Abstract: According to one aspect, embodiments herein provide a power switching circuit, comprising a first terminal, a second terminal, a third terminal, and a plurality of switching devices, each switching device having a first transistor having a first gate, a first source, and a first drain, a second transistor having a second gate, a second source, a second drain coupled to the first source, and a bipolar body diode coupled between the second drain and the second source, and a unipolar diode configured to prevent a transition voltage applied across the first gate and the first source from exceeding a degradation threshold of the first transistor during a transition period, wherein a first switching device of the plurality of switching devices is coupled between the first and third terminals and the and a second switching device of the plurality of switching devices is coupled between the second and third terminals.

Abstract: Methods and systems are described for power state management. A critical usage window may be configured at a gateway node. A change in a power state of the gateway node may be detected, at an interface, during the critical usage window. The power state of the gateway node may be adjusted via the interface for a set duration using a backup power node.

Abstract: A power converter system including a DC bus, a DC/DC converter coupled to the DC bus, an inverter coupled to the DC bus and configured to convert DC power from the DC bus into output AC power having an output current, an output coupled to the inverter and configured to provide the output AC power to a load, and at least one controller configured to identify an impending high-load transient state at the output, and in response to identifying the impending high-load transient state, reduce a peak value of the output current of the output AC power by operating the DC/DC converter to reduce a voltage level on the DC bus and increasing a duty cycle of the inverter.

Abstract: Methods and systems are described for power state management. A critical usage window may be configured at a gateway node. A change in a power state of the gateway node may be detected, at an interface, during the critical usage window. The power state of the gateway node may be adjusted via the interface for a set duration using a backup power node.

Abstract: A system for determining and displaying in a graphical user interface one or more of air temperature, pressure, or velocity in an information technology (IT) room including an IT equipment rack comprises a processor configured to receive an input comprising airflow resistance parameters through the rack, an IT equipment airflow parameter, a heat-dissipation parameter, an external pressure, and an external temperature, to run the input through a flow-network solver that solves for airflow velocities through at least one face of the rack and a rack air outflow temperature based on the input, provide an output including the airflow velocities and the rack air outflow temperature, and generate, based on the output, a display in a graphical user interface of the system illustrating one or more of air temperatures, air pressures, or airflow velocities within the IT room.

Abstract: According to aspects of the disclose, a converter system includes a primary-side circuit configured to be coupled to an energy source, a secondary-side circuit configured to be coupled to a load, the secondary-side circuit including an energy storage device and at least one switching device configured to control a load current provided by the energy storage device to the load, and a controller configured to be coupled to the primary-side circuit and the secondary-side circuit, the controller being further configured to determine a parameter indicative of an energy level of the energy storage device, and control, based on the parameter indicating that the energy level of the energy storage device is below a discharge energy level, the at least one switching device to be in an open and non-conducting position.

Abstract: An aspect of the disclosure includes an uninterruptible power supply (UPS) system comprising a first input configured to receive input AC power, a second input configured to be coupled to an energy storage device having a backup runtime capacity, and a controller. The controller is configured to operate the UPS system to store a plurality of indications each indicating a number of times that the UPS system has regained access to the input AC power within a respective amount of time after the UPS system has stopped providing the output power, analyze the plurality of indications to determine an additional backup runtime capacity for reducing a number of load drops, determine a number of additional energy storage devices that provide the additional backup runtime capacity, and output the determined number of additional energy storage devices to add to attain the additional backup runtime capacity and reduce the load drops.

Abstract: Embodiments herein provide a UPS system comprising an input, a converter configured to convert input AC power into DC power, a DC bus configured to receive DC power from the converter, an inverter configured to convert DC power from the DC bus into output AC power, a Maximum Power Point Tracking (MPPT) controller configured to receive DC power from a power source and to identify a maximum power point of the power source, a DC-DC converter configured to regulate DC power provided from the MPPT controller to the DC bus, and a controller configured to determine whether the maximum power point of the power source is greater than or equal to at least one threshold level, and in response to determining that the maximum power point is greater than or equal to the at least one threshold level, operate the DC-DC converter to draw DC power from the MPPT controller at the maximum power point of the power source.

Abstract: Methods and systems for designing liquid cooled IT room architectures for an IT room using a graphical user interface include simultaneously displaying a configuration region and a results region in the graphical user interface, receiving a design parameter responsive to a user input of one of a plurality of user-selectable graphical user interface elements, determining a dielectric fluid return temperature based on an energy balance equation and a heat exchange equation, and responsive to receiving the design parameter and determining the dielectric fluid return temperature, dynamically displaying in the results region at least one of a first graph representing an amount of required room cooling power per a unit of area of the IT room or a second graph representing a surface temperature of at least one immersion-cooled equipment rack cooled by the architecture.

