An apparatus includes a DC-to-AC converter comprising a first output terminal and a second output terminal. The apparatus also includes a DC-to-DC converter comprising a third output. The DC-to-AC converter is configured to receive a DC input voltage from a DC power source, and to produce a first alternating output voltage at the first output terminal, and a second alternating output voltage at the second output terminal. The DC-to-DC converter is configured receive a DC input voltage from the DC power source, and to step down the DC input voltage at the third output.

An apparatus includes a DC-to-AC converter comprising a first output terminal and a second output terminal. The apparatus also includes a DC-to-DC converter comprising a third output. The DC-to-AC converter is configured to receive a DC input voltage from a DC power source, and to produce a first alternating output voltage at the first output terminal, and a second alternating output voltage at the second output terminal. The DC-to-DC converter is configured receive a DC input voltage from the DC power source, and to step down the DC input voltage at the third output.

A redundant power supply system for aircraft seats, includes: a first power supply module having a first AC to DC power converter configured to supply power to a first auxiliary board, the first auxiliary board being configured to supply power to a plurality of aircraft seats via a plurality of communication bus channels; a second power supply module having a second AC to DC power converter configured to supply power to a second auxiliary board, the second auxiliary board being configured to supply power to the plurality of aircraft seats via the plurality of communication bus channels; and a power supply link configured to connect the first auxiliary board and the second auxiliary board enabling the first AC to DC power converter to power the second auxiliary board via the power supply link.

A redundant power supply system for aircraft seats, includes: a first power supply module having a first AC to DC power converter configured to supply power to a first auxiliary board, the first auxiliary board being configured to supply power to a plurality of aircraft seats via a plurality of communication bus channels; a second power supply module having a second AC to DC power converter configured to supply power to a second auxiliary board, the second auxiliary board being configured to supply power to the plurality of aircraft seats via the plurality of communication bus channels; and a power supply link configured to connect the first auxiliary board and the second auxiliary board enabling the first AC to DC power converter to power the second auxiliary board via the power supply link.

A system comprises a converter that converts a grid AC signal to a first DC signal, a bus bar that receives the first DC signal and provides a combined DC signal, power electronics in communication with electrical loads via a breaker panel, where the power electronics convert, responsive to control signals, the combined DC signal into a second AC signal having variable frequency/variable voltage, and provides the second AC signal to the electrical loads, a processor that receives sensed characteristics and provides, based in part on the sensed characteristics, the control signals to the power electronics, and sensors that sense characteristics of the second AC signal and supply the sensed characteristics to the processor. The power electronics control the variable frequency and/or variable voltage of the second AC signal based at least in part on the one or more control signals to reduce negative effects on the breaker panel.

A system comprises a converter that converts a grid AC signal to a first DC signal, a bus bar that receives the first DC signal and provides a combined DC signal, power electronics in communication with electrical loads via a breaker panel, where the power electronics convert, responsive to control signals, the combined DC signal into a second AC signal having variable frequency/variable voltage, and provides the second AC signal to the electrical loads, a processor that receives sensed characteristics and provides, based in part on the sensed characteristics, the control signals to the power electronics, and sensors that sense characteristics of the second AC signal and supply the sensed characteristics to the processor. The power electronics control the variable frequency and/or variable voltage of the second AC signal based at least in part on the one or more control signals to reduce negative effects on the breaker panel.

The present disclosure provides systems and methods that may advantageously apply machine learning to detect and ascribe network interruptions to specific components or nodes within the network. In an aspect, the present disclosure provides a computer-implemented method comprising: mapping a network comprising a plurality of islands that are capable of dynamically changing by splitting and/or merging of one or more islands, wherein the plurality of islands comprises a plurality of individual components; and detecting and localizing one or more local events at an individual component level as well as at an island level using a disaggregation model.

Electrical power system includes: one or more rotary electric machines, each mechanically coupled to a gas turbine engine spool; a set of converter circuits connected to the one or more rotary electric machines for conversion between alternating (ac) and direct current (dc), wherein one or more rotary electric machines and the set of converter circuits are arranged to output a number R≥2 of dc power channels, each dc power channel having a respective index r=(1, . . . , R); and a group of N dc load channels connected to the R dc power channels by a switching arrangement, wherein N>R and each dc load channel has a respective index n=(1, . . . , N). The switching arrangement is operable to connect a number Q≥1 of the N load channels to at least two different power channels of the R power channels.

Electrical power systems for distributing electrical power in arrangements including one or more gas turbine engines; one such system includes: one or more rotary electric machines coupled to a gas turbine engine spool; a set of converter circuits connected to the rotary electric machines converting between alternating current (ac) and direct current (dc), wherein the rotary electric machines and the converter circuits output a number R≥2 of dc power channels, each channel having an index r=(1, . . . , R); and a group of N dc load channels connected to the R dc power channels by a switching arrangement, wherein N>R and each dc load channel has an index n=(1, . . . , N). For each respective N load channels, a current limiting device (CLD) limits the current flowing from power channels to a load connectable to the electrical power system via the respective load channel.

Electrical power systems for distributing electrical power in aircraft are described. One such electrical power system comprises: an electrical power source configured to output a number R≥2 of dc power channels, each dc power channel having a respective index r=(1, . . . , R); and a group of N dc load channels connected to the R dc power channels by a switching arrangement, wherein N>R and each dc load channel has a respective index n=(1, . . . , N). The system further comprises, for each respective one of a plurality of the N load channels, a current limiting device (CLD) operable to limit an amount of current flowing from the power channels to a load connectable to the electrical power system via the respective load channel. The electrical power source may comprise one or more batteries.