Abstract: A protection device for connection to a power bus of an electrical power system includes a bidirectional clamping apparatus configured to conduct current when a voltage across the bidirectional clamping apparatus is more positive than a positive voltage standoff and when the voltage across the bidirectional clamping apparatus is more negative than a negative voltage standoff; and a control element in series with the bidirectional clamping apparatus, the control element and the bidirectional clamping apparatus providing a current path across the power bus when a magnitude of a voltage on the power bus exceeds a positive voltage threshold or a negative voltage threshold, the positive voltage threshold being greater than the positive voltage standoff of the bidirectional clamping apparatus and the negative voltage threshold being more negative than the negative voltage standoff of the bidirectional clamping device.

Abstract: Architecture for managing clutch height in an optical navigational device such as a computer mouse. In one embodiment for a mouse, a feature can be molded into the bottom case that limits the clutch height by occluding the reflected light to the image sensor when the device is lifted from the tracking surface. Tracking is disabled when the clutch height threshold is exceeded, and re-enabled when the device is brought under the distance clutch height threshold. The device includes firmware controlled algorithm adjustments to one or more correlation parameters. User interfaces may also be employed to implement various aspects of the embodiments discussed herein.

Abstract: Provided is a relay unit that can sufficiently suppress defects that are caused by an insulation failure of insulating member that insulates and separates a load power supply from a device power supply, and a method for controlling a relay circuit. A control unit includes an insulating member diagnosis unit that performs diagnosis of an insulation failure of the capacitor.

Abstract: A power conversion system including a DC main power supply for supplying a DC voltage, boosting circuits for performing a retrogression operation of boosting the DC voltage and comprising driving circuits, an inverter circuit for converting the DC voltage into an AC voltage, a motor/generator for receiving the AC voltage, and a control circuit for outputting a control signal to the driving circuits and stopping an operation of a faulty boosting circuit of the boosting circuits when one of the boosting circuits is faulty, for setting power control values depending on a number of remaining non-faulty boosting circuits of the boosting circuits, and for controlling the remaining non-faulty boosting circuits and the inverter circuit based on the power control values, wherein the inverter circuit and the boosting circuits perform a regeneration operation of supplying regeneration power to the DC main power supply, peripheral equipment, and/or a DC auxiliary power supply.

Abstract: A semiconductor abnormality detection circuit includes a semiconductor circuit and a controller which controls supply of power to a load. The semiconductor circuit includes a switch device disposed between a power source and the load, and a sense signal generator generating a sense signal corresponding to a current flowing through the switch device. The controller judges that the semiconductor circuit is operating normally if the instruction voltage level is equal to an off-voltage corresponding to non-energization of the switch device and a voltage of the sense signal is equivalent to a prescribed off-voltage corresponding to non-energization of the switch device or the instruction voltage level is equal to an on-voltage corresponding to energization of the switch device and a voltage of the sense signal is equivalent to a prescribed on-voltage corresponding to a steady energization state of the load.

Abstract: An electrode unit formed by mounting a discharge electrode in a first housing, and a power supply control unit formed by locating a high voltage generation circuit that outputs a pulsating high voltage to the electrode unit in a second housing are electrically connected via a shielded cable, and a capacitor is connected to a ground line electrically connecting between a shield layer of the shielded cable and the ground.

Abstract: A converter can selectively use reactors through an ON-OFF control on relays by an electronic control unit. The first reactor is disposed as a component of the converter separately from a main battery. On the other hand, the second reactor is so disposed as to have a heat transfer path between the second reactor and the main battery. At least based on the output from the temperature sensor, in a low temperature state of the main battery, the electronic control unit turns off the first relay, and turns on the second relay, thereby configuring a reactor of the converter by using the second reactor.

Abstract: A conventional cable comprises three conductive cores, each provided with a respective conductive sheath which are together housed within an outer insulating sheath. The three-core cable is used to transmit electric power in the form of dc current and single-phase ac current. A first one of the conductive cores is used to transmit dc current, while a second conductive core is used to transmit the return dc current. The third conductive core is used to transmit the single-phase ac current. The return ac current is transmitted along all three conductive outer sheaths in parallel. The cable is used to transmit dc current from a wind turbine generator to a substation where it is converted to ac before connecting to the mains electricity grid. The ac current is used to power auxiliary circuitry of the wind turbine generator when the output of the turbine generator falls below a give value.

Abstract: A proximity switch assembly is provided and includes a proximity sensor comprising a first electrode comprising first fingers and a second electrode comprising second fingers, wherein the first and second fingers are interdigitated with a varying density and a variable spacing therebetween along a first direction. The proximity switch assembly also includes control circuitry processing a signal in response to a user activation of the proximity sensor and determining sliding activation of the sensor in the first direction. The switch assembly may determine a tap, stable press and sliding activations.

Abstract: A system, apparatus, and procedure for controlling a fan module. The system comprises a chassis having a backplane, at least one fan module arranged in the chassis, and a profile switch. In one embodiment, the profile switch is arranged in the chassis. Each fan module includes at least one fan and a fan module controller arranged to receive a control signal from a shelf controller. The profile switch is arranged to signal the fan module controller so as to control the at least one fan based on operating profiles corresponding to selected switch positions of the switch.

