for Low-volume High-efficiency Switched-mode Power Supplies
… The most commonly used SMPS are inductive converters based on conventional buck and boost converter topologies due to their simplicity and relatively high power density and efficiency. However, in applications with large voltage difference between their inputs and outputs, these converters …
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CONTROL METHODS FOR BESS POWER CONVERTERS AND FREQUENCY REGULATION IN A LOW INERTIA GRID
… the globe. Particularly, the share of power converter-based RES such as wind and solar-based power sources has been exponentially increasing in the existing power system. The converter-based RESs are often integrated into the existing grid in the form of a microgrid which may be required to …
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Investigation of a High-Frequency Link Single-Stage Asymmetrical Multilevel Converter for Grid Integration of Renewable Energy Systems
Different power electronic converter topologies have been investigated to integrate renewable energy systems to the grid. Cascaded multilevel converters with a high- frequency link have emerged as a viable candidate for such applications. Electrical isolation can be provided using a compact …
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Control and operation of MMC-HVDC system for connecting offshore wind farm
… farms over distances 80-100 km, modular multi-level converter (MMC) based high voltage DC (HVDC) system emerges as a more suitable solution than HVAC due to its flexible control and transmission distance not affected by the cable charging current. For HVDC connected wind farms, the offshore …
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Novel DC/DC Converters For High-Power Distributed Power Systems
… high efficiency. In the traditional front-end converter based on the two-stage approach for high-power three-phase DPSs, the DC-link voltage coming from the power factor correction (PFC) stage penalizes the second-stage DC/DC converter. This DC/DC converter not only has to meet the …
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A power supply circuit for gate driver of flying capacitor multi-level converters
… for the gate drivers of flying capacitor multi-level (FCML) converters. FCML converters with new GaN power switches have received increased attention due to their potential to achieve high conversion efficiency and high power density. However, one of the major challenges is providing power to …
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Intentional and Unintentional Light Emission Diode in Power Electronics applications
… current conduction mode flyback PFC converter has been revealed as the preferred choice in order to achieve a high PF with a good cost-performance ratio. Notwithstanding the use of a suitable control method that enables a high PF, different inherent causes of distortion in the input …