An intelligent static transfer switch provides a primary voltage source to a destination facility via a primary power supply, monitoring the voltage level associated with the primary power supply. When the primary voltage drops below a threshold level (e.g., conditions normally associated with a…
A transfer time for transferring power from a first power source to a second power source, and an inrush current not be exceeded during the transfer are obtained. A phase difference between the first power source and the second power source is determined based on electrical measurements from the…
A system for executing a transfer from a first power source to a second power source is provided. The system includes one or more sensors configured to detect an electrical measurement associated with powering a load and a controller. The controller disconnects the first power source from the load…
A transfer time for transferring power from a first power source to a second power source, and an inrush current not be exceeded during the transfer are obtained. A phase difference between the first power source and the second power source is determined based on electrical measurements from the…
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 voltage source. The circuit comprises a…
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 transfer switch is configured to switch a source…
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 electrical power output; the switching circuit…
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 load () according to an electrical…
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 cabinet that houses a circuit breaker, a…
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 main power supply, using the other power…
A power supply switching system includes a switch controlling apparatus, at least two switch apparatuses, alternating current (AC) powers, and a power shelf. The power shelf includes at least two AC inputting ends. Each of the at least two switch apparatuses is electrically connected between one of…
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 contactor (1) is connected in series in a…
A dual power switching system selects a first power source or a second power source to supply power to a load coupled to an inductive device. The dual power switching system includes a first thyristor, a second thyristor, a third thyristor, a fourth thyristor, and a controller. The controller…
There is provided a quick automatic transfer switch device and an operating method thereof, including: a first power source input end; a second power source input end; output end; a first switch element coupled between the first power source input end and a third switch element; a second switch…
Examples of the disclosure include an automatic transfer switching system comprising a first input to receive phases of first power from a first source, a second input to receive phases of second power from a second source, a receptacle, a phase-selection interface (PSI) configured to receive the…
Disclosed herein is a static transfer switch and methods of operating the same. The static transfer switch includes a first switch between a first voltage source and a load, and a second switch between a second voltage source and the load. The first switch and the second switch are configured to…
A power source automatic transfer device is provided, including: a first and second power source input end; an auxiliary power supply unit whose electric energy is acquired from a first and second power source; a device output end connected to a load; and a power source switchover unit including a…
A dual power supply transfer switch (SSATS) for switching between a first power supply (S) and a second power supply (S) to supply power to a load is provided, includes: a solid-state switch (SS); a mechanical switch (CTR); and a compensation power module (AUX). In the case that the S fails in…
A method operable by a controller of a static transfer switch (STS) is provided. The STS includes first and second inputs selectively coupled with first and second power sources via first and second circuit breakers, respectively, an output coupled with a load, first and second bypass breakers…
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 time. An actuator, such as a motor…
A transfer switch for hybrid switching between a first power source and a second power source, the transfer switch includes a first switch and a second switch, the first and second switch connecting a load to a first power source and a second power source, respectively. The first switch includes at…
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 side via itself, and to be able to block a…
An uninterruptable power supply (UPS) is disclosed. The UPS includes an input configured to be coupled to a power source, a backup interface configured to be coupled to a backup power source, a backup interface configured to be coupled to a backup power source and to receive backup power from the…
According to an aspect of the present disclosure, there is provided a switching circuit including a main power supply circuit connected between power sources and a load, wherein the power sources include a first power source and a second power source, and the main power supply circuit includes a…
A system for turning on thyristors is presented, the system comprising: an input configured to be coupled to a power source; an output configured to be coupled to a load; a first branch coupled between the input and the output and including a first thyristor having a first threshold voltage; a…
A system includes a DC bus and an auxiliary power source coupled to the DC bus. The system further includes an energy storage device and a modular uninterruptible power supply (UPS) including a first uninterruptible power module (UPM) coupled to the DC bus and configured to provide power to an AC…
An excitation fuse device and a UPS battery circuit are provided including an excitation fuse and a voltage driving control module including a voltage detection circuit to detect a fuse device voltage and generate a voltage detection signal based on the fuse device voltage and a reference voltage…
A system and method for power source selection control. Multiple power sources of a power supply unit are each connected to a high power load via a plurality of switching circuitries each comprising at least one pair of transistors connected in a common source configuration and positioned between a…
The present disclosure generally relates to automatic smart jump start battery packs (broadly, reserve power supply systems) for machinery. In exemplary embodiments, a battery pack is configured (e.g., includes a microcontroller, etc.) to automatically detect when machinery (e.g., a water pumping…
This disclosure provides an energy storage apparatus, an energy storage apparatus control method, and a photovoltaic system. The energy storage apparatus includes: a plurality of battery clusters, a plurality of conversion units, a start unit, and a controller. The controller includes a plurality…