Abstract: A system for exchanging electrical energy between an electrical energy source and an electrical energy store of a vehicle, wherein the system includes an electrical connection, at least one electronic component, and a cooling device having a heat transfer medium, wherein, when the electrical energy store of the vehicle is connected to the electrical connection and electrical energy is exchanged between the energy source and the electrical energy store via the at least one electronic component, the heat transfer medium of the cooling device is designed to provide heat, which arises during the exchange of electrical energy in the system, to a consumer of the heat, which is coupled to the system and is arranged in a building.

Abstract: A system and method are for managing the energy supplied to a transport vehicle. A first and a second source of energy provide electrical energy to power at least one piece of consumer equipment of the vehicle. An intermediate energy transmission system receives electrical energy provided by at least one of the two sources of energy and transfers it to the at least one piece of consumer equipment. An energy conversion-control system applies, at the input of the intermediate energy transmission system, the electrical energy to be provided, adjusted depending on the operational state of the first source of energy and on an input signal indicative of an operational state of the second source. The first source of energy includes an internal combustion engine connected to a permanent-magnet alternator that is placed between the internal combustion engine and the energy conversion-control system.

Abstract: A device for reactive power compensation in a high-voltage network contains a phase conductor. A high-voltage connection is provided for each phase of the high-voltage network. Each high-voltage connection is connected to a first high-voltage winding which surrounds a first core portion and to a second high-voltage winding which surrounds the second core portion. The core portions are part of a closed magnetic circuit. The low-voltage ends of each high-voltage winding can be connected to at least one saturation switching branch configured to saturate the core portions and has actuatable power semiconductor switches controlled by a control unit. To manufacture the device inexpensively, each saturation switching branch has a two-pole submodule having a bridge circuit and a DC voltage source so that, depending on the actuation of the power semiconductor switches, the DC voltage source can either be connected in series to the high-voltage winding or can be bridged.

Abstract: A system for wirelessly charging, via a medium, a device having a receiver coil comprises at least one relay configured to inductively transfer power to the receiver coil of the device and a transmitter configured to inductively transmit, to the at least one relay, power for charging the device. A joint resonance frequencies of a transmitter resonance circuit and a relay resonance circuit have a main resonance frequency (MRF). The transmitter is configured to operate at an operational frequency (OPF) from a range of OPFs. The range of OPFs is different than the MRF. The at least one relay comprises a second relay coil connected in series to the first relay coil. One side of the second relay coil faces the device and a second side of the second relay coil is covered by a relay ferrite layer. The second relay coil is smaller than the first relay coil.

Abstract: A magnet coil with reduced losses is stated. The coil has for this purpose a coil core and a winding, the turns of which are distributed over a plurality of portions which are mutually spaced.

Abstract: A wireless power feeding device includes an attachment member having a socket to be electrically connected to a power supply and a fastener to be electrically connected to a ground, and a band having a socket pin to be inserted to the socket and a locking tool to be locked to the fastener, the band being attached to the attachment member and fixing a power receiving device to which power is to be wirelessly fed to the attachment member, wherein the socket pin has a power feeding electrode to be electrically connected to the power supply within the socket, and a ground connection sensing electrode to be electrically connected to the ground via the locking tool and the fastener, and the attachment member has a switch circuit electrically connecting the power supply to the power feeding electrode only when the ground connection sensing electrode is electrically connected to the ground.

Abstract: The present disclosure relates to the field of power electronic technology, provides a magnetic unit, including: a magnetic core and a winding, the magnetic core includes Q magnetic legs arranged in a row, where Q is a natural number and Q?2, and the winding includes a first winding and a second winding, where the first winding is magnetically coupled with the second winding, and the first winding is wound around the Q magnetic legs while the second winding is wound around the Q magnetic legs. The first winding between any two adjacent magnetic legs is generally symmetrically disposed at both sides of the symmetric plane between the any two adjacent magnetic legs, thereby the magnetomotive force (MMF) distribution between any two adjacent magnetic legs is uniform.

Abstract: The present disclosure provides a DC power supply system and its control method. The system includes: a first power supply circuit and a second power supply circuit, at least one of the first power supply circuit and the second power supply circuit including a phase shifting transformer, wherein the first power supply circuit includes a number N of first AC/DC conversion circuits, and the second power supply circuit includes a number N of second AC/DC conversion circuits, where N is an integer greater than or equal to 2; an output side of each of the N first AC/DC conversion circuits is electrically connected in parallel with an output side of a corresponding second AC/DC conversion circuit of the N second AC/DC conversion circuits through a DC busbar to form N sets of redundant backup circuits.

Abstract: A flexible load management (FLM) system and technique adaptively monitors and manages power consumption of a premises. The FLM system includes a virtual critical load panel (vCLP) that utilizes circuit breakers in combination with companion modules (i.e., intelligent controllers) to vary a prioritization arrangement of loads in the premises by time of day, season or even dynamically. The vCLP is a prioritized enumeration (i.e., prioritization) of the loads within the premises, wherein the loads are considered sufficiently important such that they are protected by a local power source. The vCLP is dynamically configurable by a user in real time according to an instantaneous demand for the prioritized loads that is used to determine a number of branch circuits associated with the loads that is able to be powered-on at any time.

Abstract: A three-phase expandable AC system based on battery reconfiguration and a control method thereof are provided. The system includes a reconfigurable battery array capable of connecting to a load or being tied to a grid, and having a plurality of battery array modules. The reconfigurable battery array may perform charging or discharging with respect to the load or the grid, and may perform one of operations including: generating a single-phase AC voltage corresponding respectively to outputs of the battery array modules; generating a three-phase AC voltage corresponding to three battery array modules selected from the plurality of battery array modules; and generating a plurality of three-phase AC voltages in parallel from the plurality of battery array modules, and merging the three-phase AC voltages in parallel to scale power.

