Abstract: An apparatus for wirelessly transferring charging power is provided. The apparatus comprises a ferrite structure. The apparatus comprises a first coil comprising a first conductor wound in a first layer at an outer side of the first coil and wound in a first plurality of stacked layers on an inner side of the first coil. At least one layer of the first plurality of stacked layers on the inner side of the first coil is recessed into the ferrite structure. The apparatus comprises a second coil comprising a second conductor wound in a second layer at an outer side of the second coil and wound in a second plurality of stacked layers on an inner side of the second coil. At least one layer of the second plurality of stacked layers on the inner side of the second coil recessed into the ferrite structure.

Abstract: Power systems include a housing and an automatic transfer switch (ATS switch) held in the housing, a Bypass switch held in the housing and a control circuit in communication with the ATS switch and the Bypass switch to automatically direct the Bypass switch and the ATS switch to carry out the selective connections to thereby allow automated, redundant power transitions to the system load from three different power sources.

Abstract: A photovoltaic energy system includes a photovoltaic field configured to convert solar energy into electrical energy, a power inverter configured to control an electric power output of the photovoltaic field, and a controller. The controller can determine optimal power setpoints for the power inverter by optimizing a value function that includes a penalty cost for failing to comply with a ramp rate limit and photovoltaic revenue.

Abstract: A motor vehicle having a vehicle body, which is formed at least in part from an electrically conductive material. An electrical system is arranged electrically insulated from the vehicle body and has a rectifier unit. An energy coupling device is arranged electrically insulated at the vehicle body for supplying electric energy for the electrical system. The energy coupling device has a coil for wireless magnetic coupling of an energy source that is external to the motor vehicle and provides an alternating magnetic field, wherein the coil is connected to the rectifier unit of the electrical system. An antenna unit is arranged at the vehicle body and is electrically insulated with respect to the electrical system. A decoupling device electromagnetically decouples the coil from the antenna unit.

Abstract: Systems and methods of measuring dynamic signals for power distribution units. In one embodiment, a power distribution unit (PDU) includes an analog to digital converter (ADC) including a plurality of channels, each channel corresponding to a respective outlet of a plurality of outlets of the PDU. The PDU further includes a microprocessor coupled to the ADC and configured to measure a scale of a signal output from a first channel of the ADC, compare the scale of the signal to a sensitivity threshold, and select, for a first outlet corresponding to the first channel, a reference voltage of a plurality of reference voltages for input to the ADC based on a result of comparing. Various embodiments allow using an ADC to measure low level outlet currents of less than around 300 mA in addition to high level currents such as around 20 A.

Abstract: A power supply apparatus includes a power supply unit that supplies power from a power source to a power receiving apparatus, a power acquisition unit that acquires a power value of power from the power source upon detecting another power receiving apparatus, and a controller that determines whether to supply the power from the power source to the another power receiving apparatus based on the power value.

Abstract: An uninterruptible power supply for providing an output power signal to a load comprises a ferroresonant transformer, a resonant capacitor, and an inverter. The resonant capacitor is operatively connected to the ferroresonant transformer. The inverter is operatively connected to the ferroresonant transformer. The inverter is configured to generate the output power signal based on at least one inverter control signal such that the output power signal is a quasi square wave having at least one change of phase and an upper limit. The at least one inverter control signal is held in an OFF state during at least a portion of the at least one change of phase, pulse-width modulated during at least a portion of the at least one change of phase, and held in an ON state when the output power signal is at the upper limit.

Abstract: A rack-based information handling system (IHS) includes a rack having a modular structure that supports insertion from a front of the rack of different numbers and sizes of information technology (IT) gear to create one or more IT nodes. Power bay chassis is received in the rack with a power distribution unit directed towards a rear of the rack. A modular busbar assembly is attached to the rear of the rack. A first vertical busbar segment is in direct electrical connection with the power distribution unit and spans one or more nodes to provide hot pluggable electrical power to an aft-directed connection of an IT node inserted into the rack. A second busbar segment can be attached to the first vertical busbar to electrically communicate with the power distribution unit and span an additional node adjacent to the one or more nodes to provide electrical power to the adjacent node.

Abstract: Coupled inductor signal transfer systems are disclosed in which transmitter and receiver coils are inductively coupled in a configuration for wirelessly transferring power and/or data signals. In preferred implementations, the systems may be used for transmitting both power and data. Preferred embodiments of the invention have at least one multi-tap coil on the primary side and/or secondary side of the system. The selection of taps enables the effective size and/or number of coils to be dynamically changed according to operational needs.

Abstract: An assembly for providing one or two disconnection switches in any of different electrical supply systems includes a printed circuit board having an internally configurable dual switch arrangement. The dual switch arrangement includes first and second switch areas for first and second groups of solid-state devices, first and second driver areas for first and second switch drivers, and busbars and power terminals. The first switch area includes the first group of solid-state devices and the first driver area includes the first switch driver which drives these solid-state devices as either a normally closed (NC) or a normally opened (NO) disconnection switch. First and second ones of the busbars respectively connect ends of the disconnection switch to first and second ones of the power terminals whereby the disconnection switch is provided in the electrical supply system when the electrical supply system is connected to the first and second power terminals.

