PowerWow Technology Inc. Patent applications |
Patent application number | Title | Published |
20140092649 | CONTACTLESS INDUCTIVELY COUPLED POWER TRANSFER SYSTEM - A contactless inductively coupled power transfer system includes a power supply device and a power receiving device. The power supply device includes a primary winding for generating an electromagnetic field (EMF) in response to an AC current flow having an operating frequency. The power receiving device includes a resonant circuit outputting an output voltage to a load and including a secondary winding and a reactance element. The reactance element is capable of forming a parallel resonant LC circuit with the secondary winding that resonates at the operating frequency, and forming a series resonant LC circuit that resonates at the operating frequency, and that is to be connected in series to the load. | 04-03-2014 |
20140028108 | INDUCTIVELY COUPLED POWER TRANSFER SYSTEM AND DEVICE - An inductively coupled power transfer (ICPT) system includes a primary winding for generating an electromagnetic field (EMF), and an ICPT device. The ICPT device includes a phase detecting winding which generates a detecting voltage according to the EMF, a resonant circuit which has an adjustable reactance and which generates an AC voltage according to the EMF and the adjustable reactance, and a control circuit which compares a phase of the AC voltage with a phase of the detecting voltage so as to determine whether said resonant circuit operates in an under-tuned or an over-tuned interval, and which varies the adjustable reactance according to the output voltage and one of the under-tuned and over-tuned intervals. | 01-30-2014 |