Abstract: A contactless inductive energy transmission device includes a primary and a secondary each having at least one coil. The coils are inductively coupled via an air gap. The primary and the secondary each also have a data transmission unit for the transmission of data via the air gap.

Abstract: A mobile solar collecting device, system and method is disclosed. The system includes an angle adjustable solar collecting device, an electronic storage unit to store electric energy collected by the mobile solar collecting device, a first power connecter to electrically engage with a second power connector affixed to a structure to feed electricity to an electric power grid, a transport unit to move the mobile solar collecting device, a controller. The controller directs the transport unit to periodically move the adjustable solar collecting device to optimum solar collecting locations, provides an indication to adjust an orientation of the adjustable solar collecting device to obtain maximum energy from a sun, and directs the transport unit to move the mobile solar collecting device to a location where the first power connector electrically engages with the second power connector to discharge energy in the electronic storage unit to the power grid.

Abstract: A circuit for a smart photovoltaic (PV) inverter system and the smart PV inverter system are described. The circuit includes one or more strings coupled to an electrical load. Each of the one or more strings further includes one or more string members coupled in series, where each of the one or more string members comprises a voltage source and an inverter. The circuit also includes a controller to receive an output from an operator controller and control the strings, where the controller is configured to control the strings by providing a function command to a first string member of each of the one or more strings based on the output from the operator controller. The voltage source may also receive an output from an energy output device. Further, the inverter may be configured to convert the output of energy output device into an energy source of electrical load.

Abstract: An electronic circuit includes a switched-mode power supply and a linear voltage regulation circuit having an input stage, a first output stage, and a second output stage. A first load is capable of being powered either by the switched-mode power supply in series with the regulation circuit or by the regulation circuit without the switched-mode power supply.

Abstract: In accordance with aspects of the present invention, a wireless power circuit is presented. In some embodiments, the wireless power circuit includes one or more high-side transistors; one or more low-side transistors coupled in series with the one or more high-side transistors, wherein the one or more low-side transistors can be controlled as current sources.

Abstract: An inductive power transmitter comprising a plurality of autonomous resonant inverters, wherein each inverter outputs a voltage to a respective transmitter coil/coils for inductive power transfer; and a magnetic coupling structure between the respective transmitter coils, wherein the magnetic coupling structure is configured to determine a phase shift between the output voltage of each inverter.

Abstract: Systems and methods for supplying power (both active and reactive) at a medium voltage from a DCSTATCOM to an IT load without using a transformer are disclosed. The DCSTATCOM includes an energy storage device, a two-stage DC-DC converter, and a multi-level inverter, each of which are electrically coupled to a common negative bus. The DC-DC converter may include two stages in a bidirectional configuration. One stage of the DC-DC converter uses a flying capacitor topology. The voltages across the capacitors of the flying capacitor topology are balanced and switching losses are minimized by fixed duty cycle operation. The DC-DC converter generates a high DC voltage from a low or high voltage energy storage device such as batteries and/or ultra-capacitors. The multi-level, neutral point, diode-clamped inverter converts the high DC voltage into a medium AC voltage using a space vector pulse width modulation (SVPWM) technique.

Abstract: Methods and systems for providing intelligent power distribution. A distribution point unit is connected to a plurality of user units in a telecommunications system. A loss of power to the distribution point unit is detected. It is determined that at least one user unit has backup power. Based on a determination that at least one user unit has backup power, a power mode for the distribution point unit is selected. The power mode is implemented on the distribution point unit.

Abstract: In an electrical distribution system for a facility served by two power sources, ground currents on neutral conductors are avoided by utilizing a common neutral conductor in distributing power from both power sources to one or more transfer switches. In at least one single cable or conduit run, either between transfer switches or between both power sources and a transfer switch, line conductors carry power from each power source to the transfer switch(es), and a common neutral conductor carries return current for both power sources. The neutral terminals of both power sources are connected together (in part via the common neutral conductor in the single cable or conduit run), and the common neutral is grounded at only one place.

Abstract: A vehicle includes a power system that is couplable to a power network. A controller is configured to communicate with appliances coupled to the power system and programmed to operate the appliances to prevent current demand of the appliances from exceeding a peak operating current of the power system and to balance current demand to prevent exceeding a nominal current rating of the power system for more than a predetermined time.

