Abstract: A device for supplying electricity to at least one secondary electric load (30) on-board a turbomachine rotor (12) including a main circuit for transmitting main electric power to at least one main on-board electrical load (16), includes a device (15) for rotatably and electrically connecting the stator and the rotor, and at least one secondary circuit for transmitting a secondary electric power including at least one secondary conductor (28) of the stator connected to a secondary electric power source (29) suitable for outputting a secondary power in the form of a power signal with a secondary frequency selected such as to enable selective, interference-free transmission of the secondary power via the rotary electric connection device (15), separately from the main power transmission.

Abstract: An installation for transmitting electrical power between a first and a second alternating voltage network. A self-commutated converter can be connected to the second alternating voltage network, and is connected to a unidirectional rectifier by way of a direct voltage connection. The unidirectional rectifier can be connected to the first alternating voltage network on the alternating voltage side, and to a wind farm via said first alternating voltage network. The farm has at least one wind turbine feeding electrical power into the first alternating voltage network when wind speeds are greater than a switch-on wind speed. An energy-generating device can be connected to the first alternating voltage network and/or to the at least one wind turbine for providing electrical energy. The energy-generating device converts a renewable primary energy from its surroundings when wind speeds are lower than the switch-on wind speed for the wind turbine.

Abstract: A power supply system offshore plant comprises: a generator; an AC/DC converter converting, AC generated from the generator into DC to supply the direct current to a DC bus; a power load connected to the DC bus to generate regenerative power; a first power storage unit for storing power when a voltage of the DC bus is maintained at a level of a first threshold value or higher for a first time period, and supplying the stored power to the DC bus when the voltage of the DC bus is maintained at a level of a second threshold value or lower for a second time period; and a first resistance unit for consuming power when the voltage of the DC bus is maintained at the level of the first threshold value or higher for a third time period. The third time period is longer than the first time period.

Abstract: A solar panel is disclosed that can be daisy-chained with other solar panels. The solar panel automatically generates output alternative current (AC) power that is in parallel with input AC power coming into the solar panel when the solar panel senses the input AC power so that the solar panel operates as a slave in this state. The solar panel automatically generates standalone AC output power when the solar panel fails to detect input AC power coming into the solar panel where the solar panel operates as a master in this state. The solar panel generates the standalone output AC power without any reliance on input AC power generated by a utility grid and/or other AC power sources external to the solar panel.

Abstract: A wireless charging system including a first coil configured to be coupled to a transmitter driver circuit and arranged in a first plane, a second coil configured to be coupled to the transmitter driver circuit and arranged in a second plane and a third coil configured to be coupled to the transmitter driver circuit and arranged in a third plane. The transmitter driver circuit is configured to provide a time-varying current signal to one or more of the first coil, the second coil or the third coil. The first coil, the second coil and the third coil are concentric, the first plane is not parallel to the second plane and the third plane, and the second plane is not parallel to the third plane.

Abstract: According to one aspect, embodiments of the invention provide a UPS system comprising an input configured to receive input AC power, an output configured to provide output AC power to a load, a converter coupled to the input and configured to convert the input AC power into DC power, a DC bus configured to receive the DC power, an inverter configured to convert the DC power from the DC bus into output AC power and provide the output AC Power to the output, and a controller configured to receive an output AC output voltage level selection from a user, operate the inverter to generate the output AC power having an AC voltage level based on the output AC output voltage level selection, and operate the converter to generate the DC power having a DC voltage level based on the output AC output voltage level selection.

Abstract: Systems and devices that provide a shared detuning, damping, or filtering element to one or more capacitors. A number of circuit branches are coupled in parallel to each other between a first coupling point and a second coupling point. A subcircuit is coupled between the second coupling point and a third coupling point. Each branch includes at least one capacitor that provides reactive power to power systems while the subcircuit is configured to provide detuning, damping, or filtering to the multiple branches.

Abstract: A wireless power transmission apparatus for wirelessly transmitting power to a wireless power reception apparatus includes a first wireless power transmission module configured to wirelessly transmit power using a first method, a second wireless power transmission module configured to wirelessly transmit power using a second method, and a controller configured to control the first wireless power transmission module and the second wireless power transmission module. The first wireless power transmission module includes a first signal transmission unit configured to transmit a first signal for detecting the wireless power reception apparatus, a second signal transmission unit configured to transmit a second signal for determining whether the detected wireless power reception apparatus is capable of receiving power transmitted using the first method and a reception unit configured to receive a signal from the wireless power reception apparatus.

Abstract: A power system for a locomotive. The power system has a first power unit, a second power unit, a first inverter configured to power the first power unit or the second power unit, a second inverter configured to power the first power unit or the second power unit. Further the power system has a first controller selectively coupled to one of the first inverter or the second inverter to control the operation of the first inverter or the second inverter and a second controller selectively coupled to one of the first inverter or the second inverter to control the operation of the first inverter or the second inverter.

Abstract: Automatic transfer switch for switching an electrical load between two power sources. In one example, the automatic transfer switch includes four latching relays and an electronic controller. A first power source line connection is connected to an electrical load line connection via a first latching relay. A first power source neutral connection is connected to an electrical load neutral connection via a second latching relay. A second power source line connection is connected to the electrical load line connection via a third latching relay. A second power source neutral connection is connected to the electrical load neutral connection via a fourth latching relay. The electronic controller connects the second power source to the electrical load when a voltage of the first power source is less than a first threshold, and connects the first power source to the electrical load when the voltage is greater than a second threshold.

