An electrical supply system for an aircraft includes a generator having a neutral point, an AC network, a bipolar DC network, and a neutral point clamped converter. The neutral point is connected to ground, in at least one operating mode. The converter has an AC side with AC connectors couplable with at least one phase of the generator. The converter also has a DC side with a first DC connector, a second DC connector and a neutral DC connector. The AC side of the converter is coupled with the generator, the DC side is coupled with the bipolar DC network, and the neutral DC connector is connected to ground. The convertor provides a DC voltage on the DC side upon receiving an AC voltage on the AC side, and provides an AC voltage on the AC side upon receiving a DC voltage on the DC side.

An electrical supply system for an aircraft includes a generator having a neutral point, an AC network, a bipolar DC network, and a neutral point clamped converter. The neutral point is connected to ground, in at least one operating mode. The converter has an AC side with AC connectors couplable with at least one phase of the generator. The converter also has a DC side with a first DC connector, a second DC connector and a neutral DC connector. The AC side of the converter is coupled with the generator, the DC side is coupled with the bipolar DC network, and the neutral DC connector is connected to ground. The convertor provides a DC voltage on the DC side upon receiving an AC voltage on the AC side, and provides an AC voltage on the AC side upon receiving a DC voltage on the DC side.

A system and method for capturing and redistributing energy captured from vehicular motion.

A system and method for capturing and redistributing energy captured from vehicular motion.

A plurality of external power (EP) sources can be controlled with a single EP switch. A plurality of EP states can be determined, each EP state of the plurality of EP states being associated with one EP source from the plurality of EP sources. A highest EP state of the plurality of EP states can be determined. An EP indicator of the EP switch can be controlled based on the highest EP state.

A plurality of external power (EP) sources can be controlled with a single EP switch. A plurality of EP states can be determined, each EP state of the plurality of EP states being associated with one EP source from the plurality of EP sources. A highest EP state of the plurality of EP states can be determined. An EP indicator of the EP switch can be controlled based on the highest EP state.

A method operates a technical or non-technical system. At least one information element of a first type which relates to the system and is dependent on the respective system state of the system is transmitted according to the method from at least one first facility of the system to at least one second facility. The second facility uses at least one information element of a second type which originates neither from the first facility nor from a different facility of the system, i.e. it comes from a source other than the system, to estimate the system state, checks, on the basis of the estimated system state, whether the received information matches the estimated system state to a predefined extent, and, in the event of a match to the predefined extent, regards the information as trusted, and otherwise generates a warning signal indicating a possible data attack.

A vehicle comprising: an engine; an engine driven electrical power generator configured to be driven by the engine; a fuel cell; one or more vehicle subsystems; a memory storing a plurality of different power sharing templates, each power sharing template specifying different power supply sharing information; and a controller configured to: select a power sharing template from the plurality of power sharing templates; and control the engine driven electrical power generator and the fuel cell to supply electrical power to the one or more vehicle subsystems such that said supply of electrical power is proportioned between the engine driven electrical power generator and the fuel cell in accordance with the power supply sharing information specified in the selected power sharing template.

A vehicle comprising: an engine; an engine driven electrical power generator configured to be driven by the engine; a fuel cell; one or more vehicle subsystems; a memory storing a plurality of different power sharing templates, each power sharing template specifying different power supply sharing information; and a controller configured to: select a power sharing template from the plurality of power sharing templates; and control the engine driven electrical power generator and the fuel cell to supply electrical power to the one or more vehicle subsystems such that said supply of electrical power is proportioned between the engine driven electrical power generator and the fuel cell in accordance with the power supply sharing information specified in the selected power sharing template.

A buck converter uses flying capacitors and cross coupling. The flying capacitors reduce the voltage stress across the inductors and the devices, and may provide high efficiency at very low duty cycle ratios. In addition to the high efficiency performance, the converters may provide a significant reduction in area, since smaller inductors can be used compared to typical buck converters. An example of realization shows up to 90% efficiency at 0.5V output and 10 A load from a 3.6V input with small flying capacitors, compared to what is typically used in a switched capacitor converter.