The system (1) has a control unit (13) for controlling an intake (En) of energy from or output (Ep) of the energy to a non-local power grid (5) and local power grids (61, 62) according to stationary and non-stationary control and system tasks (LRS, NLRS). ...

The module (1) has a vacuum module (4) for producing minimum vacuum, and a cooling module (5) for removing internal thermal loads during operation of a flywheel module (3). A module control system (6) is designed to suitably control the modules in a module...

The local control units (41-1-43-1) controls energy storage installations (41-43) for stationary control and system tasks (LRS) for local power grids (61-64). A central control unit (2) is connected to local control units by communication network (3), for ...

The system (1) has a master module (2M) comprising an interface (4M) for receiving external control instructions (ESB) with respect to localized and non-localized control- and system objects (ORS, NORS). A master control unit (7M) performs the control inst...

A first voltage regulator (13) determines reference voltage and actual voltage (U) of intermediate circuit capacitor and desired current for supply inverter (3), so that supply inverter is controlled accordingly. A speed controller (15) determines referenc...

Systems and methods for controlling an inertia of a synchronous condenser (105) are described. An example system (100) may include a motor (110), bidirectional power source (115), and at least one control device (120). The motor (110) may be configured to ...

The arrangement has an electrical drive machine (2) which delivers mechanical power to a working system (1). The working system receives or delivers mechanical power or mechanical energy. Another electrical drive machine is provided which delivers mechanic...

An uninterruptible power supply system (44) has standby and backup modes and can change to backup mode upon detection of a grid fault. In both modes an alternator (14) rotates at synchronous speed so that backup mode capability is ready. An energy storage ...

The device has an electrical machine operable as a generator or motor. The machine has a flywheel coupled to the rotor via a variable ratio coupling and a control arrangement that holds the revolution rate of the machine acting as a generator with kinetic ...