In this paper, discusses a load matching method that allows for simultaneous power supply to multiple devices in wireless power transfer. Wireless power transfer is expected to improve our standard of living and increase productivity, leading to ongoing research and product development. However, with respect to the electromagnetic induction method, challenges have been raised regarding positional displacement, transmission distance, and the difficulty of simultaneously powering multiple devices. There has been prior research on the LC booster method, which solves the problems of displacement and transmission distance through load compatibility, but the challenge of simultaneous power supply to multiple units are remaining. This paper further develops the LC booster method, successfully addressing those challenges all at once. Moreover, by innovating the receiving coil, it also became possible to adjust the receiving voltage, which was not feasible with conventional methods.

In this paper, examines on the effects of voltage dips on DC home appliances connected to DC power supply.

The DC home appliances used in this experiment are designed with circuits configured to operate on DC power supply. As a result, the DC home appliances prove to depends on the depth and duration of the voltage dips. The effect governed by the ratio between power consumption and capacitors in each DC home appliance.

This allowed us to understand the operational characteristics of each DC home appliance and the extent to which the relationship between power consumption and capacitors affects their operation.