An electric vehicle (EV) charging system includes a number of output connections (e.g., cables). Each of the output connections is connected to at least one head, and each head can be connected concurrently to an EV. A controller can direct a charging current, delivered over a dedicated circuit from an electric power supply, to a first one of the output connections if a first EV is connected to a head connected to the first one of the output connections. Then, the charging current to the first one of the output connections can be stopped, switched to a second one of the output connections, and restarted if a second EV is connected to a head connected to the second one of the output connections.

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.

A battery charging management system includes a plurality of sockets combinable with a plurality of devices onto which a plurality of battery packs are mounted; a binding controller configured to receive state information of the plurality of battery packs from the plurality of devices, determine a priority of the plurality of devices to be allocated to the plurality of sockets according to a charging strategy selected based on the state information, and allocate one of the plurality of sockets to one of the plurality of devices or releasing the allocating; a charging controller configured to control charging of the plurality of battery packs of the plurality of devices electrically connected to a charging circuit based on the state information received by the binding controller; and a distributor configured to switch an electrical connection between the charging circuit and the plurality of battery packs.

Example implementations described herein are directed to managing the operation of a plurality of electric vehicles (EVs) for transportation service, power system operating reserve service and operation planning, which is utilized to determine whether to use each EV for transportation travel or power system operating reserve supply for a given time period and location. Such management allows for the increase of the total operation value by transportation travel and power system operation reserve supply.

An electric energy control device includes: a measuring device to measure an electric current; a voltage sensor to measure an electric voltage; and a power calculation unit which receives current information from the current sensor and voltage information from the voltage sensor, and is configured to calculate the electric power consumed at the power output of the electric meter. The device also includes a control member which receives information concerning the electric power consumed from the power calculation unit, calculating the difference between the electric power information item and a preceding value, if an absolute value of the difference being less than the threshold remaining idle and if an absolute value of the difference being greater than the threshold outputting a message containing a power value to a terminal for recharging an electrical storage battery. The recharging terminal being remote from the measuring and control members.

An example operation includes one or more of establishing a communication channel between a computing system associated with a plurality of available power sources and a transport comprising a rechargeable battery that is configured to power the transport, determining a value of charge power for the rechargeable battery, generating a request that identifies the value of charge power in a first field and identifies a power source in a second field from among a plurality of available power sources to source the charge power for the rechargeable battery, and transmitting the request from the transport to a computing system via the established communication channel.

A multimodal converter for use in electric vehicle charging stations for interfacing between at least one AC source and two DC sources (including the electric vehicle with onboard DC traction accumulator). The multimodal converter may also be applicable to other uses with a multitude of energy sources. For example, where the multimodal converter AC interface is for an electric motor, such as in a plug-in electric vehicle, an electric power tool, an electric water pump, a wind turbine, or the like, or interfacing with any DC sources such as an electrical battery apparatus, a solar panel array, a DC generator, or the like, whether for private, commercial or other use.

A power conversion module, a vehicle-mounted charger, and an electric vehicle may be used in the field of new energy vehicles. The power conversion module includes a power factor correction PFC module and a first direct current-direct current DC-DC converter. A first primary circuit of the first DC-DC converter has a first bridge arm, a second bridge arm, a third bridge arm, and a fourth bridge arm. A first switch is disposed between the first bridge arm and an inductor at an interface of the PFC module, and a second switch is disposed between the third bridge arm and another interface of the PFC module. When the first switch and the second switch are turned on, a secondary circuit of the first DC-DC converter may implement a function of a primary circuit of a second DC-DC converter; the second bridge arm and the fourth bridge arm may implement a function of a secondary circuit of the second DC-DC converter; and the first bridge arm, the third bridge arm, the inductor of the PFC module, and a capacitor of the PFC module may form an inverter module, so as to implement an inverse discharging function.

An electric vehicle charging system includes logic collocated with an electric service panel to monitor a total present electric current consumption value for all electric consumers below a point in the service panel; a first input to receive the present electric current consumption value from the logic collocated with the service panel, and to compare the present electric current consumption value with a maximum current capacity value for the service panel; a second input to receive electric current from the service panel; an output to supply electric charging power to at least one electric vehicle; and logic to set an electric charging current drawn from the service panel through the second input and provided to the electric vehicle charging output to a value less than a difference between the maximum current capacity for the service panel and a sum of the present electric current consumption value and the current consumption value of a largest expected electric consumer.