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Showing 1 to 13 of 13 for “"Battery chargers"”.
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Integrated on-board battery chargers for EVs based on multiphase machines and power electronics
… integrated into the charging process during the battery charging, which is unavoidable when a three-phase machine of either synchronous or induction type is used. The thesis investigates integrated on-board battery chargers for electric vehicles (EVs) based on multiphase machines and multiphase …
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Bi-Directional AC-DC Converters for Electric Vehicles
… devoted to improve EVs and EV infrastructure. EV battery and thus the on-board EV battery charger are among the most important parts of an EV. There are specific requirements for EV chargers in terms of weight, safety, reliability, cost and efficiency. Meeting power quality standards imposed by …
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Class-E Current Source Power Conversion
… source is used in auxiliary power supplies, battery chargers, and LED drivers. The battery chargers are required to provide constant current within a wide output voltage range, similar to LED drivers. The load-independent (LI) Class-E inverter is a promising topology for such applications …
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Impact of plug in electric vehicle battery charging on a distribution system
Plug-in Electric Vehicles (PEV) battery chargers are mostly connected to the low-voltage grid for charging, hence their increased penetration coupled with uncoordinated charging could impact the distribution system in terms of voltage unbalance and transformer overloading. Although PEV battery …
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A review of the emergency electric power supply systems at PWR nuclear power plants
… generators, Grid network, Lead-acid batteries, Battery chargers, Inverters, and Power Distribution networks). The trends in the design of Emergency Electric Power supply systems at Nuclear Power Plants are presented. The loss of all alternating current power, known as Station Blackout, is …
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Comparative analysis of high input voltage and high voltage conversion ratio step-down converters equipped with silicon carbide and ultrafast silicon diodes
… operational requirements, such as photovoltaic battery chargers, are subject to high conduction losses, high switching losses and substantial reverse-recovery losses when minority carrier principle diodes are used. The recent introduction of silicon carbide diodes with high breakdown voltages …
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Tiny Piezoelectric Energy-Harvesting CMOS Charger
… build, test, and assess energy-harvesting CMOS battery chargers that draw and output the most power possible from ambient motion with centimeter-scale piezoelectric transducers that fit on wireless microsystems. Among the state of the art, synchronous discharge with asymmetrical pre-charging can …
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High Frequency GaN Characterization and Design Considerations
… converters, off-line switching power supplies, battery chargers and motor drives. GaN devices have a much lower gate charge and lower output capacitance than silicon MOSFETs and, therefore, are capable of operating at a switching frequency 10 times greater. This can significantly impact the …
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Design, Modeling and Control of Bidirectional Resonant Converter for Vehicle-to-Grid (V2G) Applications
… have batteries can be charged by on-board battery chargers that can be conductive or inductive. In conductive chargers, the charger is physically connected to the grid by a connector. With the inductive chargers, energy can be transferred wirelessly over a large air-gap through inductive …
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Zero Voltage Switching (ZVS) Turn-on Triangular Current Mode (TCM) Control for AC/DC and DC/AC Converters
… electric cars, UAVs and aero planes, the size of battery chargers and inverters needs to be reduced so as to make space for more parts in these vehicles. Electromagnetic Interference (EMI) filters take up a more than 80 % of these power converters, the size of these filters can be reduced by …
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GaN-Based High-Efficiency, High-Density, High-Frequency Battery Charger for Plug-in Hybrid Electric Vehicle
… control can improve the power density of battery chargers for the plug-in hybrid electric vehicle. Gallium nitride (GaN) devices are used to increase switching frequency and shrink passive components. An innovative DC link reduction technique is proposed and several practical design issues …
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Design and implementation of a universal onboard battery fast charger for transportation electrification applications
… on-board charger (OBC) that allows charging of battery packs from standard utility sockets (85-265 V) as per SAE J1772. Existing EVs such as Neighborhood Electric Vehicles (NEVs), Plug-in-hybrid Electric Vehicles (PHEVs), forklifts, golf kart, and buses have different operating voltages, power …
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Investigation and Design of Integrated Magnetics in High-power High-frequency Soft-switching DC/DC Converters for Battery Charger Applications
… years. These vehicles rely on rechargeable battery packs that can be charged by external power sources. Despite their benefits, widespread adoption of EVs faces challenges like on-board chargers (OBC) with lighter weight, higher efficiency and higher power. There are two charging approaches …