Abstract: Controlling a power converter circuit for a direct current (DC) power source is disclosed. The power converter may be operative to convert input power received from the DC power source to an output power and to perform maximum power point tracking of the power source. The power converter is adapted to provide the output power to a load that also performs maximum power point tracking.

Abstract: An electric power system is disclosed herein. The electric power system may manage and store electric power and provide uninterrupted electric power, derived from a plurality of electric power sources, to an electric load. The electric power system may contain an energy storage unit and generator assembly. The electric power system may connect to a power grid and renewable energy sources, and may charge the energy storage unit using the power grid, renewable energy sources, and/or generator assembly. The electric power system may be configured to determine load power usage and environmental factors to automatically and continuously modify a charging protocol to, for example, provide high efficiency and/or self-sufficiency from the power grid. The electric power system may operate entirely off-grid and may provide electricity to the load without interruption to power.

Abstract: The present invention discloses a converter with cold start-up and a cold start-up method for modular power converters that allows converter operation tests to be carried out without a connection to the AC grid. For that purpose, the control module powers the power converter modules, disconnects the power converter from the AC grid, selects a power converter module as the AC-source module and configures a voltage and a frequency for the AC-source module, selects the power for the other power converter modules and sets starting conditions. Previously, the control module is powered by an AC source that can be internal or external, such as an uninterruptible power supply (UPS) or a DC source (photovoltaic field), via a DC-AC transformer.

Abstract: Provided are an energy storage power supply, a parallel control device for energy storage power supplies and a parallel control method for energy storage power supplies. The energy storage power supply includes a battery module; an inverter module electrically connected to the battery module; an output module electrically connected to the inverter module; an detection module electrically connected to the output module; an communication module communicated with another energy storage power supply; an switching module electrically connected to the inverter module or the output module; and a processor module electrically connected to the detection module, the communication module and the switching module, and is configured to control, according to the power of a load detected by the detection module, the switching module to be electrically connected to the inverter module or the output module.

Abstract: A system for feeding electric power to a first consumer (1) comprises an input filter (6) with an input configured to be connected to a DC energy source and a DC intermediate link (3) connected to an output (14) of the input filter. A converter (12) is with an input connected to the DC intermediate link and has an output to be connected to said first consumer (1). The unit (16) controls the converter to obtain feeding of electric power requested by the first consumer independently of variations of the voltage on the DC link (3). An assembly is configured to act stabilizing on that voltage by controlling the converter to add a first power component to the power to be fed to the consumer. A second consumer (19) is controlled to consume a second power component to either assist the control of the converter to obtain the stabilization or alone take care thereof.

Abstract: A positive common line and a negative common line are connected to a power source connector connected to a battery pack. First filters are provided on these two common lines, respectively. The positive common line is branched into a positive front line and a positive rear line. The negative common line is branched into a negative front line and a negative rear line. These two front lines are connected to a front power connector that is connected to a front power control unit. These two rear lines are connected to a rear power connector that is connected to a rear power control unit. It is possible to suppress electromagnetic noise on common lines.

Abstract: A bus plug structured to electrically connect between a busway and a load includes a circuit breaker structured to electrically connect between connectors and the load and to output a first control signal, the circuit breaker including separable contacts structured to open to stop power from the flowing from the busway to the load, a motor operator structured to cause the separable contacts to open or close in response to the first control signal from the circuit breaker, and a wireless communication module structured to wirelessly communicate with an external device and to output a second control signal to the circuit breaker is response to wireless communication received from the external device. The circuit breaker is structured to output the first control signal to the motor operator to open or close the separable contacts in response to receiving the second control signal from the wireless communication module.

Abstract: A low power transmitter includes a low frequency feedback loop, a high frequency switching element embedded within the low frequency feedback loop, and a mixer electrically communicating with the low frequency feedback loop and the high frequency switching element. The low frequency feedback loop employs either a voltage mode interface or a current mode interface. The high frequency switching element includes a first transistor, a second transistor, and a pair of inductive elements. Alternatively, the high frequency switching element includes a single transistor and a single inductive element.

Abstract: A method and apparatus for estimating capacity of a system including an energy generation system, an energy storage system or both. The method and apparatus initially estimate the system capacity based on a facility location and size. The initial estimate may be adjusted through adjustment of at least one parameter. An updated capacity estimate is generated and displayed.

Abstract: In one aspect, an electromagnetic (EM) telemetry device is disclosed including an EM telemetry circuit capable of transmitting a pulsed high power EM telemetry signal, wherein the high power EM telemetry signal has a peak or average pulse power of about 20 W to about 2000 W.

