This uninterruptible power supply apparatus includes an uninterruptible power supply module, an input module, and a control module that is disposed in a left-right direction of the input module. The control module is configured such that at least arrangement positions of the thyristor unit and the control unit that controls power conversion of the uninterruptible power supply module are interchangeable in a left-right direction, in the housing.

The present disclosure relates to a power supply control method for a vehicle, a vehicle, a control unit, a computer-readable storage medium and a computer program product. The vehicle comprises an electrical equipment, a relay and a power interface, wherein the power interface is electrically coupled to the electrical equipment via the relay. The method comprises: determining whether the power interface is coupled to an external power source; determining whether a voltage of the external power source is within a predetermined range when the power interface is coupled to the external power source; and controlling the relay to be switched on in response to the voltage of the external power source being within the predetermined range.

This uninterruptible power supply device includes an input module provided with a plurality of conductor wires having a plate shape including at least a plurality of AC input wires, and an uninterruptible power supply module. In addition, the plurality of AC input wires each extend in an X direction in which the uninterruptible power supply module and the input module are adjacent to each other, and have AC input cable attachment portions in which an AC input cable is attached. The AC input cable attachment portions are disposed so as to be separated from each other in a Y direction, which is a direction in which a front side and a rear side of the input module face each other.

A backup battery system includes a charging-discharging module and a battery module. The charging-discharging module includes a first connector and a first engaging member. The battery module is detachably connected to the charging-discharging module and includes a second connector corresponding to the first connector and a second engaging member corresponding to the first engaging member. When the battery module is connected to the charging-discharging module, the first connector is joined with the second connector and the first engaging member is fixed to the second engaging member.

The present disclosure provides a grid forming vector current control system configured to emulate a virtual synchronous machine (VSM). The disclosed system comprises a droop control unit, a current control unit, a virtual admittance unit and a phase locked loop (PLL) unit. The virtual admittance unit and the PLL unit are configured to emulate an inertia of the VSM. A virtual current source is connected in parallel to the VSM.

A self-powered IED for a pole-mounted auto-recloser connected to an electric line includes a main control module and a lockout indication module. The main control module determines a fault in the electric line and trips the auto-recloser. During a permanent fault in the electric line, the auto-recloser is remained open, and the main control module activates a lockout state by generating a lockout set signal. The lockout indication module comprises a light source and super-capacitors. The super-capacitors provide stored charges to the light source when the lockout state is activated to provide notification throughout the lockout state.

The present invention provides a system utilizing a power supply auto-activate circuit for energizing power supply to activate various connected components. The present invention provides a system to enable automatic activation of the components inside an accommodating device.

A vehicle power supply system, being mounted on a vehicle, includes: a main power supply system including a main low-voltage power supply and a normal load; and a backup power supply system including a backup low-voltage power supply and an emergency important load and connected to the main power supply system. A backup power supply control device of the backup power supply system is configured to execute a backup low-voltage power supply state estimation processing, and output a signal indicating that the backup low-voltage power supply is in a state allowing supplying electric power for operating the emergency important load based on an estimation result of the backup low-voltage power supply state estimation processing, in a case in which the state of the vehicle does not satisfy a predetermined condition.

An apparatus includes: a memory and a first processor being configured to: control an operating frequency of a second processor connected to power supply devices that receive power from one or more power source systems to an operating frequency corresponding to a power value based on information on a number of power source systems and information on a number of uninterruptable power supplies connected to the power supply devices; and control, when the number of the power source systems is two or more and an uninterruptable power supply is connected to a power supply device in each of the power source systems, the operating frequency of the second processor to an operating frequency corresponding to a power value based on a number of power supply devices normally operating in a first power source system and a number of uninterruptable power supplies in a second power source system.

An apparatus includes: a memory and a first processor being configured to: control an operating frequency of a second processor connected to power supply devices that receive power from one or more power source systems to an operating frequency corresponding to a power value based on information on a number of power source systems and information on a number of uninterruptable power supplies connected to the power supply devices; and control, when the number of the power source systems is two or more and an uninterruptable power supply is connected to a power supply device in each of the power source systems, the operating frequency of the second processor to an operating frequency corresponding to a power value based on a number of power supply devices normally operating in a first power source system and a number of uninterruptable power supplies in a second power source system.