Abstract: Systems and methods for identifying an island condition in a power distribution system and disconnecting distributed generators in the case of islanding. The systems and methods are used to enable reliable detection of island formation with high false-trip immunity, for any combination of distributed energy resources, and for distributed energy resources using grid support functions.

Abstract: In an embodiment, a system includes controller circuitry to initiate a plurality of energy transfer cycles. Each energy transfer cycle includes an input time period during which corresponding input energy is received by a power train, and an output time period during which corresponding output energy is output from the power train. The system also includes energy detection logic to provide, upon completion of each energy transfer cycle, a corresponding indication of corresponding residual energy retained by the power train. Other embodiments are described and claimed.

Abstract: In a control method for a fuel cell system, a fuel cell side converter that is provided between a fuel cell and an inverter is controlled to step up a fuel cell voltage to an inverter terminal voltage supplied to the inverter. A margin voltage is set to guarantee step-up operation or interruption of operation of the fuel cell side converter. A directly connected state or a voltage transforming state regarding an operation state of an energy storage device side converter is selected such that the inverter terminal voltage is higher than a sum of the margin voltage and the fuel cell voltage. The energy storage device side converter does not transform the energy storage device voltage in the directly connected state. The energy storage device side converter transforms the energy storage device voltage to the inverter terminal voltage in the voltage transforming state.

Abstract: Methods and apparatuses, including computer program code are disclosed herein that provide adaptive battery protection. A method includes disabling a timer, when a current drawn by a battery-powered device from a battery is less than or equal to a lower current threshold. When the timer is disabled, the battery may remain connected to the battery-powered device. The method further includes enabling the timer when the current drawn from the battery is greater than the lower current threshold and less than an extended current threshold. When the timer is enabled, the timer may allow the battery to remain connected to the battery-powered device until the timer expires. The method further includes disconnecting the battery when the timer expires or when the current drawn from the battery exceeds the extended current threshold.

Abstract: An inverter system includes an input inverter including a positive and a negative DC input terminals and first and second AC output terminals; and a bidirectional inverter device, including a first bidirectional subinverter and a second bidirectional subinverter. The first and second bidirectional subinverters have DC terminals that are interconnected in parallel with a DC power storage device. The first bidirectional subinverter have first and second AC terminals. The first AC terminal is connected to the first AC output terminal of the input inverter. The second bidirectional subinverter have first and second AC terminals. The first AC terminal is connected to the second AC output terminal of the input inverter. The second AC terminal of the first bidirectional subinverter and the second AC terminal of the second bidirectional subinverter are interconnected.

Abstract: An uninterruptible power supply (UPS) system is provided. The UPS system includes a plurality of UPSs, a ring bus that electrically couples the UPSs together, a static switch coupled between an associated UPS of the UPSs and the ring bus, and a controller. The controller receives current data representative of an inverter current and a load current associated with the associated UPS. An output capacitor of the associated UPS is coupled to a node that conducts the inverter current and the load current. The controller further calculates a measured current based on the received current data, determines a voltage of said output capacitor, generates a derived current based on the determined voltage and a predetermined capacitance of said output capacitor, compares the measured current and the derived current to identify a fault location, and controls said static switch based on the identified fault location.

Abstract: Power transmitting unit (PTU) usable with a wireless power transfer system to supply power and maintain a control signaling link to a local power receiving unit (PRU). A cross-connection circumstance between the PTU and a remote PRU is determined, where a control signaling link between the PTU and the remote PRU is established in an absence of power transmission to the remote PRU from the PTU. In response to the cross-connection circumstance, the control signaling link with the remote PRU is terminated while the supply of power and the control signaling link with the local PRU is maintained. In a related embodiment, a wrong-placement characteristic where power is transferred to a rogue local PRU in an absence of a control signaling link with that PRU, is detected. In response, the supply of power is maintained for at least a waiting period.

Abstract: A passive beamforming rectenna includes a plurality of antennas, a plurality of terminal port rectifying circuits, and a beamforming network. The beamforming network includes (a) a plurality of antenna ports connecting to the plurality of antennas, and (b) a plurality of terminal ports connecting to the plurality of terminal port rectifying circuits. The beamforming network further includes a microwave lens or any of a variety of other structures. The beamforming rectenna is characterized by a plurality of radiation distribution patterns. Electromagnetic power is received through the plurality of antennas.

Abstract: A system and method are provided for wirelessly transmitting energy from a transmitter platform to a receiver platform. The system reduces the number of coils on the receiver platform to one, while the remaining coils are located on the transmitter platform. The spacing of the coils on the transmitting platform can be adjusted to optimize the magnetic flux transfer to the single coil on the receiving platform based on the unique distance between the transmitter and receiver platforms.

Abstract: A method of configuring windings in an inductive charging pad array by using capacitors for impedance control and configuring windings to reduce the stray magnetic fields produced.