The present device and method provide continuous power supply to consumers at a minimal cost. The present device combines electrical power from a plurality of direct and alternating current sources while working together with or separately from an external electrical power grid. Inside of the device, generation sources are connected via DC/DC and AC/DC converters to a DC bus, to which batteries are also connected via a charge control system. DC current is converted into AC current through reversible AC/DC converters according to the number of grid phases and an AC bus is connected to said converters, allowing for energy from an external grid to also be used for charging the batteries. The method of control is based on a cyclical program for selecting energy sources, said program being executed by a control unit and having dynamic parameter correction that takes into account present and projected energy production and consumption.

Energy packet switches (EPS) employing supercapacitors as storage provide aggregation and delivery of energy to users based on shared-capacitance in a digital power grid. The EPS aggregates energy from one or multiple energy sources, stores and dispatches the energy in discrete amounts as energy packets to one or multiple users. The payload of the energy packet is adjusted by the voltages of the supercapacitors which are used as energy containers for both the EPS and the users. The EPS has a control plane where data transmitted is used to control the operation of the EPS, and a power plane to receive and transmit energy between ports. The power and data planes work in parallel and with a parallel data network. Control and management of the EPS are based on a request-grant transport protocol. The data network is used to receive energy requests and grants, and a granting scheme is used to select which loads are granted energy. By sending addresses of granted loads on the data network and energy on the energy grid, energy is delivered to addressed destinations.

Systems and methods for operating an electric energy storage system are described. The systems and methods include ways of coupling electric energy storage cell stacks to an electric conductor or bus. The coupling is performed to reduce current flow through contactors and to increase a life span of the contactors.

A battery cell having first cell connectors, a galvanic cell and a first switching unit electrically coupled to the first cell connectors and the galvanic cell for electrically coupling the galvanic cell to the first cell connectors depending on a switching state of the first switching unit. The battery cell has second cell connectors electrically separated from the first cell connectors and a second switching unit electrically coupled to the second cell connectors and the galvanic cell for electrically coupling the galvanic cell to the second cell connectors depending on a switching state of the second switching unit.

A microgrid control system that can govern power provided to a load from various power sources. The microgrid control system can determine apportionment of power between the various sources based on characteristic power features of the various sources.

To join two sources in parallel, the second source output is lowered and then raised until two diodes providing an auxiliary path are passing current. This can reduce current spikes. Alternatively, the diodes can reversed, the voltage raised, and the lowered until diose are passing current.

An electric power distribution system includes a first path through which electric power is supplied from a DC/DC converter to a driven load to be driven in a load group; a second path connected in parallel with the first path and through which electric power is supplied from the battery to the driven load; a third path connected in series with the second path and connecting the DC/DC converter and the battery; a first switching circuit provided in the third path and switched to either ON state or OFF state; and a control unit switching the first switching circuit to either the ON state or the OFF state based on travel route information of a navigation system. The control unit switches the first switching circuit to the ON state according to a peak current of a load current of the driven load derived from the travel route information.

To join two sources in parallel, the second source output is lowered and then raised until two diodes providing an auxiliary path are passing current. This can reduce current spikes. Alternatively, the diodes can reversed, the voltage raised, and the lowered until diose are passing current.

Technology to dynamically share system power among charging ports of a multiport power delivery (PD) system is described. In one embodiment, a multiport PD system includes a master controller associated with a master port, and one or more slave controllers associated with one or more slave ports. The master controller determines a port connection status of a set of multiple ports. The port connection status indicates that multiple devices are connected. The master controller determines a power requirement of each of the devices. The master controller dynamically allocates a system power between each of the ports, independent of a connection sequence of the devices.

Technology to dynamically share system power among charging ports of a multiport power delivery (PD) system is described. In one embodiment, a multiport PD system includes a master controller associated with a master port, and one or more slave controllers associated with one or more slave ports. The master controller determines a port connection status of a set of multiple ports. The port connection status indicates that multiple devices are connected. The master controller determines a power requirement of each of the devices. The master controller dynamically allocates a system power between each of the ports, independent of a connection sequence of the devices.