An uninterruptible power supply circuit configured to, in a first operating mode, supply power to a second AC electrical network from a first AC electrical network; and, in a second operating mode, supply power to the second AC electrical network from a DC...

A power distribution apparatus to control transfer time and inrush factor when switching between power sources is disclosed. The power distribution apparatus includes first and second power sources configured to provide electrical power to a load. A transf...

The present teachings relate to an electrical device comprising: a first electrical power input; a second electrical power input; an electrical power output; a switching circuit operable to route electrical power from the electrical power inputs to the ele...

The problem to be overcome by the present disclosure is to reduce waste of an electrical storage unit. A backup power supply system () includes an electrical storage unit () and a control unit (). The electrical storage unit () supplies electric power to a...

Systems and apparatuses for access-controlled electrical docking stations that automatically switch power to an electrical system between generator power and utility power are disclosed herein. An illustrative electrical docking station can include a cabin...

A method and a device for power supply switching in an electric power system include providing an electric power system having two power supplies, each connected to a bus through an incoming line, using the power supply currently supplying power as the mai...

A power supply system and a control method are provided, where the power supply system includes: an active power contactor (1), a standby power contactor (2), an auxiliary power contactor (3), a control switch (4), and a controller (7). The active power co...

Systems for method for a semiconductor-based DC transfer switch. The semiconductor-based DC transfer switch uses two individual circuit breakers that are mechanically interlocked in such a way that only one of the two circuit breakers can be closed at any ...

A power feed control device includes a voltage conversion unit performs a conversion operation of increasing or decreasing an input voltage based on power from a power storage unit. An element unit is configured to allow a current to flow to a power path s...