Hitoshi Kudo

Development of reforming technology for a portable generator

Butane was investigated as a fuel for a portable generator using a polymer membrane fuel cell (PEFC). A steam reforming technology was applied and Ru was investigated as a catalyst for a reforming process and a selective oxidation process. It was found that Ru realized a high space velocity (SV) which enables reduction of a volume of the reformer. The reformer manufactured was connected with PEFC and operated using butane, indicating that a drop of the cell voltage was small enough. Concentration of CO in the reformate gas was less than 10 ppm.

Control method of wireless power transfer system for allowing coil position deviation

The purpose of this paper is to propose a new control method of wireless power transfer system that can maintain stable power supply even when the positions of the primary and secondary coil or distance between the two coils largely change. The new method will be done by adjusting the switching frequency to a frequency that can obtain the desired output. We confirmed the effectiveness of new wireless power supply control method through experimental result which show that the maximum horizontal position deviation that can obtain a 20W output is 2.8 times longer.