Abstract: A charging power supplying system using a motor driving system includes an inverter that is connected to a battery, includes at least one switching device, and is configured to change an on/off state of the switching device and to convert power stored in the battery to output the converted power to an output terminal of the inverter, a motor including a plurality of coils that each receive power provided from the output terminal of the inverter, a charging power output terminal that is connected to a neutral point to which the plurality of coils of the motor is commonly connected and outputs current output from the neutral point to an external charging target, and a controller configured to control the switching device in the inverter based on current of the output terminal of the inverter.

Abstract: A power transmission system including a light output apparatus and a light receiving apparatus is provided. The light output apparatus includes a plurality of light sources having different wavelengths, and a light output control unit configured to control light outputs of the plurality of light sources, and the light receiving apparatus includes a photoelectric conversion element configured to absorb light beams emitted from the plurality of light sources, and convert the absorbed light beams into electrical power. The light output control unit individually sets each of the light outputs of the plurality of light sources.

Abstract: Systems and method are described herein for determining scheduling of electrical power system loads and generation resources. A load scheduling module determines load scheduling characteristics of the electrical power system loads and the generation resources based on power system constraints including power system flow, voltage constraints associated with each electrical system loads or each generation resource, or energy storage capacity of an energy storage device coupled to at least one of the electrical power system loads or the generation resources. The load scheduling module initiates a first signal that curtails power of a subset of the electrical power system loads based on the load scheduling characteristics. The load scheduling module initiates a second signal that adjusts power of at least a portion of remaining loads of the electrical power system loads to accommodate for the subset of the plurality of the electrical power system loads having curtailed power.

Abstract: A method for detecting the presence of a receiver in an inductively coupled power transfer system having a transmitter and receiver. The method includes switching on a transmitter converter at a first frequency, measuring the inrush current and determining whether there is a receiver present. In another method, the inrush current is measured for a range of transmitter frequencies, and the variation in current is used to determine where there is a receiver present. In another method, the inrush current is measured when there is a change in voltage in the transmitter, and the variation in current is used to determine where there is a receiver present. In another method, the current supplied to the transmitter converter is measured over two transmitter frequencies, and the variation in current is used to determine where there is a receiver present.

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: An automatic transfer switch includes a first phase switch component having a first plurality of cassettes, and at least one outer bus component disposed at an outer side of the first phase switch component. The automatic transfer switch additionally includes a first plate which is disposed on the outer side of the first phase switch component at a terminal end of the first phase switch component. The first plate is structured to increase impedance on an outer bus component of the first phase switch component to rebalance current along the first phase switch component.

Abstract: A method is provided for obtaining information for operating an accumulator, and for obtaining periods of time for charging different accumulators using the method. An electrical gardening and/or forestry apparatus system with at least one accumulator for carrying out such a method is provided.

Abstract: A circuit includes an emergency lighting system and an AC/DC converter. An output terminal of the emergency lighting system is electrically connected to a LED load, and the other output terminal DIM of the emergency lighting system is electrically connected to a switch S2. The switch S2 is controlled by the emergency lighting system. The emergency lighting system includes an AC input detection module, a switching time detection module and a lithium battery. The AC input detection module is electrically connected to a neutral wire VN and a live wire VL. The switching time detection module is electrically connected between an output terminal of the AC input detection module and the terminal DIM. An output terminal of the AC/DC converter is electrically connected to a positive electrode of the lithium battery, and the other output terminal of the AC/DC converter is electrically connected to the LED load.

Abstract: A wireless power transfer system comprising a transmitter and a receiver. The transmitter arranged to generate a varying electric field, and the receiver located in the varying electric field. The receiver comprising a first element and a second element. The first element and the second element having different geometries so different charge densities are induced on the first element and the second element by the varying electric field such that, in use, a current flows between the first element and second element, through a load connected between the first element and second element.

Abstract: A vehicle electric power supply apparatus includes a first electric power supply system, a second electric power supply system, an electric power fuse, a switch, a starter relay, an occupant operated unit, a starter control unit, and a switch control unit. The switch is controlled to be in one of an electrically-conductive state and a cutoff state. The starter relay is controlled to be in one of an electrically-conductive state or a cutoff state. The occupant operated unit is operated by an occupant. The starter control unit outputs an ON signal and the switch control unit outputs an OFF signal when the occupant operated unit is operated. The ON signal allows the starter relay to be controlled in the electrically-conductive state. The OFF signal allows the switch to be controlled in the cutoff state.

Abstract: The present disclosure relates to communicating fault event information between power supply devices. In an example, a fault event communication system can include a comparator that can be coupled to a node that can have a shared bus voltage established by current sharing circuitry. The comparator can compare the shared bus voltage to a reference voltage and output a fault alert signal based on the comparison to alert a respective power supply device that another power supply device is experiencing a fault event. The system can include logic circuitry that can initiate a timer for a time interval in response to receiving the fault alert signal. The logic circuitry can determine a type of fault event at the respective power supply device based on the fault alert signal and duration of time that has elapsed since initiating the timer.