Abstract: A power feeding apparatus is provided. The power feeding apparatus includes a power feeding unit configured to supply electric power to a power receiving apparatus through a magnetic field; a measuring unit configured to measure an electric characteristic value and to generate a measurement value; a power receiving unit configured to provide a set value; and a foreign substance detection unit configured to detect a foreign substance in the magnetic field based on the set value and the measurement value. A power receiving apparatus, a power feeding system, and a method of controlling power feeding are also provided.

Abstract: A DER (distributed energy resource) device includes a metrology module and a communications module. The metrology module monitors the output of the DER device and the communications module provides bidirectional communications across a communications network to control the DER device. The control of the DER devices may include commands to connect the DER device to the grid, to disconnect the DER device to the grid, to connect the DER device to the premises, or to adjust a power characteristic of the output of the DER device.

Abstract: A method and apparatus for estimating capacity of a system including an energy generation system, an energy storage system or both. The method and apparatus initially estimate the system capacity based on a facility location and size. The initial estimate may be adjusted through adjustment of at least one parameter. An updated capacity estimate is generated and displayed.

Abstract: A battery boosting device adapted to be affixed internally to a vehicle, the battery boosting device comprising two or more sets of cables adapted to jump start an internal batter and/or an external battery.

Abstract: Apparatus comprising a first layer of electrically conductive material and a second layer of electrically conductive material, and a plurality of impedance elements connecting said first layer with said second layer, wherein an impedance value of at least some of said plurality of impedance elements is controllable.

Abstract: The system includes one or more busbars couple to an AC line, branch relays each coupled to a busbar and to a respective circuit breaker, and current sensors each corresponding to at least one respective branch relay of the plurality of branch relays. The system also includes a deadfront arranged in front of the plurality of branch relays, and including openings corresponding to the branch relays allowing an electrical terminal of each branch relay to protrude forward through a respective opening. A circuit breaker is engaged with each respective branch relay, on the deadfront to create an array of branch circuit breakers. The combination of relay and circuit breaker allows each branch circuit to be controllable. The relays may include current sensors, such as a shunt, used to determine a branch circuit current and control the relay. Control circuitry manages the relay on-off operation and monitors branch circuit operation.

Abstract: A photovoltaic panel with multiple photovoltaic sub-strings including serially-connected photovoltaic cells and having direct current (DC) outputs adapted for interconnection in parallel into a parallel-connected DC power source. A direct current (DC) power converter including input terminals and output terminals is adapted for coupling to the parallel-connected DC power source and for converting an input power received at the input terminals to an output power at the output terminals. The direct current (DC) power converter optionally has a control loop configured to set the input power received at the input terminals according to a previously determined criterion. The control loop may be adapted to receive a feedback signal from the input terminals for maximizing the input power. A bypass diode is typically connected in shunt across the input terminals of the converter. The bypass diode functions by passing current during a failure of any of the sub-strings and/or a partial shading of the sub-strings.

Abstract: A non-contact power supply system is provided employing an electric power transmitting device which can improve the transmission efficiency of electric power, suppressing the circuit scale. The electric power transmitting device is configured with a resonance circuit including a resonance capacity and a resonance coil acting as a transmitting antenna, and a first coil arranged magnetically coupled with the resonance coil. The electric power transmitting device transmits electric power in a non-contact manner using resonant coupling of the resonance circuit. When transmitting the electric power, the electric power transmitting device controls the first coil to connect or disconnect both ends thereof so as to bring a resonance frequency of the resonance circuit close to a frequency of an electric power transmission signal outputted as the electric power to be transmitted.

Abstract: A jumper cable device, comprising an input port, two clamps, a main controller, a clamp polarity detection module and a clamp connection module. The input port is configured to be connected to a startup power source. The clamps are configured to be connected to a battery of a load. The clamp polarity detection module and the clamp connection module are connected to the main controller and the clamps. When the clamps are connected to the battery, the clamp polarity detection module detects polarities of electrodes of the battery to which the two clamps are connected, and the main controller acquires a detection result signal therefrom, control the clamp connection module according to the detection result signal to determine polarities of the two clamps according to the polarities of the electrodes of the battery and connect circuits between the input port and the two clamps to boost the battery.

Abstract: The invention relates to a grid synchroniser for connecting an AC output of a power converter to the AC grid mains. In one aspect the invention provides a grid synchroniser comprising an inverter controller to control an AC output of the inverter, the controller including a receiver to receive grid data from a grid sensor location remote from said inverter. In another aspect we describe techniques for rapid removal of charge from a control terminal of a power switching device such as a MOSFET, IGBT or Thyristor using a particular driver circuit.