A power supply device with improved current balancing mechanism includes a power supply module, and a current detecting module detecting the output current to generate a sample voltage. A compensation voltage is provided that is in superposition with the sample voltage to synthesizes a corrected sample voltage, and a current mirror unit receives the corrected sample voltage at a first end. A positive input end of a comparator unit is connected to a second end of the current mirror unit, and is connected to the first end through a voltage divider, while the comparator unit outputs the current share voltage under negative feedback control. The current share output is corrected by compensating the sampling voltage and reflecting it by a current mirror with a certain ratio, the inconvenience of manually adjusting variable resistor, or the problem of temperature influenced BJT and MOSFET, or phase delay of digital sampling is solved.

The present disclosure provides a DC power supply system, comprising: a first power supply circuit and a second power supply circuit, each power supply circuit comprises a phase-shifting transformer and an AC-DC conversion circuit; and a bidirectional electronic switch electrically coupled between the output end of the first power supply circuit and the output end of the second power supply circuit, wherein the bidirectional electronic switch is configured to transmit power between the output end of the first power supply circuit and the output end of the second power supply circuit depend on the voltage difference of the two output voltages.

A method and system creating a distributed network suitable for transferring information between devices. In particular, the present disclosure relates to power generating server devices designed to act as nodes within a distributed network. Specifically, the present disclosure provides specialized devices designed to generate power using solar panels to power servers that are capable of operating as nodes within a distributed network.

The present disclosure relates to a shared transfer switching system with built in relay testing ability, for transferring power received by a load from a preferred AC power source to an alternate AC power source, or transferring power being received by the load from the alternate AC power source to the preferred AC power source. The system selectively controls various ones of the relays used to apply power from either the preferred or alternate power sources to the load, such that the relays are switched from open to closed states at controlled times, while voltage measurements are made at select locations between the relays. The system can identify which specific ones of a plurality of relays associated with each of the preferred and alternate power sources has properly opened and closed, and thus verify that all of the relays needed to switch between the preferred and alternate power sources are operating properly.

A power conversion apparatus includes M first slots, wherein each of M first slots is electrically connected to an input side of one of N first bus bars, and a respective first slot of the M first slots is electrically connected to a first module that can supply an alternating current or a direct current to the first bus bar electrically connected to the first slot. The apparatus further includes P second slots, wherein each of the P second slots is electrically connected between an output side of one of the N first bus bars and an input side of one of second bus bars, and a respective second slot of the P second slots is electrically connected to a second module that converts an alternating current into a direct current or that converts a direct current into a direct current.

Various implementations described herein relate to a system including multiple nodes. Each node is one of a storage node, a compute node, or a computer-and-storage node. Each node includes a Bluetooth® connector configured to communicate over a Bluetooth® mesh network.

A power delivery system for data center. Servers are divided into server clusters, and each server cluster is served by multiple power source with multiple inputs from a power supply module. Each power supply module includes a local bus and a local controller which controls connections on the local bus to deliver utility power to its assigned server cluster or backup power to any of the server clusters. Each of the power supply modules has a battery storage system with switchable connections to the local bus and to an inter-system bus, and a PV system with switchable connections to the local bus and to an inter-system bus. The battery storage system may be charged from the utility power or the PV system. The inter-system bus is connected to all of the server clusters, such that power flowing in the inter-system bus can be delivered and dispatched to power any server cluster.

According to one embodiment, an Information Technology (IT) power system for a data center. The system includes a utility power source, an IT cluster that includes a several pieces of IT equipment. The cluster is coupled to the source and is configured to draw power from the source and provide the drawn power to the pieces of IT equipment. The system also includes a photovoltaic (PV) system that includes a PV panel that is arranged to convert solar radiation into direct current (DC) power. It also may include a voltage sensor and a controller that are configured to decouple the cluster from the source and to couple the cluster to the PV system such that the cluster draws the DC power directly from the PV panel when the output voltage of the PV panel sensed by the voltage sensor exceeds a threshold value.

A method and system of managing power within a data center and providing power to the load including IT equipment includes determining a required power level for a data center, and determining a level of renewable energy available from one or more renewable energy sources. The method also includes determining a level of power available within a primary storage system for the data center. In addition, the method includes selectively utilizing renewable energy from the renewable energy sources to charge the primary storage system or power server racks, a cooling system, or a lighting system.

The present disclosure relates to a power supply management system adapted for use with at least one utility proxy power source, to help control powering a load when an AC mains power source is not available to provide power to the load. The system has a power converter forming an uninterruptible power supply, and includes a controller configured to control operation of the power converter. A supplemental battery subsystem is included which is in communication with the power converter for supplying DC power to the power converter. The controller monitors the application of power from the utility proxy to the load and uses the DC power supplied by the supplemental battery subsystem, when needed, to supplement the generation of power by the power converter, to thus assist the power converter in powering the load along with the power being provided by the utility proxy.