An electrical distribution system, for distributing electrical currents between an electrical distribution network and a domestic distribution installation, includes: a multi-source electrical switching unit allowing or preventing the circulation of electrical currents in two electrical conduction paths each including a plurality of electrical conductors, and an electrical connection device connected at the output of the electrical switching unit, the connection device being configured to prolong the two electrical conduction paths at the output of the switching unit. The electrical switching unit is configured to connect, on a first input, a first of the two electrical conduction paths to an electrical distribution network, the electrical switching unit being configured to connect, on its second input, the second of the two electrical conduction paths to an auxiliary electrical source. The connection device is configured to connect each electrical conduction path to one or more electrical loads at the output of the electrical switching unit. The electrical connection device includes an interconnection point in which the corresponding electrical conductors of each electrical conduction path are connected to one another, the multi-source electrical switching unit forming a single disconnection point capable of simultaneously disconnecting the electrical sources connected to the first input and to the second input from the rest of the electrical distribution network.

An electricity distribution system for a domestic installation including multiple electrical sources. The system includes a connecting device arranged for distributing an electric current in the installation, from sources including an electricity distribution network and at least one auxiliary electrical supply source, to at least one electricity consuming load, the connecting device including at least one linear segment, each linear segment including a plurality of electrical conductors adapted to route the electric current along an electrical conduction path. The system further includes a switching device principal configured for switching between two states which, respectively, allow or prevent the flow of electric current from the electricity distribution network to the connecting device, an auxiliary switching device for each auxiliary electrical supply source being configured for switching between two states which, respectively, allow or prevent the flow of electric current from the associated auxiliary electrical supply source to the connecting device. The system further includes at least one load switching device configured for switching between two states which, respectively, allow or prevent the flow of electric current from the connecting device to at least one electricity consuming load, the or each load switching device being electrically connected to the connecting device at an intermediate connection point between said first connection point and the or each second connection point.

A site management system has a site management device located on a fielded site, which has a controller unit integral with a power provision unit, and the power provision unit receives an input voltage via a conductor cable and delivers power to one or more receptacles. Additionally, the system has a plurality of remote devices communicatively coupled to the site management device over a wireless network and at least one off-site computing device communicatively coupled to the site management device. Further, the system has a processor on the controller unit that communicatively couples with at least one remote device, receives data indicative of a unique identifier from the wireless remote device, and determines whether the unique identifier correlates with a remote device of an individual who is permissively on the fielded site. In addition, the processor transits data indicative of the individual and data indicative of whether the individual is permissively on the fielded site to the off-site computing device or a site manager's remote device.

An electrical load system includes one or more electrical loads, a power transfer switch, and an electronic control system. The power transfer switch is coupled with and can provide power to one or more electrical loads from a first power source or a second power source. The electronic control system evaluates a source impedance of the first source and controls the power transfer switch in response to the source impedance of the first source indicating a fault condition of the first power source that would interrupt power from the first power source to the one or more electrical loads prior to the fault condition disrupting power from the first power source to the one or more electrical loads.

A method, apparatus, and computer program product for the control of electric vehicle (EV) charging enabling non-real-time remote monitoring and adjustments of electrical current consumed at EV charging stations, without causing an electrical grid to be. At least one EV charging station is first pre-instructed to provide an EV with a station current when a charging session for the EV is initiated at the EV charging station. The station current is ≤a maximum allowable current of the EV charging station. After the initiation of charging, an actual current consumed during the charging is monitored remotely in non-real time. Next, a ratio of the actual current consumed by the EV to the charging station is calculated and used to decide whether to change the current provided by the EV charging station. After that, EV charging station is instructed, on a non-real-time basis, to operate in accordance with the decision made.

A changeover device for selectively supplying power to at least one load from a grid or a bidirectional inverter includes an input having a grid neutral conductor connection and a grid phase conductor connection for connection to the grid. The changeover device further includes a first output having an inverter neutral conductor connection and an inverter phase conductor connection for connecting the bidirectional inverter, a second output having a load neutral conductor connection and a load phase conductor connection for connecting the load and a switching circuit, the actuator of which is connected to an actuator input of the changeover device. The switching circuit includes a first and a second normally closed contact and a normally open contact that are connected in an interconnection to the grid phase conductor connection, the inverter phase conductor connection, and the load phase conductor connection. An associated method is also disclosed.

Disclosed herein is a hybrid resonant capacitor circuit including a first capacitor configured to discharge resonant current to interrupt a load current to a switch in parallel with the hybrid resonant capacitor circuit, a second capacitor coupled in parallel with the first capacitor, wherein the second capacitor is configured to transfer energy stored in the second capacitor to the first capacitor after discharge of the resonant current from the first capacitor, and a current limiter coupled in series with the second capacitor. A static transfer switch including a thyristor switch and the hybrid resonant capacitor circuit is also disclosed herein, as is a method for facilitating multiple consecutive voltage source transfers between a first voltage source and a second voltage source powering a load, using the hybrid resonant capacitor circuit.

A method and a system for switching from grid-connected to grid-disconnected, and a power conversion system are provided. The method includes determining whether a power grid is abnormal based on a power grid parameter obtained when a PCS is grid-connected and operates in a current source mode, turning off a switching cabinet if the power grid is abnormal, switching from a current source mode to a voltage source mode, sending a command to instruct a grid-connected/grid-disconnected switch to switch from a grid-connected loop to a grid-disconnected loop, controlling an output parameter to smoothly transit from an abnormal parameter value recorded when the power grid is abnormal to a rated parameter value, and supplying power to a load according to the rated parameter value. In this way, seamless switching from grid-connected to grid-disconnected can be achieved, thereby ensuring stability of power supply.

A power generation system includes an extraction device configured to extract moisture from an ambient air surrounding the system, a first tank configured to store the moisture, an electrolyzer configured to receive the moisture and produce hydrogen by performing a chemical process, a second tank configured to store the hydrogen produced by the electrolyzer, a generator system configured to generate electrical power from the hydrogen, and a controller configured to control operation of the extraction device and the electrolyzer.

A generator system can include a first generator, a first controller operatively connected to the first generator to control a first generator voltage output, a second generator, and a second controller operatively connected to the second generator to control a second generator voltage output. The first generator and the second generator can be configured in a parallel generator configuration to share load power. The first controller and the second controller can be configured to provide foldback control. The first controller and the second controller can be configured to calibrate foldback to correct for current sharing imbalance between the first generator and the second generator.