Abstract: A system for performing computing operations in a data center includes one or more sets of computer systems, one or more primary power systems, and a reserve power system. The primary power systems include at least one power distribution unit that supplies power to at least one of the sets of computer systems. The reserve power system automatically supplies power to at least one of the sets of computer systems if a condition is met (such as a failure of the primary power system).

Abstract: A method for signaling the position of a safety device with respect to a safety zone to be monitored with regard to the safety device, as well as a safety switch system suitable for carrying out the method. For monitoring the safety zone, the position of the safety device with respect to the safety zone is detected with a detection device, and the safety zone is divided into a first subzone and at least a second subzone. If the position of the safety device is detected within the first subzone, this is recognized as the first condition; if the position of the safety device is detected in the area of the second subzone, this is recognized as a second condition; and if the position of the safety device is not detected within the first subzone or in the area of the second subzone, this is recognized as a third condition.

Abstract: Wireless power receiver circuits and methods for use in wireless power transfer systems are provided for providing a constant current or voltage, depending on which is needed, to an electrical load. The wireless power receiver circuits are configured to shut down the resonant responses of the receiver circuits when electrical power is not needed by the load to reduce power consumption and avoid unnecessary heat dissipation. Additionally, a switching device of the wireless power receiver circuit that is used for shutting down the resonant response can operate at relatively low frequencies, and consequently, can be implemented using relatively low-speed, relatively inexpensive components.

Abstract: A vehicular electric power supply system that is mounted in a vehicle includes: a load is configured to be supplied with electric power from one or both of a first-series electric power supply line and a second-series electric power supply line that are provided independently of each other; a first battery; a second battery; and a connection control device is configured to control connection of the first battery and the second battery to the first-series electric power supply line and the second-series electric power supply line, based on a state of the vehicle.

Abstract: Disclosed is a rechargeable battery interconnected smoke detector system of one or more smoke detector(s) wired into a dedicated circuit with a single location housing a DC power backup source, such as a rechargeable DC battery. The DC power backup source may be replaceable or rechargeable with DC current from and AC-DC transformer, a photovoltaic cell, or other means. Electronic relays within the system provide a current to the dedicated circuit by selecting between the line-voltage alternating current source and the DC power backup.

Abstract: A solid state power controller configured to supply electric power from a power supply to at least one load, comprises: a solid state switching device having a first terminal (D) connected to the power supply, and a second terminal (S) connected to the load, the solid state switching device configured to switch between an OFF operation mode in which the second terminal (S) is electrically disconnected from the power supply, and an ON operation mode in which the second terminal (S) is electrically connected to the power supply, and a load current detection unit configured to detect a load current through the solid state switching device; wherein the load current detection unit comprises a first load current amplifier and a second load current amplifier.

Abstract: Disclosed is a wearable charging device for a smartwatch, including: a cradle including an accommodation groove in which a main body of a smartwatch is accommodated; and a wireless charging module mounted in the cradle to be attached to or detached from the cradle by an attachment-detachment unit and configured to generate an electromagnetic field to charge a battery embedded in the main body of the smartwatch.

Abstract: A power transmission communication unit includes a first unit including a first power transmission coil, a first signal transmission coil, and a first case, and a second unit including a second power transmission coil, a second signal transmission coil, and a second case. The first unit and the second unit have a positional relation such that the first power transmission coil and the second power transmission coil face each other along a first coupling axis direction, and the first signal transmission coil and the second signal transmission coil face each other along a second coupling axis direction different from the first coupling axis direction, in a state in which the first case and the second case are fitted to each other.

Abstract: System for converting transmitted energy to vehicle movement and power conversion system movable within a waveguide. System for converting transmitted energy to vehicle movement includes a structure having an elongated tubular interior; a movable vehicle structured and arranged to move through the elongated tubular interior; at least one energy source arranged at a fixed location within the elongated tubular interior to transmit energy; and a receiver, carried by the movable vehicle, configured to receive the transmitted energy from the at least one energy source and to convert the received energy into at least one of electrical power and thrust for moving the vehicle.

Abstract: Provided is a collected current monitoring device enabling an analysis of collected current in each current collector while allowing a reduced equipment cost. The collected current monitoring device of the present disclosure is installed in a railroad vehicle including current collectors, main transformers, and main converters.