Abstract: System for providing electrical power to wind turbine components comprising a busbar, an electrical grid, and an auxiliary power source for selectively providing electrical power to the busbar with an auxiliary power voltage, wherein the main voltage is different from the auxiliary power voltage. The system includes one or more wind turbines comprising a wind turbine generator, a main transformer for connecting the wind turbine generator to the busbar, one or more wind turbine components, and an auxiliary wind turbine transformer. The wind turbine components are arranged to be selectively connected to the main transformer and the busbar through a first path or a second path. The system is configured to select the first path if the voltage at the busbar is the main voltage and to select the second path if the voltage at the busbar is the auxiliary power voltage.

Abstract: A load arrangement powers loads on a surface (30) of a marine structure exposed to a fouling liquid (10), and has a transmitter arrangement (110) and at least one carrier medium (100) having embedded loads (20). Front electrodes (130) are arranged to be coupled to the liquid, and back electrodes (120) have back electrically conductive layers embedded in the carrier medium to form, in combination with an opposite area of the marine 5 structure and a dielectric layer (4a), a back capacitor for capacitive transfer of the supply current between the second power node and one pole of the power source coupled to the marine structure. The transmitter arrangement has a supply line (111) and a multitude of transmitters (114) galvanically connected to the supply line. The multitude of transmitters is distributed along the supply line to be arranged near the multiple front electrodes to form 10 short conductive paths (113).

Abstract: A device includes a connection unit, a load unit, a voltage detection unit, and a determination unit. The connection unit is connected to a power supply apparatus. The load unit operates as a constant power load. The voltage detection unit detects a first output voltage of the power supply apparatus when the load unit operates in a first operation mode, and detects a second output voltage of the power supply apparatus when the load unit operates in a second operation mode. The determination unit determines a type or an output capacity of the power supply apparatus, based on the detected first output voltage and the detected second output voltage.

Abstract: A control device is configured to control a first boost converter and a second boost converter. The control device is configured such that, when a prescribed state where an output of the second boost converter cannot be made at a ratio of an output voltage to an input voltage in the second boost converter to be equal to or more than a predetermined value is detected, the control device calculates a target output voltage of a fuel cell by using an voltage on an input side or an output side of the second boost converter measured by a measuring portion and a first value which is equal to or larger than a minimum boost ratio of the first boost converter, and controls the fuel cell so that an output voltage of the fuel cell is equal to or lower than the target output voltage.

Abstract: A magnetic flux coupler comprising a magnetically permeable core having a first axis, two coils magnetically associated with the core, each coil defining a pole area located on a first side of the core and the pole areas being separated along the first axis, the coils each having a central region located between the pole areas, an end region opposite to the central region, and a side region between the central region and the end region, wherein an auxiliary pole area is provided beyond the end region of each coil which absorbs leakage flux which would otherwise emanate from the each coil in use in the vicinity of the end region.

Abstract: The disclosure relates to a method and an assembly for load management of electrical components of a local electrical system connected to a superordinate grid via a common grid connection point. A superordinate server creates a schedule for the controlling electrical components and, if possible, transmits the schedule to a local control unit. The local control unit implements the schedule received or, if a current schedule is not available, implements a standard schedule. The grid connection point is monitored to ensure that the power does not exceed a specified power limit value. If this is the case, the schedule currently being used to control the components is modified according to a specified scheme. If the power limit value is not adhered to within a predetermined time, a monitoring device switches off the power connection of individual components in accordance with a specified scheme.

Abstract: A furniture electrical system includes an electrical power unit including a housing that is mountable to a furniture article and that defines an interior cavity, with a low voltage DC electrical outlet positioned in the interior cavity. An electrical power cord is in electrical communication with the electrical outlet and exits the housing, the power cord extending to a higher voltage DC power supply associated with an electric motor for raising and lowering a furniture article. An electrical power converter in the housing reduces the voltage from the higher voltage DC power supply to the low voltage DC electrical outlet. Optionally, an indicia lamp associated with each outlet illuminates at a first luminous intensity when the outlet is energized, and illuminates at a different second luminous intensity when the outlet is energized and supplying power to an electrical power consumer.

Abstract: The present invention provides a chip comprising a circuit module, a power switch and a detection and control circuit. The power switch is coupled between a supply voltage and the circuit module, and is used to selectively connect the supply voltage to the circuit module, and control a current amount flowing into the circuit module according to at least a control signal. The detection and control circuit is coupled to the power switch, and is used to detect a first signal generated by a first circuit positioned surrounding the circuit module, and compare the first signal with a second signal in a real-time manner to generate the control signal to adjust the current amount flowing into the circuit module.

Abstract: A vehicle power management system includes a primary power bus for powering a first non-critical load, a secondary power bus for powering a second non-critical load, and a first relay electrically connected between the primary power bus and the first non-critical load. The vehicle power management system further includes a second relay electrically connected between the secondary power bus and the second non-critical load. The first inductor is electrically connected to the secondary power bus and the second inductor is electrically connected to the primary power bus.

