Responsive to indication that a predicted amount of solar or wind power from a power generating event will exceed a power storage capability of one or more power storage devices configured to receive the solar or wind power, controllers may command the one or more power storage devices to discharge energy to a power grid before the power generating event such that the power storage capability of the one or more power storage devices increases.

A charging station for charging electric vehicles and the charging station comprises a network connection point for exchanging electrical power with an electrical supply network, at least one charging terminal, in each case for charging an electric vehicle, and a control device for controlling the charging station, wherein the control device is set up to determine an equivalent storage capacity and to transmit it to a receiver outside the charging station, in particular to an operator of the electrical supply network, a network controller and/or a direct marketer, wherein the equivalent storage capacity describes a value which corresponds to a storage capacity of an equivalent electrical storage device which can absorb or emit as much energy as the charging station can absorb or emit by changing its absorbed or emitted power for a predetermined support period.

A charging station for charging electric vehicles and the charging station comprises a network connection point for exchanging electrical power with an electrical supply network, at least one charging terminal, in each case for charging an electric vehicle, and a control device for controlling the charging station, wherein the control device is set up to determine an equivalent storage capacity and to transmit it to a receiver outside the charging station, in particular to an operator of the electrical supply network, a network controller and/or a direct marketer, wherein the equivalent storage capacity describes a value which corresponds to a storage capacity of an equivalent electrical storage device which can absorb or emit as much energy as the charging station can absorb or emit by changing its absorbed or emitted power for a predetermined support period.

A power calculation apparatus calculating an amount of power suppliable to a power system by an energy source connectable, at a connection point, to the power system and capable of power generation and power storing, the power calculation apparatus includes: a microprocessor and a memory connected to the microprocessor, wherein the microprocessor is configured to perform: specifying a position of the connection point of the energy source in connection with the power system; acquiring a capacity information indicating a power generation capacity or a remaining storage capacity of the energy source; and calculating an amount of power suppliable by the energy source to the power system in an area within a predetermined range including the connection point, based on the capacity information and the position of the connection point.

Direct current fast charging systems and devices with grid tied energy storage systems. As an example, a multi-unit charging system may include first and second charging stations, each of the first and second charging stations comprising a respective charger configured to transfer energy to an electric vehicle and a respective energy storage system configured to store energy, and a distribution network configured to connect each of the first and second charging stations to an electrical grid.

Direct current fast charging systems and devices with grid tied energy storage systems. As an example, a multi-unit charging system may include first and second charging stations, each of the first and second charging stations comprising a respective charger configured to transfer energy to an electric vehicle and a respective energy storage system configured to store energy, and a distribution network configured to connect each of the first and second charging stations to an electrical grid.

Use of a charge-and-discharge spot can be promoted. A charge-and-discharge management system includes a setting controller that sets an incentive linked with a charge-and-discharge spot for each charge-and-discharge spot and a presentation controller that presents the incentive set for each charge-and-discharge spot to a user using an electric vehicle. The charge-and-discharge management system may further include an acquisition controller that connects the electric vehicle to a charge-and-discharge device installed in the charge-and-discharge spot and acquires connection spot information that is information of the charge-and-discharge spot that is a connection destination when charging and discharging is started, and a providing controller that provides an incentive set for the charge-and-discharge spot included in the connection spot information acquired by the acquisition controller when the charging and discharging of the electric vehicle is completed.

Improvements in computer-based energy asset management technologies are provided. An energy asset management system with a data summarization mechanism can perform computations, for example relating to controlling the assets, which may include electric vehicles (EVs), with fewer computing resources. Further, the system can perform computations on large datasets where such computations would have otherwise been impractical with conventional systems due to the size of the data. A large dataset relating to the energy asset management system is reduced using the summarization mechanism, and a computation model is trained using the reduced dataset. Energy assets in the system may be controlled using the trained computational model. Assets may include EVs, and controlling the EVs may be based on generated predictions relating to charging interactions. The predictions may be based on road traffic information and/or weather related information. Further, the computational model may include an optimizer for scheduling charging interactions of EVs.

An onboard DC charger for an electric vehicle, wherein the electric vehicle includes an electric machine and a power conversion device that is a drive circuit for the electric machine and a charging circuit for the on-board battery. The one or more electric machines of the vehicle are mounted to the body for providing locomotive energy, wherein the or each machine has a stator, a rotor mounted to the stator for rotation, and one or more windings; and a controller for operating in a first state and a second state wherein, in the first state, the controller allows current to be drawn from the DC energy source for energising at least one of the one or more windings such that the electric machine provides the locomotive energy and, in the second state, the controller controls the position of the rotor relative to the stator and allows at least one of the one or more windings to be energised to provide a charging current to the DC energy source.

A method for controlling an electrical consumer is provided. The electrical consumer is coupled to an electricity supply grid using a frequency converter. The electricity supply grid has a line voltage and is characterized by a nominal line voltage. The electricity supply grid is monitored for a grid fault in which the line voltage deviates from the nominal line voltage by at least a first differential voltage. When the grid fault occurs, the electrical consumer remains coupled to the electricity supply grid, and a power consumption of the electrical consumer is changed on the basis of the deviation of the line voltage from the nominal line voltage.