High-Efficiency High-Density Critical Mode Rectifier/Inverter for WBG-Device-Based On-Board Charger

High Efficiency Isolated AC/DC Converter with Gradationally Controlled Voltage Inverter for On-board Charger

We have developed a new isolated AC/DC converter for electric vehicle on-board chargers. It consists of an AC/DC converter with Gradationally Controlled Voltage Inverter (GCVI AC/DC converter) and an isolated Zero-Voltage-Switching (ZVS) DC/DC converter, each of which is optimally controlled to convert in a highly efficient means. As a result, the new on-board charger has achieved a power conve...

Design and Implementation of High Efficiency, High Power Density Front-End Converter for High Voltage Capacitor Charger

High Efficiency, High Density, PolyPhase Converters for High Current Applications

As logic systems get larger and more complex, their supply current requirements continue to rise. Systems requiring 100A are fairly common. A high current power supply to meet such requirements usually requires paralleling several power regulators to alleviate the thermal stress on the individual power components. A power supply designer is left with the choice of how to drive these paralleled ...

High-Bandwidth, High-Efficiency RF Amplitude Modulation for On-Board Transmit Amplifiers

Introduction Switching RF amplifiers appear to be a promising alternative for on-board transmit amplifiers due to its high efficiency and high isolation to neighboring elements [1,2]. We have shown that the current mode class-D amplifier (CMCD) allows a direct control of the current through the coil, resulting in a B1 field, which is potentially less sensitive to load changes than some other al...

An Improved Architecture for High-Efficiency, High-Density Data Centers

Data center power and cooling infrastructure worldwide wastes more than 60,000,000 megawatt-hours per year of electricity that does no useful work powering IT equipment. This represents an enormous financial burden on industry, and is a significant public policy environmental issue. This paper describes the principles of a new, commercially available data center architecture that can be impleme...