Abstract: A light system includes a plurality of light towers including a first light tower and a second light tower. Each light tower include a light source, a rechargeable battery operable to provide electrical power to the light source, and a control system programmed to control the flow of power to and from the rechargeable battery. The light system further includes a power/network cord electrically connecting the first light tower to the second light tower, a power source, and a power recharge cord arranged to electrically connect the first light tower to the power source. The power recharge cord is operable to provide electrical power from the power source to the first light tower and from the first light tower to the second light tower via the power/network cord. Each control system is programmed to selectively activate the power source to initiate a recharge cycle for the respective rechargeable battery.

Abstract: A method for operatively coupling a plurality of generating units in at least one micro-grid to a bulk grid, where the at least one micro-grid is configurable to be operatively coupled to the bulk grid via a point of interconnection breaker is presented. The method includes, using a control unit operatively coupled to the at least one micro-grid and the bulk grid, determining one or more bulk grid side parameters and one or more micro-grid side parameters, comparing one or more of the one or more micro-grid side parameters with corresponding one or more bulk grid side parameters, and synchronizing each of the plurality of generating units in the at least one micro-grid with the bulk grid based on the comparison. Further, the method includes connecting simultaneously, using the point of interconnection breaker, each of the plurality of generating units to the bulk grid based on the synchronization.

Abstract: An uninterruptible power supply includes an AC power source that supplies AC power to a load and includes a main AC input power source, an electromagnetic contactor provided between the AC power source and the load and excited to be switched on or off, and a first switch that switches between a first AC voltage of the main AC input power source and a second AC voltage capable of being supplied independently of the first AC voltage so as to excite the electromagnetic contactor.

Abstract: A frequency regulation and ramp rate control system includes a battery configured to store and discharge electric power, a battery power inverter configured to control an amount of the electric power in the battery, a photovoltaic power inverter configured to control an electric power output of a photovoltaic field, and a controller. The controller generates a battery power setpoint for the battery power inverter and a photovoltaic power setpoint for the photovoltaic power inverter. The generated setpoints cause the battery power inverter and the photovoltaic power inverter to simultaneously perform both frequency regulation and ramp rate control.

Abstract: A method for providing frequency load shedding in a power distribution network. The network includes a number of distributed switch-gear assemblies that control whether AC power is provided to groups of loads. The distributed switch-gear assemblies monitor the frequency of the AC signal to determine if a frequency event is occurring and also determine the direction of the power flow at the time of the event. The switch-gear assembly may open in an underfrequency event only if the loads are drawing power from the network, and the switch-gear assembly may open in an overfrequency event only if there is reverse power flow during the event. In addition, the order of operation of which switch-gear assemblies may open first in response to the frequency event is determined in advance by the location of the switch-gear assembly in the network and a corresponding time delay and coordinated frequency set-points.

Abstract: A photovoltaic power source includes a receptacle to receive a photofuel including a liquid, and one or more photovoltaic cells positioned within the receptacle to receive light emitted from the photofuel when the photofuel is in the receptacle. The photovoltaic power source also includes power circuitry coupled to the one or more photovoltaic cells to receive a photocurrent generated by the one or more photovoltaic cells when the one or more photovoltaic cells receive the light emitted from the photofuel. In response to the photocurrent, the power circuitry is coupled to output electricity.

Abstract: A vehicle includes: a power receiving part; an operating part configured to allow a driver to select a parking lock state or a non-parking lock state; a parking lock device configured to be mechanically switchable between the parking lock state and the non-parking lock state; and a controller configured to control the parking lock device according to an electric signal output from the operating part. While the power receiving part is receiving electric power with the parking lock device being in the parking lock state, the controller: sends a first command that commands stop of power feeding to the power receiving device to the power feeding device when the non-parking lock state is selected; and controls the parking lock device so that the parking lock device is switched from the parking lock state to the non-parking lock state after electric power has decreased to a predetermined value or lower.

Abstract: Disclosed is an optical disk drive for wireless power transmission. The optical disk drive in an embodiment of the present invention comprises a tray on which a optical disk is to be seated; a driving unit for rotating the optical disk to be seated on the tray and reading or writing the optical disk; a wireless power transmitting module to be seated on the tray and comprising a primary coil and a transmitting circuit unit; a power supply unit for supplying power; and a controller for controlling the power supply unit to supply power to the wireless power transmitting module when determining that the wireless power transmitting module is seated on the tray.

Abstract: A predictive power control system includes a battery configured to store and discharge electric power, a battery power inverter configured to control an amount of the electric power stored or discharged from the battery, and a controller. The controller is configured to predict a power output of a photovoltaic field and use the predicted power output of the photovoltaic field to determine a setpoint for the battery power inverter.

Abstract: A magnetic flux pad for receiving or generating magnetic flux. The pad includes two pole areas (11, 12) associated with a magnetically permeable core 14. Coils 17 define the pole areas. The pad allows useable flux to be generated at a significant height above a surface of the pad.

Abstract: A protective circuit for an apparatus includes an accelerometer having an output and a microcontroller coupled to the output of the accelerometer. The protective circuit also includes a switch for controlling the apparatus coupled to an output of the microcontroller and a load coupled to the switch. A power source is coupled to the load and the switch. In operation the microcontroller is cable of sending a signal to the switch to turn of power to the load when a dangerous condition as detected from the accelerometer data has occurred.