A reconfigurable power circuit (400) includes a single one-way DC to DC power converter (220, 221). The reconfigurable power circuit is configurable by a digital data processor as one of three different power channels (230, 232, and 234). Power channel (230) provides output power conversion. Power channel (232) provides input power conversion. Power channel (234) provides bi-directional power exchange without power conversion.

A power transmitting apparatus includes: a converter which converts an input power into an AC power with a predetermined frequency; and a first code modulator which code-modulates at least part of the AC power with a first modulation code to generate a first code-modulated power.

A distributed power network includes a power bus infrastructure distributed over a region with node points provided to interface with controllable power nodes. Each power node can be connected to an external power device such as a DC power source, a DC power load, or a rechargeable DC battery. The power nodes form a communication network and cooperate with each other to receive input power from DC power sources and or rechargeable DC batteries connected to the power bus infrastructure and distribute the power received therefrom to the power bus infrastructure for distribution to the DC power loads and to rechargeable DC batteries.

A distributed power network includes a power bus infrastructure distributed over a region with node points provided to interface with controllable power nodes. Each power node can be connected to an external power device such as a DC power source, a DC power load, or a rechargeable DC battery. The power nodes form a communication network and cooperate with each other to receive input power from DC power sources and or rechargeable DC batteries connected to the power bus infrastructure and distribute the power received therefrom to the power bus infrastructure for distribution to the DC power loads and to rechargeable DC batteries.

A power supply system having a plurality of power systems is provided with a power output section in each of the power systems, an electrical load in each of the power systems, operating from power supplied by the power output section, main paths that connect the power output sections of adjacent ones of the power systems, an inter-system switch that establishes a conducting condition between the adjacent power systems by being turned on and establishes a disconnected condition between the adjacent power systems by being turned off, and an intra-system switch in each of the power systems, which is disposed on the main path between the power output section and the inter-system switch, and which establishes a conducting condition between the power output section and the electrical load by being turned on and establishes a disconnected condition between the power output section and the electrical load by being turned off.

A system for controlling a bipolar DC power includes a positive conductor, a neutral conductor and negative conductor. A positive pole-to-neutral voltage is a voltage between the positive conductor and the neutral conductor and a negative pole-to-neutral voltage is a voltage between the negative conductor and the neutral conductor. The system comprises control means for controlling the positive pole-to-neutral voltage and the negative pole-to-neutral voltage. The control means includes a first voltage converter configured to control a sum or difference of the positive pole-to-neutral voltage and the negative pole-to-neutral voltage, respectively as a function of the sum or difference of the positive output current and negative output current, and a second voltage converter.

The invention relates to an on-board network device for supplying at least two electrical loads with an on-board network voltage in a motor vehicle, wherein the on-board network device has a connection device for receiving the on-board network voltage from a voltage source and a first on-board network branch for connecting one or some of the loads and for forwarding the on-board network voltage to each connected load. A second on-board network branch is provided for connecting each remaining load and for forwarding the on-board network voltage to each remaining load and that the connecting device is connected to both the first on-board network branch and the second on-board network branch via at least one switching element and that a control device is configured to electrically connect the connection device in an alternating manner to the first and second on-board network branches by switching the at least one switching element.

An electronic device having a universal serial bus (USB) power delivery function includes a connector, an electrostatic discharge (ESD) protection circuit, a power reception notification circuit, and a control circuit. The connector is coupled to a USB host. The connector includes a configuration channel (CC) pin. The power reception notification circuit is configured to turn on, in response to an enable signal, a pull-down path of a pull-down circuit of the ESD protection circuit. The configuration channel pin generates a pull-down voltage through the pull-down path of the pull-down circuit when the pull-down path is turned on. The control circuit is configured to send the enable signal to the power reception notification circuit when a trigger signal that meets a power reception condition is detected. The control circuit controls the connector to draw power from the USB host when the pull-down voltage of the connector is greater than a pull-down threshold.

A multi-voltage level direct current grid system and a control protection method, the direct current grid system comprising: at least two direct current buses; at least one direct current transformer, one end of which is connected to a first direct current bus while another end is connected to a second direct current bus or a lead-out wire, which may achieve direct current voltage conversion; and at least one lead-out wire current limiter, one end of the lead-out wire current limiter being connected to the second direct current bus while another end is connected to the lead-out wire; the lead-out wire current limiter comprises a first current-limiting unit, and the first current limiting unit comprises a group of direct current switches, as well as a first bypass switch and a first current-limiting resistor unit that are connected in parallel.

A system for supplying electrical energy to at least one electrical load of an aircraft, this system including a main source of electrical energy connected to at least one electrical load through an electrical network, the system including a control device connected to the main source of electrical energy and configured to deliver a variable voltage level on the electrical network based on a predetermined voltage variation law depending on at least one parameter characterizing the altitude of the aircraft and according to the Paschen law with a predefined margin.