Abstract: A method of controlling a variable speed constant frequency (VSCF) power converter is provided. The method includes receiving a determination that a sensed AC current output has exceeded a predetermined limit. The AC current output is converted from a DC voltage and has a constant frequency. The DC voltage is converted from a variable frequency AC voltage. The variable frequency AC voltage is generated in response to a mechanical energy input having a varying parameter. The method further includes decreasing the DC voltage in response to a determination that the sensed AC current output has exceeded the predetermined limit.

Abstract: A DC-DC converter includes an output-side storage capacitor arrangement which has a parallel circuit formed of an electrolytic capacitor, a ceramic capacitor and a circuit arrangement. The circuit arrangement has a series circuit formed of a hybrid electrolytic capacitor and a suppressor diode as well as a resistance connected in parallel with the hybrid electrolytic capacitor.

Abstract: A circuit board with an electrostatic discharge protection mechanism and an electronic apparatus having the same are provided. The circuit board includes a substrate, at least one signal trace, and a conductive element. The at least one signal trace is disposed on the substrate. The conductive element is electrically connected to a ground plane of the substrate and crosses over the at least one signal trace. The conductive element has at least one discharging portion. The position of the at least one discharging portion corresponds to the at least one signal trace. A gap exists between the at least one discharging portion and the at least one signal trace. A static electricity of the at least one signal trace is discharged to the at least one discharging portion.

Abstract: A composite surge arrester assembly and method of construction protects electrical devices from voltage spikes by limiting the voltage supplied to an electric device by shorting to ground any unwanted voltages above a safe threshold. The composite surge arrester assembly forms an arrester array from an alternating arrangement of deformable conductive contact plates, and metal oxide varistor (MOV) blocks. The contact plates bend and have various types of surfaces to create uniform contact with MOV blocks. The MOV blocks are dimensioned to minimize metal mass. An epoxy impregnated fiberglass reinforcement member wraps around the arrester array at an angle between 0° to 90°, and preferably 45°, relative to the axial disposition of arrester array, while also purging air pockets therebetween. The reinforcement member dampens acoustic shock waves from high current impulses while maintaining electrical contact between MOV blocks. A polymer housing encapsulates the epoxy and fiberglass reinforced arrester array.

Abstract: In an embodiment, A device includes an operational amplifier and a feedback loop. The feedback loop is coupled between a first input of the operational amplifier and an output of the operational amplifier. The feedback loop is controllable according to a saturation of the operational amplifier. In one example, the device is incorporated in a microcontroller.

Abstract: In some examples, a device includes at least one input node configured to receive a signal indicating a current through a conductor to a load. The device also includes circuitry configured to determine a first magnitude of the received signal in a first frequency range by applying a first bandpass filter to the received signal. The circuitry is also configured to determine a second magnitude of the received signal in a second frequency range by applying a second bandpass filter to the received signal. The processing circuitry is further configured to determine that an electric arc has occurred on the conductor based on the first magnitude and the second magnitude.

Abstract: Provided is a power wiring device that can suppress reduction of electricity generation efficiency due to the external environment. The power wiring device includes: a plurality of circuit modules each including a first connector and a second connector; and a wiring member including a third connector that is mechanically and electrically attachable to and detachable from the first connector and a fourth connector that is mechanically and electrically attachable to and detachable from the second connector, and in which the third connector and the fourth connector are electrically connected to one another. The plurality of circuit modules includes: an energy harvesting module as a circuit module that can output, from the first connector and the second connector, electric power obtained through energy harvesting; and a load module as a circuit module that can consume electric power input from the first connector and electric power input from the second connector.

Abstract: An LC composite component comprising an element body, a helically wound coil disposed in the element body, and a capacitor disposed on an outer circumferential side of the coil in the element body. When viewed in an axial direction of the coil, the element body is rectangular, and the capacitor is disposed between at least two sides of the element body and the coil.

Abstract: In one embodiment, a method for operating a PoE and PoDL hub is provided. The method comprises: ascertaining if an Ethernet connection has been formed with an operating device with the PoE and PoDL hub; if no Ethernet connection has been formed, then sensing whether the operating device is an Ethernet powered device; if the operating device is an Ethernet powered device, then providing power to the operating device; if the operating device is determined not to be an Ethernet powered device, then sensing whether the operating device is a PoDL device; and if the operating device is a PoDL device, then providing power to the operating device.

Abstract: A power management integrated circuit (PMIC) is provided for extracting power from an energy harvester. The PMIC includes a power point tracker configured for defining an optimum operational voltage for efficiently extracting power from any type of energy harvesters such as electromagnetic energy sources, photovoltaic cells or thermal electric generators. The power management integrated circuit (PMIC) also relates to an energy harvesting system that includes an electromagnetic energy source and an impedance connected to the PMIC.

Abstract: A system may include a power supply that generates a first voltage. The power supply may couple upstream from an electrical load. The electrical load may operate based at least in part on the first voltage. In some cases, a solid-state circuit breaker may be coupled between the power supply and the electrical load. Furthermore, a control system may be communicatively coupled to the power supply, the electrical load, and the solid-state circuit breaker. The control system may receive an operational status from the solid-state circuit breaker and may update a visualization rendered on a graphical user interface based at least in part on the operational status. The operational status may indicate an operation of the solid-state circuit breaker coupling the power supply to the electrical load.

