The possibilities of alternating current by no means stop with using a single source. Ordinary household current in the US is at 60 Hz and about 120 volts. We have, in other words, a single undulating ...

ORNL’s Omer Onar, left, power electronics research lead, discusses the 270-kW wireless charging system’s lightweight polyphase electromagnetic coupling coil, pictured in foreground, with Lee Slezak, ...

Abstract: The paper proposes a new framework for characterizing instantaneous non-active (reactive) power in general polyphase systems. The framework is based on the concept of multivectors, which are ...

Abstract: In a single-phase or balanced polyphase circuit, the two factors which are contributory to power factors less than unity are wave distortion and phase displacement between current and ...

Wireless power transfer (WPT) is an essential technology enabling automated charging of electric vehicles with safety, convenience, and flexibility while having high efficiencies. High-power wireless ...