A5038726164- Advanced DC-DC Converters
- Wireless Power Transfer Systems
- Energy Harvesting in Wireless Networks
- Advanced Power Amplifier Design
- Induction Heating and Inverter Technology
- Cultural Heritage Materials Analysis
- Ion-surface interactions and analysis
- Multilevel Inverters and Converters
- GaN-based semiconductor devices and materials
- IoT-based Smart Home Systems
- X-ray Spectroscopy and Fluorescence Analysis
Chiba University
2018-2020
Osaka City University
2019
This paper presents a new design approach for the soft-switching resonant converter with satisfying multiple conditions. As an example, FM controlled class-E is designed. By applying inverter at part, works high efficiency frequencies. The has, however, problems, which are peak value of switch voltage and difficulty zero-voltage switching continuation against load variations. Additionally, there restriction on transformer voltage. In proposed approach, we can find proper component values,...
This paper presents a wireless power transfer system with the asymmetrical duty-cycle controlled class-D zero-voltage switching (ZVS) inverter and class-E rectifier along its analytical expressions design procedure. In control, resonant current of contains harmonic components. analysis, components are considered. Additionally, MOSFET anti-parallel diode effects included in for expressing ZVS operation. As result, accurate steady-state waveforms can be obtained from expressions. also shows...
This paper presents a frequency-modulation controlled resonant converter with the push-pull class-E inverter and class-D rectifier. The Class-E has no high-side switch in its topology, which is suitable to high-frequency operation. Additionally, it possible satisfy ZVS condition entire ranges of specified input-voltage load variations by applying inverter. region output-voltage contours are illustrated on parameter space, helpful for determine component values. validity design was confirmed...
The elucidation of the mechanism for steel corrosion under a coating layer has been attracting research attention. Herein, we utilized confocal micro-X-ray fluorescence (XRF) analytical instrument to conduct non-destructive elemental analysis near surface sheet. Using this method, map images sheet cross sections were obtained without sample destruction. To confirm suppression in presence Mg ions, observed behavior hot-dip galvanized sheets immersed an aqueous NaCl solution which ions added....
This paper presents steady-state analytical expressions of the class-D zero-voltage switching (ZVS) inverter with asymmetrical duty-cycle control for wireless power transfer applications. In control, output current contains harmonic components. The obtained consider components current. Additionally, MOSFET anti-parallel diode effect is included in expressing ZVS operation. As a result, waveforms can be high accuracy. also shows strategies against load variations, which one applications...
This paper proposes the phase-controlled class-D inverter with clamp diodes. In proposed inverter, one of resonant inductance is divided into two components and diodes are added to middle point inductance. By adding diodes, over currents can be suppressed effectively. Additionally, this gives an example design procedure for ensuring ZVS operation in full-range load variations. The effectiveness confirmed from transient responses experimental waveforms against sudden steady-state agreed...