Abstract: An electric utility distribution system in which power is supplied by a distribution transformer through an electric utility meter including an apparatus for detecting the presence of a back-feed voltage source connected to the load. The apparatus includes a virtual neutral established in the electric utility meter at ground potential and a remote switch that is opened to interrupt electric power flow from the distribution transformer to the load. The apparatus further includes a balanced voltage divider circuit including a connection point established between a pair of series connected resistive elements. In addition, the apparatus includes a detection circuit configured to monitor a voltage signal at the connection point to detect a back-feed voltage source connected between a neutral conductor of the electric utility distribution system and one of a first or second power line at the load.

Abstract: Disclosed examples relate to a power conversion system configured to provide a power output from an arrangement of direct current (DC) power sources. One example power conversion system includes multiple power sources PV(n), n=1 to x, connected in a series. For each power source PV(n) for n=1 to x?1, the power conversion system includes an intermediate bidirectional voltage converter VC(n) connected to a first terminal of the power source PV(n), a first terminal of power source PV(x), and a second terminal of power source PV(1). Each intermediate bidirectional voltage converter VC(n) includes a first switch operable in a pulsed mode to boost a power output by power source PV(n) and a second switch operable in a pulsed mode to reduce a power output by power source PV(n). The power conversion system also includes a balancer VC(x) connected to the first terminal of PV(x) and to a load.

Abstract: The present invention relates to a circulation charging system for an electric vehicle, including: a first motor configured to be rotated by a predetermined driving current and provide driving force to an engine; a second motor having a generator; a main battery and a spare battery configured to be charged based on a voltage output from the generator and alternately supply driving power required for driving the first motor; a central storage unit configured to be charged based on the voltage output from the generator and provide a driving force for driving the second motor; a second auxiliary storage unit configured to be charged based on the voltage output from the generator; and a switching controller configured to perform control so that the battery power of the main battery and the battery power of the spare battery are alternately supplied as the driving power of the first motor.

Abstract: A vehicle power supply system configured to be installed in a vehicle. The vehicle power supply system includes a battery having a rated voltage lower than a first voltage; a capacitor having a rated voltage higher than the first voltage; circuitry configured to discharge electric charge stored in the capacitor; and a controller configured to control the circuitry to charge the battery by discharging the electric charge stored in the capacitor in response to detection of a collision of the vehicle or detection of a process to replace the capacitor.

Abstract: A symmetric method for obtaining network-power-loss components induced by sources and loads at individual buses in AC power networks is invented. Two linear expressions of bus injection active and reactive powers in terms of translation voltages and voltage angles of all buses are established at first. Then a linear symmetric matrix-equation model for the steady state of the network is built. Manipulating this model by Moore-Penrose pseudoinverse produces a linear symmetric matrix expression of translation voltages and voltage angles of all buses in terms of bus injection powers. Expressing the network power loss in terms of source's and load's powers by this matrix expression, a symmetric algebraic calculation formula for obtaining the network-power-loss components is produced after manipulating by Shapley value theorem, by which the obtaining of network-power-loss components are achieved. The set of network-power-loss components provides a new efficient tool for economic operation of AC power networks.

Abstract: An electrical power supplying system including: a module docking station with a module docking receptacle and base station portion having integrated external power cord storage compartments; and a multi-function dockable module is docked in the module docking receptacle and can be manually removed and used locally as well as at remote locations.

Abstract: Embodiments of a conformal wave selector and methods of application thereof are disclosed. A conformal wave selector comprises a first plurality of conductors arranged substantially in parallel in a first direction and in a first region and a second plurality of conductors arranged substantially in parallel in second direction that is normal to the first direction and in a second region that is different than the first region. The conductors are sized, spaced, and directionally arranged such that signals of particular wavelengths and unknown polarization are reflected and other signals are allowed to penetrate the conformal wave selector.

Abstract: A switch control apparatus capable of effectively controlling a switch during a process of controlling the switch provided in a battery pack. When the switch is shifted from a closed state to an open state, the current caused by the generated counter electromotive force is quickly released, thereby quickly shifting the switch to turn on or off. In addition, since the voltage applied to the control unit falls within the rated voltage range, the stability of the switch control circuit may be enhanced.

Abstract: In the present legacy electrical power generation and distribution system, the power quality delivered to end consumers is being degraded by a number of disruptive technologies and legislative impacts; especially with the rapidly increasing myriad of privately owned and operated domestic and commercial distributed energy generation (DEG) devices connected at any point across a low voltage (LV) distribution network. The present invention bypasses this increasing critical DEG problem by offering a solution comprising an energy processing unit (EPU) that is installed at the edge of the high voltage (HV) transmission grid.