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.

Abstract: A device for contactless transmission of data and energy and for angle measurement, including a first disk-shaped unit and a second disk-shaped unit, which move in relation to one another around a shared rotational axis and are opposite to one another axially spaced apart with respect to the rotational axis. The first disk-shaped unit including a first annular disk-shaped recess, and the second disk-shaped unit including a first annular disk-shaped recess, which is opposite to the first annular disk-shaped recess of the first disk-shaped unit radially spaced apart with respect to the rotational axis. The first disk-shaped unit includes at least one second annular disk-shaped unit situated concentrically to the first annular disk-shaped recess of the first disk-shaped unit, and the second disk-shaped unit includes at least one second annular disk-shaped recess situated concentrically to the first annular disk-shaped recess of the second disk-shaped unit.

Abstract: The invention relates to an on-board network device for supplying at least two electrical loads with an on-board network voltage in a motor vehicle, wherein the on-board network device has a connection device for receiving the on-board network voltage from a voltage source and a first on-board network branch for connecting one or some of the loads and for forwarding the on-board network voltage to each connected load. A second on-board network branch is provided for connecting each remaining load and for forwarding the on-board network voltage to each remaining load and that the connecting device is connected to both the first on-board network branch and the second on-board network branch via at least one switching element and that a control device is configured to electrically connect the connection device in an alternating manner to the first and second on-board network branches by switching the at least one switching element.

Abstract: An energy storage system and a multi-stage short circuit protection system thereof are provided. The multi-stage short circuit protection system includes N stages of fuse units. Each battery pack is connected to a corresponding first-stage fuse unit, a direct-current side of a power conversion device is arranged with a third-stage fuse unit, and at least one second-stage fuse unit is arranged between multiple battery packs and the power conversion device. In a case that a short circuit fault occurs at a position on the direct-current side of the power conversion device, only a fuse unit at a stage preceding the position and a fuse unit at a stage following the position are broken, thereby avoiding a problem of a high maintenance cost in the conventional technology due to that all fuses are broken.

Abstract: Systems and methods for improved anomaly detection for rotating machines. An example method may include determining that power generation is to be performed based on a voltage instead of a power factor; receiving a command voltage; receiving a measured voltage value from a first location in a power generation network; determining that the measured voltage value from the first location is less than the command voltage value; determining that a current value associated with a transmission line at the third location is less than a threshold current value; determining that a reactive power of a power generation component at a third location is less than a maximum reactive power of the component; and increasing, based on the determination that the reactive power of the component at the third location is less than a maximum reactive power of the component, the reactive power of the component.

Abstract: The invention relates to an inductive charging device for a vehicle and to a method for monitoring an inductive charging device for a vehicle, wherein a metal object is detected in each case. The method has the steps of: carrying out a passive metal object detection, MOD, while a battery of a vehicle (1) is inductively charged by generating an electromagnetic field in order to induce a charge current (I2) in a receiving coil structure (2) of the vehicle (1); and carrying out an active MOD at points in time at which no inductive charging process is being carried out.

Abstract: A long-term predictor predicts long-term predicted power indicating temporal changes in consumed power of a customer using a long-term prediction model. A short-term predictor predicts short-term predicted power indicating temporal changes in the consumed power of the customer immediately after a current time, using a short-term prediction model, based on temporal changes in the consumed power of the customer immediately before the current time. A controller controls charging and discharging of a power storage apparatus at intervals based on the long-term predicted power and the short-term predicted power. The controller predicts temporal changes in charging power, discharging power, and charged electric energy of the power storage apparatus, and when the charged electric energy is predicted to reaches a lower limit due to discharging of the power storage apparatus, the controller charges power from the power network to the power storage apparatus in advance.

Abstract: A first disclosure is a coil member wherein a lead wire is wound in oval shape, with an oval-shaped cross section being curved along a major-axis direction of the oval-shaped cross section and having a curvature axis in a direction parallel to a minor-axis direction of the oval-shaped cross section. A second disclosure is a contactless-type power transmission device provided with: a coil member as a first coil; a second coil; and a tilting shaft that makes variable, using the curvature axis as a rotating axis, an inclination between a central axis of the first coil, which is a rotational symmetry axis of the first coil, and a central axis of the second coil.

Abstract: An electric power conversion apparatus includes a main DC-to-DC converter and an electric power conversion unit. The main DC-to-DC converter is configured to perform voltage conversion between a first-voltage section that operates at a first voltage and a second-voltage section that operates at a second voltage. The electric power conversion unit is connected with the first-voltage section and includes an electric power conversion section and an auxiliary DC-to-DC converter. The electric power conversion section is configured to perform electric power conversion between the first-voltage section and a third-voltage section that operates at a third voltage. The auxiliary DC-to-DC converter is connected in parallel with the main DC-to-DC converter. The auxiliary DC-to-DC converter shares a common configuration section with the electric power conversion section. The common configuration section is constituted of at least part of the electric power conversion section.

Abstract: The present disclosure provides a configuration that can determine whether to suppress the power consumption of a load based on the state of a battery, and reduce the duty ratio to be supplied to a switch unit that is provided on a power supply path to the load, when the power consumption is to be suppressed. In an on-board power control apparatus, when a determination unit determines that a prediction value of an output voltage of a battery is less than a threshold voltage value, a duty ratio setting unit selects at least one of the plurality of loads as a target load for which power supply is to be stopped or suppressed, and the duty ratio setting unit resets duty ratios to reduce a duty ratio of a control signal to be output to a switch unit provided on a power supply path to the selected target load.