Abstract: A power system includes a direct current (DC) channel connected to a high-voltage direct current (HVDC) bus, an HVDC bus ground fault protection device connected to the HVDC bus, and a DC channel ground fault protection device connected to the DC channel. The HVDC bus ground fault protection device is operatively associated with the DC channel ground protection fault device through the DC channel to cause the DC channel ground fault protection device to disconnect the DC channel from the HVDC bus based on a comparison of current imbalance in the DC channel with a DC channel current imbalance threshold when the HVDC bus ground fault protection device determines that current leakage from the HVDC bus exceeds a current leakage threshold of the HVDC bus.

Abstract: An electrical wall box having plurality of wire power terminals on exterior of electrical wall box, wire power terminals are electrically connected to one of plurality of insulated distribution busses within electrical wall box, each distribution buses having one or more interrupt bus switches electrically connected therein; each distribution buses has first quick connect terminal electrically connected thereto one distribution buses; wherein electrical wall box further includes plurality of switch wiring terminals on an exterior of electrical wall box, each plurality of switch wiring terminals includes insulated electrical tap connecting one switch wiring terminals to one plurality of internal insulated distribution busses or to quick connect terminal within electrical wall box; one or more pluggable electrical receptacles, each one or more pluggable electrical receptacles includes two or more second quick connect terminals to electrically connect thereto one of said one or more first quick connect terminals

Abstract: An electrical wall box having a plurality of wire in and wire out power terminals on an exterior of the electrical wall box, wherein each set of wire in and wire out power terminals are electrically connected to one of a plurality of internal insulated distribution busses within the electrical wall box, each of the distribution buses has one or more first quick connect terminals electrically connected thereto one of the distribution buses; wherein electrical wall box further includes a plurality of switch wiring terminals on an exterior of the electrical wall box, each of the plurality of switch wiring terminals includes an insulated electrical tap connecting one of the switch wiring terminals to one of the plurality of internal insulated distribution busses or to a quick connect terminal within the electrical wall box; one or more pluggable electrical receptacles, each of the one or more pluggable electrical receptacles includes two or more second quick connect terminals to electrically connect thereto one o

Abstract: An electrical wall box having plurality of wire power terminals on exterior of electrical wall box, wire power terminals are electrically connected to one of plurality of insulated distribution busses within electrical wall box, each distribution buses having one or more interrupt bus switches electrically connected therein; each distribution buses has first quick connect terminal electrically connected thereto one distribution buses; wherein electrical wall box further includes plurality of switch wiring terminals on an exterior of electrical wall box, each plurality of switch wiring terminals includes insulated electrical tap connecting one switch wiring terminals to one plurality of internal insulated distribution busses or to quick connect terminal within electrical wall box; one or more pluggable electrical receptacles, each one or more pluggable electrical receptacles includes two or more second quick connect terminals to electrically connect thereto one of said one or more first quick connect terminals

Abstract: An electrical wall box having plurality of wire power terminals on exterior of electrical wall box, wire power terminals are electrically connected to one of plurality of insulated distribution busses within electrical wall box, each distribution buses having one or more interrupt bus switches electrically connected therein; each distribution buses has first quick connect terminal electrically connected thereto one distribution buses; wherein electrical wall box further includes plurality of switch wiring terminals on an exterior of electrical wall box, each plurality of switch wiring terminals includes insulated electrical tap connecting one switch wiring terminals to one plurality of internal insulated distribution busses or to quick connect terminal within electrical wall box; one or more pluggable electrical receptacles, each one or more pluggable electrical receptacles includes two or more second quick connect terminals to electrically connect thereto one of said one or more first quick connect terminals

Abstract: An electrical wall box having a plurality of wire in and wire out power terminals on an exterior of the electrical wall box, wherein each set of wire in and wire out power terminals are electrically connected to one of a plurality of internal insulated distribution busses within the electrical wall box, each of the distribution buses has one or more first quick connect terminals electrically connected thereto one of the distribution buses; wherein electrical wall box further includes a plurality of switch wiring terminals on an exterior of the electrical wall box, each of the plurality of switch wiring terminals includes an insulated electrical tap connecting one of the switch wiring terminals to one of the plurality of internal insulated distribution busses or to a quick connect terminal within the electrical wall box; one or more pluggable electrical receptacles, each of the one or more pluggable electrical receptacles includes two or more second quick connect terminals to electrically connect thereto one o

Abstract: Adhesive compositions that contain thermally conductive carbon-based materials that are also electrically insulated; methods for using such adhesive compositions and methods for their preparation.

Abstract: A dual-source multi-mode power supply system includes a battery power supply, a first DC bus, an electric power generating system and a second DC bus. The battery power supply includes a DC-DC converter circuit configured to convert a first DC voltage into a second DC voltage for supplying power to the first DC bus. The electric power generating system includes a permanent magnet generator and an active rectifier circuit configured to convert a variable-voltage/variable-frequency output into a constant high-voltage direct current (HVDC) to supply power to a second DC bus. An electronic coordinated control module determines a load request, and controls one or more switch such that the power from the first DC bus and power from the second DC bus are delivered to the loads to satisfy the load request.

