Patent application number | Description | Published |
20100295374 | METHOD AND APPARATUS FOR PROVIDING UNINTERRUPTIBLE POWER - At least one aspect is directed to an uninterruptible power supply that includes a first input having an input line connection and an input neutral connection to receive a first input voltage from a first voltage source, a second input to receive a second input voltage from a second voltage source, and a boost circuit configured to provide a positive output DC voltage with respect to the input neutral connection and a negative output DC voltage with respect to the input neutral connection in both a line mode of operation and a backup mode of operation. The power supply also includes a first connection circuit to couple the first input to the boost circuit in the line mode of operation, and a second connection circuit to couple the second input to the boost circuit in the backup mode of operation, the second connection circuit being configured to isolate the second voltage source from the input neutral connection in the line mode of operation. | 11-25-2010 |
20120098336 | Fuel Cell Control Device and Method - A method includes controlling multiple networked input-parallel/output-parallel inverters of a fuel cell system as a single inverter assembly by a master controller. A fuel cell system includes a plurality of fuel cell segments, a plurality of DC/DC converters and at least one DC/AC inverter, where an output of each of the plurality of the fuel cell segments is connected to a pair of DC/DC converters, and each of the pair DC/DC converters is connected to an opposite polarity bus being provided to the inverter. | 04-26-2012 |
20120146587 | Fuel Cell System with Grid Independent Operation and DC Microgrid Capability - A fuel cell system includes grid independent operation with DC microgrid capability. This fuel cell system has a capability of operation with and without the grid, and with DC micro-grid capability. | 06-14-2012 |
20120267952 | DC Micro-Grid - Systems and methods are provided for creating and operating a Direct Current (DC) micro-grid. A DC micro-grid may include power generators, energy storage devices, and loads coupled to a common DC bus. Power electronics devices may couple the power generators, energy storage devices, and loads to the common DC bus and provide power transfer. | 10-25-2012 |
20120326504 | B-Side Feed for Critical Power Applications - A method of providing power to a load, such as an IT load, includes generating an output power using at least one power module comprising at least one fuel cell segment, providing a first portion of the output power through a grid to an A-side power feed of the load, and providing a second portion of the output power to a B-side power feed of the load. | 12-27-2012 |
20120326516 | Fuel Cell Power Generation System with Isolated and Non-Isolated Buses - A fuel cell system provides isolation of one or more DC buses which supply power to a DC IT load from AC noise generated by AC inverters or the AC grid using one or more isolating DC/DC converters. | 12-27-2012 |
20120326668 | ELECTRICAL VEHICLE CHARGING USING FUEL CELL SYSTEM - A battery charging station receives power from two or more sources and supplies power to charge batteries of electric vehicles and devices. | 12-27-2012 |
20130009481 | Integrated Fuel Cell System with Auxiliary Power Delivery - A method of providing electrical power using a split bus configuration includes receiving a first direct current at a positive bus of a split bus, where the first direct current originates from a first fuel cell segment. A second direct current is received at a negative bus of the split bus, where the second direct current originates from a second fuel cell segment. A third direct current is also received at the split bus such that a combined direct current is formed including the first direct current, the second direct current, and the third direct current. The third direct current originates from an alternative direct current (DC) source. The combined direct current is provided to an inverter such that an alternating current is generated for a load. | 01-10-2013 |
20140009003 | Fuel Cell System with Variable Frequency Drive for Support Equipment - Various embodiments enable the operation of fuel cell system support equipment using variable frequency drives and power from fuel cells and/or grid power sources. | 01-09-2014 |