摘要:
Methods of operating a wind turbine comprising a rotor with a plurality of blades, and one or more pitch mechanisms for rotating the blades around their rotational axes, a generator, and a system for varying a torque of the generator, and wherein each of the blades comprises one or more local aerodynamic actuators. The method comprises a sub-nominal zone of operation for wind speeds below a nominal wind speed and a supra-nominal zone of operation for wind speeds at or above the nominal wind speed. The sub-nominal zone of operation comprises a first operational range, a second operational range, and a third operational range. The method further comprises actuating the local aerodynamic actuators in the third operational range to increase the lift of the blade, and/or actuating the local aerodynamic actuators in the first operational range, to decrease the lift of the blade.
摘要:
The present disclosure relates to a method for fabrication of a conductor bar and to a use of a conductor tape with applied putty for the fabrication of a conductor bar. Described is a method for fabrication of a conductor bar with the following steps, applying a putty at one side of a conductor tape, applying a release foil at the other side of the putty opposed to the conductor tape, removing the release foil before applying the conductor tape to the narrow side of the conductor bar, providing a pressing mould with rounded edges at the inner side of the pressing mould, surrounding the conductor bar with putty and conductor tape with the pressing mould, and hot pressing the conductor bar with the pressing mould.
摘要:
The invention relates to a brush device (1) in an electrical machine for an electrical connection or signal connection. Disclosed is a brush device (1) for an electrical connection of an electric machine or rotary transformer, whereby the brush device (1) comprises interwoven filaments (2) for current and/or signal transmission between at least a rotary side and a stationary side.
摘要:
A method is disclosed for manufacturing a rotating part which belongs to a hydraulic machine of an installation for converting hydraulic energy into electrical or mechanical energy. This rotating part includes blades distributed about an axis of rotation of the rotating part and extending from a leading edge to a trailing edge. This method can include manufacturing, in steel, a first part of each blade, which defines the leading edge thereof, manufacturing a second part of the blade in a material other than steel and attaching this to the first part of the blade so as to form a trailing edge.
摘要:
In a first aspect, the invention provides a permanent magnet rotor for an electrical machine having a stator and a rotor and an air gap arranged between the rotor and the stator. The rotor has a rotor body configured for rotating around a central rotational axis and further comprises permanent magnets that are inserted in a magnetic material. The magnets have an inner end and an outer end, the outer end of the magnet being arranged in the proximity of the air gap at the circumference of the rotor delimiting the air gap, and at least a portion of the outer end of the permanent magnets is not covered by the magnetic material.
摘要:
In a first aspect, a method is provided for manufacturing a permanent magnet module for a generator by using a mould with a resin inlet and a heating system for heating the inside of the mould. The method comprises placing inside the mould a module base with one or more receptacles for receiving permanent magnets, and inserting permanent magnets in the receptacles of the module base. The method further comprises closing the mould having in its inside the module base with inserted permanent magnets, and introducing resin into the closed mould through the inlet of the mould. The method still further comprises causing the heating system to operate for at least partially curing the resin. In a second aspect, permanent magnet modules are provided manufactured by performing any of the previous methods of manufacturing a permanent magnet module.
摘要:
Electrical machine comprising a first item having a male portion and a second item having a female portion. The male and female portions have a shape adapted to each other such that the male portion can be fitted into the female portion. The male and/or female portion is formed as a stack of sheets comprising standard sheets and protruding sheets. The "male" standard sheets substantially fits into the female portion and the "male" protruding sheets are larger than the female portion such that, in use, said protruding sheets are deformed during insertion of the male portion into the female portion. The "female" standard sheets have an opening into which the male portion substantially fits, and the "female" protruding sheets have an opening smaller than the male portion such that, in use, said protruding sheets are deformed during insertion of the male portion into the opening of the female portion.
摘要:
The present disclosure relates to a measuring device for measuring vibrations of a rotor and to a method for measuring the vibrations of a rotor. Disclosed is a measuring device for measuring vibrations of a rotor of an electric machine comprising a guiding rod (6) with a plate (7) at one end of the guiding rod (6), the plate (7) to abut at the rotor in operation, an actuator (9) for inducing a shock to the rotor via the guiding rod (6) and via the plate (7), and a monitor device (10) for measuring the vibrations at the rotor caused by the induced shock.