Systems and method for synchronizing power generators with a power grid are provided. One system among various implementations includes a plurality of synchronization modules, wherein each synchronization module corresponds to one power generator. The synchronization modules are configured to output a control signal to adjust a frequency of the respective power generator to correspond with the frequency of the existing power grid. The system also includes a central controller in communication with the plurality of synchronization modules. The central controller is configured to determine a propagation delay with respect to each synchronization module. The propagation delay is a measure of time for a signal to propagate from the respective synchronization module to the central controller. The central controller is further configured to send a control signal to each synchronization module to control when each synchronization module connects the respective power generator to the existing power grid.

Systems and method for synchronizing power generators with a power grid are provided. One system among various implementations includes a plurality of synchronization modules, wherein each synchronization module corresponds to one power generator. The synchronization modules are configured to output a control signal to adjust a frequency of the respective power generator to correspond with the frequency of the existing power grid. The system also includes a central controller in communication with the plurality of synchronization modules. The central controller is configured to determine a propagation delay with respect to each synchronization module. The propagation delay is a measure of time for a signal to propagate from the respective synchronization module to the central controller. The central controller is further configured to send a control signal to each synchronization module to control when each synchronization module connects the respective power generator to the existing power grid.

A power conversion apparatus includes: a plurality of cell blocks connected in cascade; and a plurality of bypass circuits each electrically connected in parallel with a corresponding one of the plurality of cell blocks. Each cell block includes: a first connection node on a high-potential side and a second connection node on a low-potential side for connection to another cell block; and a plurality of cell converters connected in cascade between the first connection node and the second connection node, each of the cell converters including an energy storage device. When a DC fault current flows in the direction from the low-potential side to the high-potential side, the current path via the plurality of cell blocks is larger in impedance than the current path via the plurality of bypass circuits.

A hydropower plant for regulating the frequency of an electric grid has an upper water reservoir; a lower water reservoir; a waterway that connects the upper water reservoir with the lower water reservoir. A turbine that is arranged in the waterway includes a runner, a guide vane apparatus and a device for blowing out the runner space. An electric synchronous machine is mechanically connected to the turbine and a frequency converter is electrically connected to the synchronous machine. A mains transformer is electrically connected to the frequency converter and the mains grid. A resistor is connected in a DC intermediate circuit of the frequency converter in such a way that it may connect the line sections of the DC intermediate circuit to one another. The assembly also includes a device for cooling the resistor.

Techniques, systems, and articles of manufacture for reducing conversion losses and minimizing load via appliance level distributed storage. A method includes identifying an alternating current power source associated with a direct current-powered device, determining a storage scheme for storing direct current power, converted from alternating current power input from the identified alternating current power source, in a local storage component associated with the direct current-powered device, and managing output of direct current power to the direct current-powered device based on the storage scheme and the identified alternating current power source.

Techniques, systems, and articles of manufacture for reducing conversion losses and minimizing load via appliance level distributed storage. A method includes identifying an alternating current power source associated with a direct current-powered device, determining a storage scheme for storing direct current power, converted from alternating current power input from the identified alternating current power source, in a local storage component associated with the direct current-powered device, and managing output of direct current power to the direct current-powered device based on the storage scheme and the identified alternating current power source.

Intermittently re-distributing power from three phases of a power grid connected to power consuming components of a data center by configuring power supply units (PSUs) which are integrated into each enclosure, two PSUs per enclosure. The distribution is determined by machine logic to: (i) meet the predicted power requirements of the power consuming components of the data center, and (ii) the use of first phase, second phase and third phase electrical powers is at least approximately in balance.

Intermittently re-distributing power from three phases of a power grid connected to power consuming components of a data center by configuring power supply units (PSUs) which are integrated into each enclosure, two PSUs per enclosure. The distribution is determined by machine logic to: (i) meet the predicted power requirements of the power consuming components of the data center, and (ii) the use of first phase, second phase and third phase electrical powers is at least approximately in balance.

Subsea power supply assembly supplying electric power to a motor at a second location from a first location. The subseas power supply assembly includes a variable speed drive (VSD) and a step-up transformer connected to it. At a subsea location the assembly includes a first step-down transformer with input and output and an uninterruptible power supply having an input. A step-out cable supplies power from the step-up transformer to the motor. The cable connects to the first step-down transformer. The speed of the electric motor is proportional to the output frequency of the VSD. The power receiving input of the uninterruptible power supply connects to the output of the first stepdown transformer, thereby receiving electrical power with frequency equal to the output frequency of the VSD.

Subsea power supply assembly supplying electric power to a motor at a second location from a first location. The subseas power supply assembly includes a variable speed drive (VSD) and a step-up transformer connected to it. At a subsea location the assembly includes a first step-down transformer with input and output and an uninterruptible power supply having an input. A step-out cable supplies power from the step-up transformer to the motor. The cable connects to the first step-down transformer. The speed of the electric motor is proportional to the output frequency of the VSD. The power receiving input of the uninterruptible power supply connects to the output of the first stepdown transformer, thereby receiving electrical power with frequency equal to the output frequency of the VSD.