47results about How to "Reduce delivery power" patented technology

There is provided a method of operating a wind power installation. Under first operating conditions in a normal operating mode the wind power installation delivers a first power to a connected electrical network. That first power is proportional to the wind speed. The wind power installation is controlled in such a way that upon the occurrence of a disturbance it remains on the connected electrical network and delivers to the connected electrical network a second power which is lower than the first power. Upon cessation of the disturbance and under the first operating conditions a third power is briefly delivered to the connected electrical network, the third power being significantly higher than the first power.

The invention relates to a delivery device (2) for a motor vehicle for delivering oil from an oil sump (3) to a lubricating oil circuit of an internal combustion engine (1), which delivery device hasas an oil pump (5) a double-stroke vane cell pump (28) having positive guidance of vanes (32). A direct drive (6) of the vane cell pump (28) via the internal combustion engine (1) is designed for a working point P2. An increased or reduced oil demand is compensated for by an electric drive (7) that can be connected. In this way, a compact and very small-dimensioned oil pump (5) can be employed.

Disclosed is an ignition transformer for a discharge lamp, comprising a transformer core. The material and the size of the transformer core are selected such that following the ignition by means of the ignition transformer, the Curie temperature of the material can be reached using a voltage drop above a secondary winding of the ignition transformer, thus leaving merely a residual inductance for the secondary winding. Also disclosed is a base for a discharge lamp, comprising such an ignition transformer. Preferably, at least some sections of the discharge vessel of the lamp protrude into the central hole of the ignition transformer in the base, resulting in a compact base with a discharge lamp.

The invention belongs to the field of power system automation, and provides a high-reliability self-energy-obtaining circuit based on an energy-obtaining current transformer with an iron core. The high-reliability self-energy-obtaining circuit comprises a specially-made energy-obtaining CT, a rectifying circuit unit, a short-circuit current bypass and energy-obtaining balance regulation circuit unit, an energy storage circuit unit, an overvoltage protection and energy-obtaining balance control circuit unit, a self-energy-obtaining circuit self-starting and storage battery control circuit unit,a DC / DC module power supply and the like. The overvoltage protection and energy-obtaining balance control circuit unit is configured to couple a primary system with a strong interference bypass at asecondary side when the system generates short-circuit faults or is stroke by lightening to prevent the energy-obtaining CT iron core from saturation; the energy-obtaining balance regulation circuit unit employs a dynamic energy-obtaining mode of supply change with demand to automatically regulate the self-obtaining power so as to achieve balance between supply and demand; and moreover, the self-energy-obtaining circuit self-starting and storage battery control circuit unit is configured to perform effectively power supply management.

The invention relates to a method for operating a fuel pump in order to guide fuel from the fuel container of an internal combustion engine, wherein the electric energy, which is in the form of pulses, is periodically guided to the fuel pump and the duration of the pulses is controlled according to the fuel required by the internal combustion engine. The frequency of the pulses is controlled in such a manner that, in the event of low pump capacity of the fuel pump, the frequency is controlled to a higher level than in the even of a high pump capacity.

The invention relates to a cement concrete pavement 3D printing equipment and a construction method, belonging to the technical field of pavement paving. The equipment includes vehicle-mounted system, batching system, control system, printing system and leveling system. Among them, the batching system is set on the vehicle-mounted system, the batching system is connected to the printing system, and the printing system is equipped with a control system. Through the printing system and the control system, the Concrete is laid on the road surface, and the printing system is equipped with a leveling system, which can level the road surface paved with concrete. The invention combines 3D printing technology with concrete pavement technology, uses a mechanical arm to replace the portal steel frame used by traditional 3D printing machines, realizes the three-dimensional movement of the machine, and installs the mechanical arm on the vehicle-mounted system, so that the machine can Moving around makes the printing area unrestricted, realizing large-scale, integrated and fast printing construction on the road.