Abstract: A solid state switch module is provided for use in a power distribution network including an input differential protection connection for receiving a measured current value from an upstream module. The solid state switch module also includes an output differential protection connection for sending a measured current value. The solid state switch module includes a trip outlet for sending a trip signal to an upstream solid state switch, and a trip inlet for receiving a trip signal from a downstream solid state switch. The trip inlet is operably coupled to the switch. A current sensor measures the current value of a connected power transmission line across the solid state switch module. A summer adds a current input from a parallel module with the current measures by the current sensor. A comparator determines whether an amount of current lost between the solid state switch module and an upstream module is acceptable.

Abstract: A power management and distribution system includes a source block having a power distribution line, wherein the power distribution line includes a distribution switch. At least one load block is in operable communication with the power distribution line and having a plurality of load block power output lines, wherein each of the plurality of load block power output lines includes a load switch. Further included is a plurality of loads each carried power by at least one of the plurality of load block power output lines. Yet further included is a protection logic unit comprising at least one algorithm for comparing a power characteristic to a power characteristic threshold at a plurality of locations, wherein the protection logic unit selectively determines which of the source block switches, distribution switches and the load switches of the plurality of load block power output lines are opened based on at least one comparison.

Abstract: A power distribution system includes a plurality of power sources for generating power. Also included is at least one power routing element in operable communication with each of the plurality of power sources, the at least one power routing element being configured to selectively receive power from the plurality of power sources. Further included is at least one load in operable communication with the at least one power routing element, wherein the at least one power routing element controllably determines which of the plurality of power sources to selectively receive power from.

Abstract: A printed wiring board (PWB) includes a substrate having first and second opposing surfaces and a busbar coupled to the substrate. The busbar includes a power input connector and a cross-sectional dimension configured and disposed to carry at least 100 amperes. At least one semiconductor device is mounted to the busbar. The at least one semiconductor device includes an input electrically coupled to the busbar and an output. One or more output conductors are electrically coupled to the output of the at least one semiconductor device. The one or more output conductors include a cross-sectional dimension configured and disposed to carry at least 50 amperes.

Abstract: A current measurement and comparing assembly for a power distribution system includes a solid state contactor module having a control section and a power section, wherein the power section includes at least one solid state switch. Also included is a current sensor disposed in the control section and in operable communication with the at least one solid state switch, wherein the current sensor distributes current data to a switch control configured to control the at least one solid state switch and distributes current data to a current measurement and comparison circuit.

Abstract: An interface module includes a first side having a plurality of input connectors of a same cross-sectional area corresponding to a same amperage rating, a second side having a plurality of output connectors of different cross-sectional areas from each other corresponding to different amperage ratings from each other, and wiring in the interface module configured to connect a first number of input connectors to a first one of the output connectors having a first amperage rating, and configured to connect a second number of input connectors to a second one of the output connectors having a second amperage rating different from the first amperage rating.

Abstract: An overvoltage protection system for a power generating system includes a generator control relay (GCR) controlling a conduction path through a generator exciter field, a flyback impedance in parallel communication with the generator exciter field, the flyback impedance configured to dissipate energy from the generator exciter field in response to opening of the conduction path, a gate drive configured to open and close the GCR, and an overvoltage prevention unit in signal communication with the gate drive, the overvoltage prevention unit configured to monitor a voltage and a current associated with the generator and selectively open and close the conduction path in response to the monitored voltage and current.

Abstract: A multi-phase power control switch has multiple power controller channels, each of which includes at least one power controller having a microprocessor. Each of the microprocessors cross communicates with each other of the microprocessors using a data bus.

Abstract: An emergency power system for use on an aircraft includes an emergency electrical generator coupled to a mechanical power source for generating emergency electrical power. An electrical power distribution network connects the emergency electrical generator to a plurality of electrical loads. A controller controls the electrical power distribution network to selectively couple and decouple the electrical loads to and from the emergency electrical generator based upon a priority rank assigned to each of the electrical loads.

Abstract: A solid-state power regulator (SSPR) regulates power delivered to a frequency tolerant load from a wild-source generator. The SSPR includes a solid-state switching device and a controller. The solid-state switching device is turned On to deliver power from the wild-source generator to the frequency-tolerant load and Off to prevent the delivery of power to the frequency-tolerant load. The controller monitors the power delivered to the frequency-tolerant load and selectively modulates the solid-state switching device to regulate the power delivered.

Abstract: An example method of detecting a generator overvoltage condition includes predicting a primary control current to provide a predicted control current, monitoring the primary control current, and detecting a generator overvoltage condition based on a comparison of the predicted control current to the primary control current. The method interrupts the primary control current based on the comparing.

Abstract: An emergency power system is useable on an aircraft having a gas turbine engine with a low pressure spool and a high pressure spool. The emergency power system includes an emergency electrical generator coupled to the low pressure spool during an emergency for generating emergency electrical power and one or more additional electrical power sources. A plurality of electrical loads are electrically connected to the emergency electrical generator and the one or more additional electrical power sources. Aircraft sensors provide data regarding emergency electrical power availability and emergency electrical power demand. A controller for controlling the emergency electrical generator determines emergency electrical power demand and emergency electrical power availability based upon data from the aircraft sensors. The controller controls the emergency electrical generator based upon the emergency electrical power demand and the emergency electrical power availability.

Abstract: A method comprises determining whether a ground fault on a bus (110) operative to drive the system (100) exceeds a first threshold level, (502) receiving values of phase currents of a first motor, (504) calculating a sum of the values of the phase currents of the first motor (106) responsive to determining that the ground fault on the bus exceeds the first threshold value, and (504) determining whether the sum of the values of the phase currents of the first motor (106) exceeds a second threshold value (506).

Abstract: A method for controlling an aircraft power system having a plurality of generators includes determining a load set for controlling aircraft power as a function of a number of generators providing power and as a function of a health status of a load to be included in said load set.

Abstract: A method comprises determining whether a ground fault on a bus (110) operative to drive the system (100) exceeds a first threshold level, (502) receiving values of phase currents of a first motor, (504) calculating a sum of the values of the phase currents of the first motor (106) responsive to determining that the ground fault on the bus exceeds the first threshold value, and (504) determining whether the sum of the values of the phase currents of the first motor (106) exceeds a second threshold value.