A method and apparatus for operating a power distribution system includes a power converter adapted to receive a power supply and convert the power supply to a power output, a set of solid state switching elements connected with the power output, a set of sensors adapted to sense a power demand at the set of solid state switching elements, and a controller module communicatively connected with the set of sensors and the set of solid state switching elements.

A propulsion and non-propulsive electrical generation system for an aircraft having at least one turbomachine and at least two pairs of rotors, the rotors of the same pair of rotors being symmetrically opposite on the aircraft with respect to the same center of symmetry, at least four motors each driving a rotor, at least one generator coupled to a turbomachine, an even number of power lines and at most equal to the number of rotors, each power line having at least one propulsion branch coupled to a motor, a battery coupled at the output to the propulsion branch, and an AC-DC converter coupled between an output of a generator and the propulsion branch.

A propulsion and non-propulsive electrical generation system for an aircraft having at least one turbomachine and at least two pairs of rotors, the rotors of the same pair of rotors being symmetrically opposite on the aircraft with respect to the same center of symmetry, at least four motors each driving a rotor, at least one generator coupled to a turbomachine, an even number of power lines and at most equal to the number of rotors, each power line having at least one propulsion branch coupled to a motor, a battery coupled at the output to the propulsion branch, and an AC-DC converter coupled between an output of a generator and the propulsion branch.

A method provides closed-loop control for an entire power supply system which has three supply levels each considered to be a separate regulatory unit and controlled independently of the other supply levels. An interface between two respective regulatory units is defined by control of the active power and reactive power transmitted between the two regulatory units. Appropriate control of the active power and reactive power transmitted between the regulatory units allows these regulatory units to be isolated from or connected to one another in terms of power. A power supply system is ideally regarded as a chain of separate regulatory units for supplying power. This allows efficient and safe operation and local control of a power supply system to which locally produced power is supplied, for example on different supply levels. In addition, a low number of data items to be interchanged between the supply levels is maintained.

A method provides closed-loop control for an entire power supply system which has three supply levels each considered to be a separate regulatory unit and controlled independently of the other supply levels. An interface between two respective regulatory units is defined by control of the active power and reactive power transmitted between the two regulatory units. Appropriate control of the active power and reactive power transmitted between the regulatory units allows these regulatory units to be isolated from or connected to one another in terms of power. A power supply system is ideally regarded as a chain of separate regulatory units for supplying power. This allows efficient and safe operation and local control of a power supply system to which locally produced power is supplied, for example on different supply levels. In addition, a low number of data items to be interchanged between the supply levels is maintained.

A coordinated multiple power management system provides an efficient and unique means of controlling the power usage of devices attached to a personal energy platform. Power control in an abundant power situation (i.e. commercial power is available) saves money. Power control in a constrained power situation (i.e. commercial power is unavailable e.g. “power failure”) provides more availability of needed computing services (for example, emergency activities, enable longer communication periods, longer video streaming, security monitoring, internet access and communications, or critical healthcare device usage etc.). The power supplied to the devices can be determined automatically and is under program control, which allows the complete management and distribution of power to any, and all, devices attached to the personal energy platform.

A coordinated multiple power management system provides an efficient and unique means of controlling the power usage of devices attached to a personal energy platform. Power control in an abundant power situation (i.e. commercial power is available) saves money. Power control in a constrained power situation (i.e. commercial power is unavailable e.g. “power failure”) provides more availability of needed computing services (for example, emergency activities, enable longer communication periods, longer video streaming, security monitoring, internet access and communications, or critical healthcare device usage etc.). The power supplied to the devices can be determined automatically and is under program control, which allows the complete management and distribution of power to any, and all, devices attached to the personal energy platform.

An electrical power or data system includes an electrical power or data supply cord and an intermediate power or data cord, a first electrical power or data outlet receptacle disposed between the supply cord and the intermediate cord, and a second electrical power or data outlet receptacle at a distal end of the intermediate cord. The first electrical power or data outlet is positionable below a work surface, while the second electrical power or data outlet is mountable to the work surface. At least one of the electrical cords may include a self-retracting cord section.

An electrical power or data system includes an electrical power or data supply cord and an intermediate power or data cord, a first electrical power or data outlet receptacle disposed between the supply cord and the intermediate cord, and a second electrical power or data outlet receptacle at a distal end of the intermediate cord. The first electrical power or data outlet is positionable below a work surface, while the second electrical power or data outlet is mountable to the work surface. At least one of the electrical cords may include a self-retracting cord section.

The invention relates to an energy supply system for a watercraft with a main energy converter that is configured for connection to an electrical system of the watercraft. According to invention, the main energy converter is connected to a DC busbar, and at least one inverter is connected to the DC busbar for supplying a consumer respectively associated with this inverter, and at least one electrical energy storage is connected to the DC busbar. Due to the common use of electrical components, among other things, a significant reduction of the installation space requirements of the energy supply system 100 is realizable for a watercraft.