Abstract: A power supply system for a vehicle includes a high-voltage battery that supplies electric power to an on-vehicle motor, a low-voltage battery that supplies electric power to a plurality of on-vehicle auxiliary machines, a DC/DC converter that changes voltage of an output from the high-voltage battery and supplies the resulting output to the low-voltage battery, and a controller that detects a working state of at least one of the plurality of on-vehicle auxiliary machines and controls operation of the DC/DC converter in accordance with the detected working state.

Abstract: A computer-implemented method and system for transmitting power and data together in a rotorcraft using a slip ring assembly is disclosed. According to one example, a computer-implemented method includes providing a slip ring assembly comprising a stationary element coupled to an airframe of a rotorcraft and a rotatable element rotatable relative to the stationary element and coupled to a rotor assembly of the rotorcraft. Power is transmitted from a power source associated with the airframe to an electronic device associated with the rotor assembly, the slip ring assembly being configured to complete an electrical circuit between the power source and the electronic device to provide power from the power source to the electronic device. Data is transmitted from a first data transceiver associated with the airframe to a second data transceiver associated with the rotor assembly via the electrical circuit completed by the slip ring assembly.

Abstract: An electric power management device that manages electric power in a building configured to be electrically connectable to a vehicle including a battery, the device comprising a command issuing unit configured to issue a command to perform charging and discharging of the battery, a specifying unit configured to specify a target range for a charging rate of the battery in performing charging and discharging, and a storage unit configured to store the charging rate in performing charging and discharging, wherein the command issuing unit restrains an issuance of a command to start discharging when the stored charging rate is not more than a lower-limit value of the target range, and restrains an issuance of a command to start charging when the stored charging rate is not less than an upper-limit value of the target range.

Abstract: This matrix-like power/communications system is a decentralized array of scalable self-configuring modular electrical components that are easily physically and electrically replaceable and combinable into any series, parallel or bypassed state with any power supply and bi-directional data communications input; resulting in an autonomous system survivable in the harshest environments including physical shock, vibration, vacuum, radiation, thermal, and electromagnetic interference; and provides a communication interface for external control or monitoring, simultaneously being capable of reconfiguring itself if an internal battery cell failure occurs by switching in a spare cell(s) to replace a dead cell within the system for maintaining uninterrupted power and communications during the upset event, while being capable of reconfiguring itself autonomously into an arrangement of series/parallel states for charge/discharge while enabling cell balancing and continual monitoring of all individual cell parameters, an

Abstract: An inductor includes a pair of core portions having tapered legs and windings wound around the tapered legs. Each of the core portions are arranged adjacent to each other such that the tapered legs define a gap between the core portions that extends diagonally from one end of the inductor towards another end of the inductor relative to outer surfaces of the inductor.

Abstract: System, methods, and techniques for load management in a microgrid are disclosed. A system of load management includes one or more processors configured to receive a time threshold value defining a time period of power demand in a microgrid, determine a battery rating of the microgrid, and trigger load shedding or load restoration in the microgrid based on one or more of the time threshold value and the battery rating. The load shedding includes selecting and shedding a first load in the microgrid for load shedding, thereby removing a measured power consumption of the selected first load from an overall power consumption of the microgrid by the shedding. The load restoration includes selecting and restoring the first load in the microgrid, there by adding the measured power consumption of the selected first load to an overall power consumption of the microgrid by restoration.

Abstract: A method for controlling a DC/AC converter connected to an electrical network, the converter being controlled by a control law that is configured to require the converter to operate, by default, in a current source mode, and in case of disappearance of the electrical network, to control the switching of said converter from the current source mode to a virtual synchronous generator mode, the control law being also configured to, as long as the converter is running in the current source mode, monitor the electrical network frequency and phase allowing the initialization of the emulation of the virtual synchronous generator mode, by said control law, at the time of detection of the disappearance of the electrical network.

Abstract: One or more techniques and/or systems are provided for providing power to a plurality of dispensers. For example, a supply coupler, such as an alternating current to direct current power converter, is coupled to an energy storage component and/or a load coupler of a power distribution apparatus. The supply coupler provides power over the load coupler to one or more dispensers for operation. The supply coupler provides power to the energy storage component for energy storage. Responsive to a load on the power distribution apparatus exceeding a supply current of the power provided by the supply coupler (e.g., multiple dispensers may attempt to perform concurrent dispense events), the energy storage component may discharge energy to provide additional power to one or more dispensers to facilitate concurrent dispense events. Because the power distribution apparatus may connect to multiple dispensers, a cord management device may be used for power cord management.

Abstract: A control apparatus includes: an acquiring unit that acquires information indicating: power demand in a first power network that supplies power in a first region including a future movement destination of a first vehicle; and power demand in a second power network that supplies power in a second region including a future movement destination of a second vehicle; and a control unit that makes energy accumulated in or released from a driving power source provided to the first vehicle preferentially over a driving power source provided to the second vehicle, based on the power demand in the first power network, and the power demand in the second power network.

Abstract: An excavator comprising: an electric motor having a commercial power supply and a battery as the drive power sources therefor; and a hydraulic actuator having a hydraulic pump driven by the electric motor, as the hydraulic source therefor. The excavator has: a first power supply mode in which the electric motor is driven while the battery is being charged by the commercial power supply; and a second power supply mode in which the electric motor is driven only by the battery. A power supply cable for supplying power from the commercial power supply is connected to a power supply port and, if the electric motor has stopped operating, the excavator moves from the second power supply mode to the first power supply mode.