Abstract: An electrical power generating system comprises a first permanent magnetic generator (PMG) stator winding of a generator machine, a first active rectifier communicatively connected to the first PMG stator winding, the first active rectifier operative to receive alternating current (AC) from the first PMG stator winding and convert the AC to direct current (DC), a direct current link communicatively connected to the first active rectifier, wherein the first active rectifier is operative to output the DC to the direct current link, a second PMG stator winding of the generator machine, and a second active rectifier communicatively connected to the second PMG stator winding, the second active rectifier operative to receive AC from the second PMG stator winding and convert the AC to DC, the second active rectifier communicatively connected to the direct current link and operative to output DC to the direct current link.

Abstract: A power management and distribution (PMAD) system includes a main DC bus, an auxiliary DC bus, a power converter, one or more hybrid solid-state circuit breakers, and a controller. The power converter converts power from the main DC bus to provide a regulated output to the auxiliary bus. Each hybrid SSCB includes a main switch connected between the main DC bus and a load and an auxiliary switch connected between the auxiliary DC bus and the load. The controller selectively turns the main switch and the auxiliary switch On/Off to selectively supply power from the main DC bus and/or the auxiliary DC bus to the load, and to selectively regulate the voltage on the auxiliary DC bus.

Abstract: According to one embodiment of the present invention, a variable frequency generator is provided. The variable frequency generator can comprise a main stator comprising multi-phase armature windings and an exciter field winding; and a rotating portion comprising an exciter multi-phase windings, a main field winding, and an amplification component between the exciter windings and the main field winding, wherein the amplification component operates at a variable duty cycle to maintain a phase voltage of the main stator armature windings near independent of a shaft speed of the variable frequency generator.

Abstract: An active damping switching system includes an active damping switching apparatus, including a damping capacitor, a damping resistor coupled to the damping capacitor, an input switch coupled to the damping capacitor, an oscillator coupled to the input switch and configured to open and close the input switch at a frequency, a direct current power source coupled to the active damping switching apparatus, a constant power load and an input filter disposed between the constant power load and the active damping switching apparatus.

Abstract: An assembly for operating a DC synchronous machine according to an exemplary aspect of the present disclosure includes, among other things, a controller that is configured to determine a position of a rotating portion utilizing a carrier signal, adjust current supply to a field winding, and monitor and adjust operation of the DC synchronous machine based on various electrical parameters relating to the carrier signal. A method for operating a DC synchronous machine is also disclosed.

Abstract: Adhesive compositions that contain thermally conductive carbon-based materials that are also electrically insulated; methods for using such adhesive compositions and methods for their preparation.

Abstract: An assembly for a direct current (DC) synchronous machine, according to an exemplary aspect of the present disclosure includes, among other things, a stationary portion including a direct current (DC) armature winding and a rotating portion including alternating current (AC) field winding configured to supply DC output to the DC armature winding. A rotating inverter is configured to selectively communicate current to the AC field winding such that a frequency of the current is adjusted to approach synchronization with a position of the rotating portion. A method for generating DC output from a DC synchronous machine is also disclosed.

Abstract: A power controller controls power to a load and includes a primary current sensor, a controller and a current source. The primary current sensor includes a primary conductor and an auxiliary conductor. The primary conductor carries a primary current to the load and the auxiliary conductor carries an auxiliary current in the opposite direction of the primary current to provide partial flux cancellation. The primary current sensor provides an output voltage based upon a magnetic field generated by the primary current and auxiliary current. The controller determines the primary current based upon the output voltage and the auxiliary current. The current source provides the auxiliary current. The controller controls the current source to provide the auxiliary current to the auxiliary conductor if the primary current is greater than a threshold value.

Abstract: A hybrid permanent magnet machine has a stator including armature windings. A rotor includes permanent magnets, a main field winding, and a rechargeable energy source. An output voltage control circuit, including an H bridge circuit configured to provide control current magnitude and direction in the main field winding to control the current passing across the main field windings.

Abstract: A ganged electrical fitting having an integral cover plate and two or more electrical components, such as a switch, a receptacle, an outlet, a fan switch, a dimmer and combinations thereof, the ganged electrical component/cover plate being secured via screws through the cover plate into a wall box. Electrical component wires are secured to power wires coming from the wall box via quick-connectors or wirenuts.

Abstract: A ganged electrical fitting having an integral cover plate and two or more electrical components, such as a switch, a receptacle, an outlet, a fan switch, a dimmer and combinations thereof, the ganged electrical component/cover plate being secured via screws through the cover plate into a wall box. Electrical component wires are secured to power wires coming from the wall box via quick-connectors or wirenuts.