Abstract: According to one aspect, embodiments provide a system for optimizing control schemes executed by a plurality of intelligent agents controlling a plurality of client devices, the system comprising an observer configured to communicate with the plurality of intelligent agents, a database configured to store information received from the plurality of intelligent agents, and an external data source, the observer being further configured to poll the plurality of intelligent agents for operational information of at least one power device, collect information from the external data source and from the database, update the database based on the operational information and the information collected from the external data source and the database, and modify a first control scheme executed by a first intelligent agent of the plurality of intelligent agents to control a first client device.

Abstract: According to one aspect, embodiments of the invention provide a DC-DC power converter system comprising a positive bus interface, a negative bus interface, a positive battery interface, a negative battery interface, a first converter segment coupled to the positive bus interface and the negative bus interface, a transformer coupled to the first converter segment, a second converter segment coupled to the transformer, the positive battery interface, and the negative battery interface, a bus balancer circuit coupled to the transformer, and a controller configured to identify an imbalance between a positive voltage level on a positive DC bus and a negative voltage level on a negative DC bus, and in response to identifying the imbalance, operating the bus balancer circuit to convert the first converter segment, the transformer, and the second converter segment into an inverted buck-boost converter configured to transfer energy between the positive bus interface and the negative bus interface.

Abstract: According to an example, an uninterruptible power supply is provided comprising a first input, a backup input, an output to provide output power, an inverter coupled to the first input, the backup input, and the output, a first sensor to detect a voltage at an inverter output, a second sensor to detect a voltage at the first input, a switch coupled between the first input and the output, and a controller coupled to the switch and the first and second sensors, and configured to determine a first voltage difference across the bypass switch using at least one of the first sensor or the second sensor, filter the first voltage difference, determine whether a value derived from the first filtered voltage difference exceeds a threshold, and output an indication of a failure of the bypass switch based on the value derived from the first filtered voltage difference exceeding the threshold.

Abstract: Power systems, devices, and methods include a plurality of network interfaces for providing communication to, e.g., a management server, console, or user interface. One or more controllers coupled to power circuitry determine whether a preferred one of the network interfaces has connectivity, and directs communication over the preferred network interface in response to a determination that the preferred network interface does have connectivity. The controller directs communication over an alternate one of the network interfaces in response to a determination that the preferred network interface does not have connectivity.

Abstract: According to at least one aspect of the present invention, a system for automatically generating a data-center network mapping for automated alarm consolidation is provided comprising a plurality of devices, and at least one computing device communicatively coupled to each of the devices, the at least one computing device being configured to receive operational data from each of the devices, the operational data being indicative of at least one of a power path, cooling or temperature zones, or communications paths, determine, based on the operational data, device relationships between each of the devices, receive, from each of the devices, a respective alarm of a plurality of alarms, determine alarm relationships between at least two of the plurality of alarms, consolidate, based on the determined device relationships and based on the determined alarm relationships, the plurality of alarms into a consolidated alert, and provide the consolidated alert to a user.

Abstract: Systems and methods are provided for determining data center resource requirements, such as cooling and power requirements, and for monitoring performance of data center resource systems, such as cooling and power systems, in data centers. At least one aspect provides a system and method that enables a data center operator to determine available data center resources, such as power and cooling, at specific areas and enclosures in a data center to assist in locating new equipment in the data center.

Abstract: A system for removing condensate from a cooling unit (10) includes a drain pan (44) to collect condensate generated by the cooling unit (10), a condensate pump (52) configured to pump condensate from the drain pan (44), and a water tank (54) in fluid communication with the condensate pump (52). The water tank (54) is configured to store condensate in the form of water delivered to the water tank (54) by the condensate pump (52). The system further includes a plunger pump (60) in fluid communication with the water tank (54). The plunger pump (60) is configured to pump water from the water tank (54). The system further includes at least one atomizing nozzle (62) in fluid communication with the plunger pump (60). The at least one atomizing nozzle (62) is configured to atomize water from the plunger pump (60).

Abstract: According to one aspect, a DC power supply is provided. The power supply includes a first input configured to be coupled to an AC power source, a second input configured to be coupled to a battery, an output, a transformer, and a controller coupled to the transformer. The transformer includes a first winding configured to be coupled to the first input, a second winding configured to be coupled to the second input, and a third winding configured to be coupled to the output. The controller controls, in a first mode, the first winding to generate, based on power received from the AC power source, a first voltage across the second winding to charge the battery, and a second voltage across the third winding, and control, in a second mode, the second winding to generate, based on power received from the battery, a third voltage across the third winding.