Abstract: The present disclosure may provide an electric transmitter which may be used to provide wireless power transmission (WPT) while using suitable WPT techniques such as pocket-forming. Transmitter may operate as power source for rescue devices where wired power sources are not feasible because local infrastructure may be damaged or destroyed. In some embodiments, transmitters may include one or more antennas connected to at least one radio frequency integrated circuit (RFIC) and one microcontroller. In other embodiments, transmitters may include a plurality of antennas, a plurality of RFIC or a plurality of controllers. In addition, transmitters may include communications components which may allow for communication to various electronic equipment including phones, computers, GPS and others.

Abstract: A system and method for providing a rapid disconnect safety system (RDSS) are disclosed. In a first aspect, the system comprises a rapid shutdown module (RSM) located within a predetermined distance to a photovoltaic (PV) array system and a rapid shutdown controller (RSC) coupled to the RSM, wherein the RSM is remotely located relative to the RSC. When activated, the RSC opens at least one contactor of the RSM to disconnect a PV source circuit of the PV array system. In a second aspect, the method comprises providing a rapid shutdown module (RSM) located within a predetermined distance to a PV array system, coupling a rapid shutdown controller (RSC) to the RSM wherein the RSM is remotely located relative to the RSC, activating the RSC to open at least one contactor of the RSM, and disconnecting a PV source circuit of the PV array system.

Abstract: The invention can provide for a power supply, and in particular a fieldbus power supply, comprising a plurality of power supply modules each arranged to output power on a plurality of channels; a current share controller arranged to share an output current requirement across the plurality of power supply modules and wherein; at least a second of the plurality of channels in each module is arranged to track the loading of the first of the plurality of channels in each respective module and so that a multichannel and multimodule power supply with reduced power handling requirements for each module can be provided.

Abstract: A signal modulation method for a receiving-end module of an induction type power supply system includes configuring a plurality of modulation periods corresponding to a modulation signal; performing modulation on a first terminal of an induction coil of the receiving-end module during the ith modulation period among the plurality of modulation periods, wherein i is an odd number; and performing modulation on a second terminal of the induction coil of the receiving-end module during the jth modulation period among the plurality of modulation periods, wherein j is an even number; wherein the second terminal does not undergo modulation when the first terminal is being modulated, and the first terminal does not undergo modulation when the second terminal is being modulated.

Abstract: A method of over-temperature protection for a power switch, can include: (i) generating a sensing signal by sensing a temperature of the power switch; (ii) determining a temperature threshold signal based on a conduction voltage between first and second terminals of the power switch, where a value of the temperature threshold signal is reduced as the conduction voltage increases; and (iii) turning off the power switch when the sensing signal is greater than or equal to the temperature threshold signal.

Abstract: Provided are an emergency power supply method for a container terminal and a container terminal, which supply emergency electric power by using a cargo handling machine as a power source in an emergency situation due to electric outage of the container terminal, or the like. In an emergency where an incoming panel (2) of the container terminal (1) cannot supply electric power, yard cranes (11a) to (11c) (cargo handling machines) configured to operate in the container terminal (1) are used as power sources, in which one (the yard crane (11a)) of the plurality of yard cranes (11a) to (11c) (cargo handling machines) is used as a reference power source, and power conditioning units are included which configured to match phases of electric powers of the remaining yard cranes (11b) and (11c) to a phase of electric power of the reference power source, such that electric power is supplied from the plurality of yard cranes (11a) to (11c) to the incoming panel (2).

Abstract: A method of tracking an object including producing a guided surface wave with a guided surface waveguide probe, the guided surface wave having sufficient energy density to power object identification tags across an area of interest; receiving return signals from a tag of interest at plural receivers, the tag of interest associated with an object and the receivers that receive the return signals change over time as the tag moves with the associated object in the area of interest; and identifying a series of geolocations at which the object was present as a function of time according to the received reply signals from the tag.

Abstract: A corona igniter assembly 20 comprises an ignition coil assembly 22, a firing end assembly 24, and a metal tube 26 connecting the ignition coil assembly 22 to the firing end assembly 24. A rubber boot 28 is disposed in the metal tube 26 and compressed symmetrically between a coil output member 30 of the ignition coil assembly 22 and an insulator 42 of the firing end assembly 24. Thus, the rubber boot 28 fills any air gaps and provides a hermetic seal between the ignition coil assembly 22 and the firing end assembly 24 to prevent unwanted corona discharge from forming from those air gaps.

Abstract: A heat pipe cooled capacitor includes a capacitor body having opposing first and second ends and an opening defined between the opposing ends. A first heat pipe is thermally and electrically connected to the first end of the capacitor body. A second heat pipe is positioned at least partially through the opening of the capacitor body. The second heat pipe is thermally connected to the second end of the capacitor body, and electrically isolated from the first heat pipe.

Abstract: An object identification system includes a guided surface waveguide probe that produces a guided surface wave; and an object identification tag having a receive structure and a tag circuit, the tag circuit coupled to the receive structure and electrically powered as a load on the probe by conversion of the guided surface wave to electrical current at the receive structure, the tag circuit configured to emit a return signal containing a tag identifier when electrically powered by presence of the guided surface wave.