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Showing 1 to 18 of 18 for “"Isolated DC/DC Converter"”.
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Planar transformer isolated DC-DC Converter for Solid-State Transformer
… high power density and high efficiency on power converters has been increasing through the years. Solid state transformer (SST), which is typically formed by three stages, one being DC/AC inverter, which is controllable, one being medium-frequency transformer isolated converter and the other …
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Evaluation and Design of a SiC-Based Bidirectional Isolated DC/DC Converter
… the galvanic isolation using bidirectional isolated DC/DC converters instead of line-frequency transformers. A survey of the latest generation SiC MOSFET is performed. The devices were compared against each other based on their key parameters. It was determined that under the given …
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Design and Implementation of a Radiation Hardened GaN Based Isolated DC-DC Converter for Space Applications
Power converters used in high reliability radiation hardened space applications trail their commercial counterparts in terms of power density and efficiency. This is due to the additional challenges that arise in the design of space rated power converters from the harsh environment they need to …
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High Slew Rate High-efficiency Dc-dc Converter
… in low switching frequency mainly providing DC current. Parallel ATVC has largely reduced conduction and switching losses. Parallel ATVC also reduces the number of VR bulk capacitors. Combined linear and adaptive nonlinear control has been proposed to reduce delay times in the actual …
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Merged multi-stage power conversion : a hybrid switched-capacitor/magnetics approach
… the advantages of a merged multi-stage system in dc-ac applications. By synthesizing a multilevel voltage in pace with the ac grid voltage using the energy buffer, the wide operation range of the inverter stage is compressed, leading to a significantly improved overall system performance. A …
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Optimization of LLC Resonant Converters: State-trajectory Control and PCB based Magnetics
… power factor correction (PFC) circuit and isolated DC/DC converter. Isolated DC/DC converter occupies more than half of the volume in an off-line power supply and takes the most control responsibilities, so isolated DC/DC converter is the key aspect to improve the overall performance and …
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DC-DC converter designs for medium and high voltage direct current systems
DC fault protection is one challenge impeding the development of multi-terminal dc grids. The absence of manufacturing and operational standards has led to many point-to-point HVDC links built at different voltage levels, which creates another challenge. Therefore, the issues of voltage matching …
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A power supply circuit for gate driver of flying capacitor multi-level converters
… 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 its gate drive …
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On the Design of a High-Power Medium-Voltage Converter for Transportation Applications
… applications, the size and weight of power converters and associated cabling is of paramount importance, as this bulk contributes to the "overhead" that must be carried about by the transportation system. Thus, improvements to the power density of such systems, as well as the possibility of …
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Design And Implementation Of A Digital Controller With Dsp For Half-br
DC-DC power converters play an important role in powering telecom and computing systems. With the speed improvement and cost reduction of digital control, digital controller is becoming a trend for DC-DC converters in addition to existed digital monitoring and management technology. In this thesis, …
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PCB-Based Heterogeneous Integration of LLC Converters
… a power factor correction (PFC) circuit, and an isolated DC-DC converter. For off-line power supply, an isolated DC-DC converter offers isolation and output voltage adjustment. For an off-line power supply, it takes up significantly more room than the rest; thus, an isolated DC-DC converter is …
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Fully integrated dc-dc converters with basic and double galvanic isolation
The increasing demand of low-profile power converters in modern electronic devices has pushed research towards integrated systems able to replace expensive and bulky solutions based on discrete components. Consequently, galvanically isolated interfaces are becoming an interesting research topic for …
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High Efficiency DC-DC Converter for EV Battery Charger Using Hybrid Resonant and PWM Technique
… vehicles (PHEVs).This thesis focuses on the DC-DC converter for high voltage battery charger and is divided into four chapters. The background related to EV battery charger is introduced, and the topologies of isolated DC-DC converter possibly applied in battery charge are sketched in Chapter …
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A High-Efficiency Hybrid Resonant Microconverter for Photovoltaic Generation Systems
… systems, where each PV module has its own power converter, have been proven to yield higher output power due to their superior maximum power point tracking capabilities. However, this comes with the disadvantages of higher costs and lower power conversion efficiencies due to the increased number …
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A High-efficiency Isolated Hybrid Series Resonant Microconverter for Photovoltaic Applications
… each PV module is connected with a power converter which can transfer higher output power due to the tracking maximum power point (MPP) capability. However, it also has the disadvantages of lower power conversion efficiency due to the increased number of power electronics converters. The …
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Synchronous-Conduction-Mode Tapped-Inductor Buck Converter for Low-Power, High-Density Application
General-purpose step-down converter is essential in electronic system for processing energy from high-voltage rail to low-voltage circuits. The applications can be found at the auxiliary supplies in automobile, industrial and communication systems. Buck converter is a common circuit topology to …
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Topology and Control Investigation of Soft-Switching DC-DC Converters for DC Transformer (DCX) Applications
… transformer (SST) systems, the fixed-ratio isolated DC-DC converter, namely the DC transformer (DCX), has gained significant popularity. Similar to the passive AC transformer, DCX can bidirectionally convey DC power with very high efficiency. Due to zero-voltage switching (ZVS) and a small …
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High performance electronic systems for high bay light emitting diodes fed from alternating current power grids
… This interface is normally referred as ac-dc LED driver. An ac-dc LED driver is but a power converter that feeds a very unique and non-linear load, and as such it needs to meet several requirements in accordance to the regulations and the needs of the LEDs. Then, as any equipment connected …