Abstract: A rotational body, to a rotor and to a flywheel energy storage unit having such rotational bodies is disclosed and a method for the production of a rotational body, having a cylinder jacket at least partially wound using a fiber-reinforced composite. A cylinder axis includes open cylinder base surfaces, whereby the cylinder jacket, with its inside facing the axis of rotation and its outside oriented in the opposite direction, has a length parallel to the axis of rotation of more than twice the outer diameter of the rotational body, and it has a wall thickness that is less than 12.5% of the outer diameter. The fiber-reinforced composite of the cylinder jacket has a layered structure in the radial direction comprising helical layers of fibers which extend along the axis of rotation and whose orientation along the helical fiber angle is less than 35° relative to the axis of rotation.

Abstract: A combined power plant is disclosed for feeding energy into a non-local power network. The combined power plant includes at least one turbine power plant and at least one energy storage installation with one or more energy storage modules, whereby the turbine power plant is connected to the non-local power network in order to feed in power. A monitoring unit monitors the rotational speed of a turbine on the basis of a rotational speed-specific characteristic quantity, at least while the energy is being fed into the non-local power network. The energy storage installation is connected to the non-local power network separately or via the turbine power plant, whereby the monitoring unit is connected to a control unit of the appertaining energy storage installation in order to transmit a characteristic quantity signal based on the rotational speed-specific characteristic quantity to the control unit via a data connection.

Abstract: A combined electrical power plant is provided to supply power to a grid and a method to operate such a combined electrical power plant comprising a thermal power generation facility and an energy storage facility with a suitable energy storage capacity being able to supply additional electrical power to the grid and to receive and store electrical power from the thermal power generation facility or from the grid. Both facilities are electrically coupled to providing a combined power output to the grid and further comprise a plant controller to process the demand signal and to generate at least a first control signal and a second control signal from the demand signal, where the first control signal is a smoothened function of time of the demand signal resulting from a smoothening process executed by the plant controller taking into account operational characteristics of the thermal power generation facility.

Abstract: A combined power plant is disclosed for feeding energy into a non-local power network. The combined power plant includes at least one turbine power plant and at least one energy storage installation with one or more energy storage modules, whereby the turbine power plant is connected to the non-local power network in order to feed in power. A monitoring unit monitors the rotational speed of a turbine on the basis of a rotational speed-specific characteristic quantity, at least while the energy is being fed into the non-local power network. The energy storage installation is connected to the non-local power network separately or via the turbine power plant, whereby the monitoring unit is connected to a control unit of the appertaining energy storage installation in order to transmit a characteristic quantity signal based on the rotational speed-specific characteristic quantity to the control unit via a data connection.

Abstract: A combined electrical power plant is provided to supply power to a grid and a method to operate such a combined electrical power plant comprising a thermal power generation facility and an energy storage facility with a suitable energy storage capacity being able to supply additional electrical power to the grid and to receive and store electrical power from the thermal power generation facility or from the grid. Both facilities are electrically coupled to providing a combined power output to the grid and further comprise a plant controller to process the demand signal and to generate at least a first control signal and a second control signal from the demand signal, where the first control signal is a smoothened function of time of the demand signal resulting from a smoothening process executed by the plant controller taking into account operational characteristics of the thermal power generation facility.