Abstract: A multi-medium vehicle system is disclosed which uses a common controller to at least partially control each of a plurality of vehicles to move a common payload through multiple transportation mediums. Each vehicle may be designed for a particular transportation medium, such as air, land, water or other medium. The vehicles may be coupled together to share the common controller and may uncouple for transportation purposes. The vehicle that delivers the payload to the destination remains coupled to the common controller, while other vehicles may uncouple from the common controller before delivery. A method of use is also disclosed.

Abstract: Rapidly responsive energy storage means enable the creation of a multi-port DC bus in a UPS, enabling the multi-port DC bus to couple a plurality of intermittent DC sources and intermittent DC loads. The invention includes renewable energy power systems with a UPS having a multi-port DC bus and a responsive energy storage means electrically coupled to the multi-port DC bus. An embodiment includes a renewable energy power system with a UPS having a multi-port DC bus having at least one coupling in addition to the minimum of three required for a UPS to operate. The additional coupling is adapted to couple either a DC load or a DC source to the multi-port DC bus. A responsive energy storage means is coupled to supply power to the multi-port DC bus and is operable to maintain a substantially constant power level on the multi-port DC bus.