Abstract: A smart power storage and distribution system for buildings includes an energy storage device included in an uninterruptible power system (UPS). A system controller controls charging of the energy storage system via one or both of conventional grid power and/or the alternative power. The system controller also operates a plurality of electrical switches to switch the building's power source between power from the utility grid and/or from the energy storage system. The controller also communicates with smart outlets within the building to selectively turn the power on/off to each smart outlet according to programmed logic or remote commands from a user. Various types of data can be monitored throughout the house/building and transmitted to the cloud. The source of electrical power to the building, or to charge the UPS, can be selectively switched to correspond to the most advantageous electrical grid monetary rates.

Abstract: A first power source line disposed between a positive electrode side of an electricity storage unit and a first external terminal, a second power source line disposed between a negative electrode side of the electricity storage unit and a second external terminal, a power source circuit connected to both the first and second power source lines and configured to supply an output voltage to a control circuit in an operating state, a power source control circuit configured to control an operating state and a non-operating state of the power source circuit, a first control signal generation circuit configured to supply a first control signal corresponding to transition of an external voltage applied to the first external terminal and the second external terminal to the power source control circuit to set the power source circuit in an operating state for a prescribed time, and a second control signal generation circuit configured to generate a second control signal that allows the power source circuit to be set i

Abstract: In one aspect, an apparatus for wirelessly transmitting power to a wireless power receiver comprises a transmitter circuit configured to transmit wireless power via a magnetic field at a first frequency and a second frequency, the second frequency different than the first frequency and is an integer multiple of the first frequency. The apparatus further includes a processor circuit configured to detect a presence of multiple wireless power receivers each being capable of receiving power via the magnetic field over at least one of the first and second frequency and further configured to identify frequency charging capabilities of each of the detected wireless power receivers. The transmitter circuit further configured to concurrently transmit wireless power to first and second wireless power receivers at the first frequency and the second frequency, respectively, based on the respective charging capabilities of the first and second wireless power receivers.

Abstract: Various embodiments of the present disclosure relate to an apparatus and method for controlling a differential signal of a wireless power transmitter. For example, an apparatus for controlling a differential signal of a wireless power transmitter may include a converter configured to convert a single signal into differential signals; an amplifier operably coupled to the converter and configured amplify power of the differential signals, thereby providing amplified differential signals; a gauge operably coupled to the amplifier and configured to measure a phase difference and amplitude between the amplified differential signals; and a controller for converting a pulse width of the differential signals by controlling the converter according to measurements by the gauge. Further, various embodiments of the present disclosure also include other embodiments other than the aforementioned embodiments.

Abstract: A power net system of a fuel cell vehicle is provided. The power net system includes a fuel cell and a first switching unit that is configured to form and block an electrical connection between an output terminal of the fuel cell and a main bus. A load device diverges and is connected between the output terminal and the first switching unit. A reverse current blocking unit is disposed between the output terminal of the fuel cell and a node from which the load device diverges and is configured to block a current flow to the output terminal of the fuel cell. A second switching unit is configured to form and block an electrical connection between the output terminal of the fuel cell and the load device. A controller operates the first and second switching units to form the electrical connection between the main bus and the load device.

Abstract: The current embodiments provide a switch device for a wireless pushbutton, wherein the switch device comprising an energy conversion mechanism, a signal output mechanism, an actuation device, and a plurality of encoding contacts. The actuation device may be configured to establish contact with at least one of the plurality of encoding contacts when a first quantity of an actuation force is applied for generating an encoded signal. The actuation device may be configured to activate the energy conversion mechanism to generate energy when a second quantity of an actuation force greater than the first quantity is applied to the activation device. The signal output mechanism may be configured to transmit a wireless output signal using the encoded signal when the energy conversion mechanism is activated.

Abstract: According to one aspect, embodiments herein provide a power converter configured to monitor at least one of current and voltage at a bidirectional AC load terminal, determine, based on the monitoring, whether the power converter is receiving AC power from at least one Photo-Voltaic (PV) inverter or whether AC power is being drawn from the power converter by at least one load, determine whether an energy storage device coupled to the power converter is fully charged, and in response to a determination that the power converter is receiving power from the at least one PV inverter and a determination that the energy storage device is not fully charged, operate a power conversion unit in the power converter to convert the AC power received from the at least one PV inverter into DC power and provide the DC power to a bidirectional DC terminal to charge the energy storage device.

Abstract: The disclosed embodiments provide a system that operates a power supply. During operation, the system obtains power states of two or more loads coupled to two or more power converters in the power supply. Next, the system generates one or more control signals for a set of switching mechanisms to configure a coupling of the two or more loads to the two or more power converters through the switching mechanisms based on the power states.

Abstract: Devices (1) for controlling gates (21-24) arranged to control amounts of power to be supplied to loads (51-54) via cables (2) may comprise receivers (11) for receiving requesting signals from the gates (21-24), analyzers (12) for analyzing requests defined by the requesting signals in view of available cable power capacities, generators (13) for in response to analysis results generating instructions for the gates (21-24) and transmitters for transmitting instructing signals defining the instructions to the gates (21-24). The analyzers (12) may analyze the requests in view of load-information comprising steady-state-information/transient-state-information. The devices (1) may comprise communicators (15) for communication with auxiliary converters (31-33) coupled to auxiliary sources (41-43) such as batteries (41) and solar panels (42, 43) and may comprise predictors (16) for predicting the available cable power capacities.

Abstract: A non-contact type power transmitting coil may include at least one conductor pattern disposed on at least one surface of a base having a predetermined area, having a plurality of turns, and transmitting received power externally in a non-contact manner. The intervals between at least some of adjacent pattern portions of the conductor pattern in a direction from a center portion of an inner diameter of the conductor pattern to an outermost pattern portion conductor pattern may be different from one another.