Abstract: The present disclosure pertains to systems and methods for monitoring traveling waves in an electric power system. In various embodiments, a data acquisition subsystem may acquire electric power system signals. A traveling wave detection subsystem may detect two or more traveling waves based on the electric power system signals and determine a location of an event triggering the traveling waves. A traveling wave security subsystem may selectively generate a restraining signal based on the location of the event as within a blocking zone. A protection action subsystem may implement a protective action when the location is outside of a blocking zone. In various embodiments, a protective action will not be implemented for traveling waves launched from known locations of switching devices operating normally. Further, protective actions may be restrained if a magnitude of a traveling wave differs from an expected value based on a pre-fault voltage.

Abstract: An apparatus includes a safety fault interrupter circuit. The safety fault interrupter circuit includes a safety fault monitor coupled to a first bias node and configured to selectively assert a fault interrupter signal based at least in part on a first bias voltage and a first power consumption. The safety fault interrupter circuit also includes a power fault monitor for the safety fault monitor, wherein the power fault monitor is coupled to a second bias node and is configured to selectively assert the fault interrupter signal based at least in part on a second bias voltage and a second power consumption that is less than the first power consumption.

Abstract: A buck-boost converter comprises generating a first ramp using a first current source having a current level proportional to an input voltage of a buck-boost converter, and a second ramp using a second current source having a current level proportional to an output voltage of the buck-boost converter, generating a first threshold voltage proportional to a difference between the input voltage and the output voltage of the buck-boost converter, and a second threshold voltage proportional to the input voltage of the buck-boost converter, terminating a gate drive signal of a first low-side switch of the buck-boost converter based upon comparing the first threshold voltage and the first ramp, and terminating a gate drive signal of a second high-side switch of the buck-boost converter based upon comparing the second threshold voltage and the second ramp.

Abstract: A hot swapping protection device for Power over Ethernet which has a state setting switch group, an interface circuit, a power supply device, a packet switching controller, multiple isolation coil sets, and multiple connectors. The packet switching controller receives a digital state value P2 of the interface circuit and a digital signal P1 of the state setting switch group and bitwise compares P1 and P2 so as to output a command to control the DC voltage outputs of the power supply device. The power supply device has a digital power controller and an analog power controller having multiple voltage output terminals for providing DC voltages to the multiple connectors. Before removing a cable connected to a connector, all voltage output states of the voltage output terminals corresponding to the connector are set to a cutoff state, so that sparks generation can be avoided during subsequent cable plug-in and unplugging.

Abstract: A PV module, which includes PV+ and PV? output ports. An output capacitor Cout is connected to PV+ or PV? port through an electric switch. One end of a power inductor L1 is connected to OUT?, and the other end is grounded. The power inductor L1 is connected with a resonant capacitor C1 and an impedance resistor R2 in parallel. One end of a blocking capacitor C2 is used as the PLC+ port, one end of a blocking capacitor C3 is used as the PLC? port, and signal sources are connected to OUT+ and OUT? in parallel and send “Keep Alive” signals based on SunSpec communication protocol. PLC+ port and PLC? port are connected to a signal coupling input port of a control IC, and the control IC controls the electric switch. When the signal is decoded and extracted, the electric switch will remain on, otherwise it will be off.

Abstract: Systems and methods are provided for signal processing. An example error amplifier for processing a reference signal and an input signal associated with a current of a power conversion system includes a first operational amplifier, a second operational amplifier, a first transistor, a second transistor, a current mirror component, a switch, a first resistor and a second resistor. The first operational amplifier includes a first input terminal, a second input terminal and a first output terminal, the first input terminal being configured to receive a reference signal. The first transistor includes a first transistor terminal, a second transistor terminal and a third transistor terminal, the first transistor terminal being configured to receive a first amplified signal from the first output terminal, the third transistor terminal being coupled to the second input terminal.

Abstract: A control architecture for electric vehicle wireless power transmission systems that may be segmented so that certain essential and/or standardized control circuits, programs, algorithms, and the like, are permanent to the system and so that other non-essential and/or augmentable control circuits, programs, algorithms, and the like, may be reconfigurable and/or customizable by a user of the system. The control architecture may be distributed to various components of the wireless power system so that a combination of local or low-level controls operating at relatively high-speed can protect critical functionality of the system while higher-level and relatively lower speed control loops can be used to control other local and system-wide functionality.

Abstract: An electronic protection device (1) for a LV electric line (100) including one or more conductors (P, N), comprising: one or more pairs of electric contacts (2) electrically connectable with corresponding conductors of said electric line and adapted to be mutually coupled or decoupled, said electric contacts being coupled when said protection device is in a closed state and being decoupled when said protection device is in a tripped state or open state; a control unit (3) comprising a controller (31) including data processing resources, said controller being capable of testing the operating conditions of said electronic protection device; a signalling arrangement (7) including one or more signalling devices (71) driven by said controller. Said signalling arrangement comprises a first signalling device (71) adapted to provide light signals (L1, L2, L3) indicative of the operating conditions for said electronic protection device, when said electronic protection device is in a closed state.

Abstract: A multi-level switching power converter includes a string of N upper transistors and a string of N lower transistors, where N is an integer greater than one. The N upper transistors are electrically coupled in series between a first power node and a switching node, and the N lower transistors are electrically coupled in series between the switching node and a reference node. The multi-level switching power converter further includes N?1 flying capacitors, an inductor, a bypass transistor, and a controller. The bypass transistor is electrically coupled between the switching node and the reference node. The controller is configured to (a) control switching of the N upper transistors and the N lower transistors and (b) cause the bypass transistor to operate in its on state in response to all of the N lower transistors operating in their respective on states.