摘要:
A hybrid power/propulsion system for a vehicle is provided that combines a fuel cell with a battery. A fuel cell, which uses a hydrogen and oxygen supply in fluid communication with the fuel cell, is combined with a battery system for power generation for a vehicle. The fuel cell is used when a low power is required by the vehicle, and the fuel cell is used in combination with the battery system when high power is required by the vehicle. The vehicle can be a land or marine vehicle, which can be a surface vessel or underwater vehicle.
摘要:
An apparatus for anti-islanding protection of a distributed generation with respect to a feeder connected to an electrical grid is disclosed. The apparatus includes a sensor adapted to generate a voltage signal representative of an output voltage and/or a current signal representative of an output current at the distributed generation, and a controller responsive to the signals from the sensor. The controller is productive of a control signal directed to the distributed generation to drive an operating characteristic of the distributed generation out of a nominal range in response to the electrical grid being disconnected from the feeder.
摘要:
A self-contained regenerative power system includes a fuel cell operative to generate electric energy from hydrogen and oxygen, generating water as a byproduct, and an electrolyzer operative to generate hydrogen and oxygen from water by consumption of electric energy. A bi-directional DC-to-DC converter interfaces between the fuel cell and the electrolyzer on one side and the system to be powered on the other. A switch selectively connects either the fuel cell or the electrolyzer with the bi-directional DC-to-DC converter. The products of the fuel cell process can be supplied to the electrolyzer process, and vice versa. Alternately, the self-contained regenerative power system comprises a unitary fuel cell and electrolyzer.
摘要:
An approach is provided for presenting polymorphic notes in a graphical user interface. A polymorphic note manager receives a request to display a plurality of polymorphic notes on a graphical user interface of a device. In response to the request, the polymorphic note manager determines an order of the plurality of polymorphic notes according to either an associated date or, if there is no associated date, a creation date corresponding to each of the plurality of polymorphic notes. The polymorphic note manager then causes, at least in part, actions that result in display of the plurality of polymorphic notes in the graphical user interface according to the determined order.
摘要:
A self-contained regenerative power system includes a fuel cell operative to generate electric energy from hydrogen and oxygen, generating water as a byproduct, and an electrolyzer operative to generate hydrogen and oxygen from water by consumption of electric energy. A bi-directional DC-to-DC converter interfaces between the fuel cell and the electrolyzer on one side and the system to be powered on the other. A switch selectively connects either the fuel cell or the electrolyzer with the bi-directional DC-to-DC converter. The products of the fuel cell process can be supplied to the electrolyzer process, and vice versa. Alternately, the self-contained regenerative power system comprises a unitary fuel cell and electrolyzer.