Abstract: Various embodiments manage a fuel cell IT grid system to maintain fuel cell temperatures above a threshold temperature. The system may include power modules each including a fuel cell, DC/DC converters each connected to a power module, a DC power bus connected to the DC/DC, IT loads each connected to the DC power bus, a load balancing load connected to the DC power bus, and a control device connected to a first power module. The control device may determine whether a temperature of the first power module exceeds the temperature threshold, determine whether an electrical power output of the power modules exceeds an electrical power demand of the IT loads in response to the temperature exceeding the temperature threshold, and direct excess electrical power output to the load balancing load in response to the electrical power output exceeding the electrical power demand.

Abstract: A power module system includes a plurality of vertically stacked power modules. The plurality of vertically stacked power modules include at least two vertical stacks. A shared exhaust plenum is located between the at least two vertical stacks of power modules.

Abstract: 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.

Abstract: An overvoltage snubber circuit configured to receive an alternating current (AC) overvoltage includes a first rectifier configured to convert the AC overvoltage to a direct current (DC) overvoltage, a chopper circuit electrically connected to the first rectifier and configured to break up the DC overvoltage and to output a variable DC voltage, and a resistor electrically connected to the chopper circuit and configured to dissipate energy of the variable DC voltage.

Abstract: A fuel cell system having a power module including at least one fuel cell segment, an input output module including at least one inverter, a rectifier, and an electric distribution module having at least a first electrical connector and a second electrical connector. The at least one fuel cell segment may be electrically connected to the at least one inverter and may be electrically connected to an information technology (IT) load via a split bus. The at least one inverter may be electrically connected to an alternating current (AC) source via the first electrical connector of the electric distribution module.

Abstract: Systems, methods, and devices of the various embodiments enable parallel control of multiple uninterruptable power modules (“UPMs”) connecting multiple power sources to a bus in parallel. A UPM may be comprised of at least one controller coupled to at least one inverter, and the UPM may be configured to convert the DC voltage output from a DC source to an AC voltage, such as an AC voltage suitable for output to an AC bus. A UPM may receive a power sharing command and control its at least one inverter based at least in part on the received power sharing command to output a voltage to a bus.

Abstract: An electrical power system, including a fuel cell system having a plurality of fuel cell segments and an energy storage system electrically coupled to the fuel cell system. The energy storage system including a plurality of energy storage system technologies, an energy storage system direct current (DC) bus configured to electrically connect the plurality of energy storage system technologies to the fuel cell system, and an energy storage system technologies management system configured manage impedance of the energy storage system and electric coupling of the energy storage system and the fuel cell system.

Abstract: An overvoltage snubber circuit configured to receive an alternating current (AC) overvoltage includes a first rectifier configured to convert the AC overvoltage to a direct current (DC) overvoltage, a chopper circuit electrically connected to the first rectifier and configured to break up the DC overvoltage and to output a variable DC voltage, and a resistor electrically connected to the chopper circuit and configured to dissipate energy of the variable DC voltage.

Abstract: Systems, methods, and devices of the various embodiments enable parallel control of multiple uninterruptable power modules (“UPMs”) connecting multiple power sources to a bus in parallel. A UPM may be comprised of at least one controller coupled to at least one inverter, and the UPM may be configured to convert the DC voltage output from a DC source to an AC voltage, such as an AC voltage suitable for output to an AC bus. A UPM may receive a power sharing command and control its at least one inverter based at least in part on the received power sharing command to output a voltage to a bus.

Abstract: Systems are provided for creating and operating data centers. A data center may include an information technology (IT) load and a fuel cell generator configured to provide power to the IT load.

Abstract: Methods are provided for creating and operating data centers. A data center may include an information technology (IT) load and a fuel cell generator configured to provide power to the IT load.

Abstract: Cable grommets for use with raised-floor tiles permit the passage of cables while simultaneously limiting the amount of cool air escaping from under-floor ducts and plenums. The cable grommet includes a floor tile mounting flange, one or more pairs of opposed, overlapping finger assemblies, and one or more pairs of opposed finger mounting flanges for coupling the finger assemblies to the underside of the floor tile mounting flange. The edges of the of the triangularly-shaped fingers are configured to flex around the cables while the interior core section remains generally rigid and parallel to the plane of the floor to restrict the loss of cooling air. Alternatively, the cable grommet includes a floor tile mounting flange and a finger panel defining a sinusoidal cut along its length and a plurality of intersecting short cuts.

Abstract: An aisle enclosure system including ceiling bracket assemblies, ceiling panels, vertical blanking panels, aisle duct adaptors, and accessory rails, for use with equipment racks and ceiling structures in hot-aisle and cold-aisle data centers. The ceiling assemblies may be mounted to the tops of the racks or may be suspended from an area above the racks. The aisle enclosure system further includes a moveable structure that is configured and adapted to position a ceiling panel in an closed position when the moveable structure is in a first position, and position the ceiling panel in an open position when the moveable structure is in a second position, where the moveable structure is configured and adapted to move from the first position to a second position in response to an alarm condition.

Abstract: 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.

Abstract: Methods are provided for creating and operating data centers. A data center may include an information technology (IT) load and a fuel cell generator configured to provide power to the IT load.

Abstract: Systems are provided for creating and operating data centers. A data center may include an information technology (IT) load and a fuel cell generator configured to provide power to the IT load.

Abstract: 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.

Abstract: Cable grommets for use with raised-floor tiles permit the passage of cables while simultaneously limiting the amount of cool air escaping from under-floor ducts and plenums. The cable grommet includes a floor tile mounting flange, one or more pairs of opposed, overlapping finger assemblies, and one or more pairs of opposed finger mounting flanges for coupling the finger assemblies to the underside of the floor tile mounting flange. The edges of the of the triangularly-shaped fingers are configured to flex around the cables while the interior core section remains generally rigid and parallel to the plane of the floor to restrict the loss of cooling air. Alternatively, the cable grommet includes a floor tile mounting flange and a finger panel defining a sinusoidal cut along its length and a plurality of intersecting short cuts.

Abstract: A frame for use with cabinets and enclosures that house electronic equipment to prevent warm air from entering into, and cool air from exiting out of, the cabinet through gaps between the structural members of the cabinet. The frame is a singular piece of material that replaces, and provides the functions of, both vertical and horizontal structural members, and may also include EIA-standard mounting holes. The top and bottom of the frame's interior may be concave to direct cooling air into, or heated air out of, the cabinet. Alternatively, a pair of angled vertical rails may be mounted to the vertical structural members of the cabinet to block the air gaps.

Abstract: Horizontally-mounted rail tracks are adjustably coupled to vertical rack mount rails with slidable connectors. The rail tracks are configured to contain the connectors while allowing the connectors to traverse the length of the rail track. The connectors are coupled to the rails via a threaded stud that projects through an opening in the rail, and a pair of support tabs that protrude through slots in the rail. The rail tracks comprise positioning slots that are visible through windows on the rails. The connectors include an indicator band in a color that contrasts with the color of the rail track, such that the indicator band is visible through one the positioning slots, to enable the user to vertically align both ends of the rails with respect to the tracks. The rails are coupled to the rail tracks via index tabs that engage index slots on the rail tracks, and the rails are locked into place with threaded female connectors.