摘要:
An inductor 1 for connecting a wind turbine generator to the electricity grid is mounted within a housing 2, and the coils of the inductor 1 are cooled by means of cooling plates 3 located within the coils, and in which are formed tubular conduits. Coolant liquid is supplied to the conduits through supply pipes 7 which are connected to the conduits by means of connectors 8 mounted underneath the housing 2 , such that any coolant liquid which escapes from the connectors 8 falls under gravity into a drip tray 10 arranged below the housing 2. Corresponding connectors are provided underneath the housing for connecting the conduits to outflow pipes. A sensor 11 within the drip tray 10 detects the presence of any coolant liquid which has leaked from the connectors 8 and, in response, generates an alarm signal which is transmitted to control circuitry for disconnecting the inductor 1 and shutting down the wind turbine generator.
摘要:
A power generation sailing ship (1) has a sail (2) provided on a deck, a water turbine (3) connected to a front end of a shaft passing through a bow part outer hull and extending forward, a power generator (4) disposed in a front body of the sailing ship (1) and connected to a rear end of the shaft, and an energy storage device (6) for directly storing electric energy generated by the power generator (4) or converting the electric energy into energy of a substance and storing the substance.
摘要:
A one-way clutch includes: an inner ring; an outer ring forming a plurality of wedge-shaped spaces together with the inner ring; and a plurality of rollers respectively disposed in the wedge-shaped spaces, and integrally rotatably connects an output shaft of a speed-up gear and an input shaft of a power generator to each other by engagement of the rollers with an outer circumferential surface of the inner ring and an inner circumferential surface of the outer ring, and breaks the connection by releasing the engagement. A relationship of 1.1
摘要:
A wind turbine generator, or other energy extraction device, has a hydraulic circuit comprising a hydraulic pump driven by a rotating shaft and a hydraulic motor driving an electricity generator. When the electricity generator is switched off, it executes one or more pumping cycles to pressurise the high pressure manifold and therefore recover angular kinetic energy from the electricity generator rotor which can later be used to reaccelerate the electricity generator rotor to the correct operating speed for an electricity grid. Overall energy efficiency is increased and the minimum operating high pressure manifold pressure may be reduced as a result.
摘要:
A method is provided for in-situ resurfacing of a main rotor shaft 24 of a wind turbine 10, wherein in an operational state, the main rotor shaft 24 is coupled at a first end to a rotor hub 20 and at the opposite second end to a gearbox 26 or directly to a generator within a nacelle 16. The method includes uncoupling the rotor shaft 24 from the gearbox 16 or generator so as to expose an end face 40 of the second end of the rotor shaft 24. A fixture 42 is attached to the exposed end face 40 concentric with the rotational axis of the rotor shaft 24. A lathe system 50 in then attached to the fixture 42. The rotor shaft surface adjacent to the exposed end 40 is machined with the lathe system 50 such that the resurfaced portion of the rotor shaft 24 surface is brought to a round state concentric with the rotational axis of the rotor shaft 24. The method is conducted within the nacelle 16 with the first end of the rotor shaft 24 remaining coupled to the rotor 18.
摘要:
The invention concerns a direct drive or directly driven generator (2) for a wind turbine (1) comprising a stator (17) having at least one stator element (33) for the power generation and a rotor (16) pivotable around a centre axis (A) of the generator (2) and having at least one rotor element (25) for the power generation, the generator (2) having an air gap (34) between the stator element (33) and the rotor element (25), wherein the stator (17) comprises a front and a rear ring-shaped supporting element (26, 27) and stator segments (28) being attached to the front and the rear ring-shaped supporting elements (26, 27) of the stator (17), wherein the junctions (50, 51) between the front and the rear ring-shaped supporting elements (26, 27) of the stator (17) and the stator segments (28) are located substantially at a radius (R1) in relation to the centre axis (A) of the generator (2) which is smaller than the radius (R2) of the air gap (34) between the stator element (33) and the rotor element (25). Furthermore the invention concerns a wind turbine (1) comprising such a direct drive generator (2).
摘要:
A wind turbine 100 having an attenuating unit 130 is presented. One embodiment of the wind turbine 100 includes a tower 102 and a power unit 104 disposed at a first end of the tower. The wind turbine 100 further includes the attenuating unit 130 that is operatively coupled to at least one of the tower 102 and the power unit 104 and configured to attenuate at least the portion of the vibrational bending waves having a frequency above a threshold frequency to reduce the tonal noise of the wind turbine 100.
摘要:
This invention relates to vertical axis turbines particularly ones which are suitable for use in swirling conditions. The vertical turbine (10) may have first and second rotors (13,14) mounted about the axis for contra rotation and a generator (14) located between the rotors for generating electricity in response to rotation of the rotors characterised in that one rotor is a substantial mirror image of the other.
摘要:
A wind turbine power generating apparatus includes: a nacelle supported on a tower; a rotor including a blade for receiving wind power, the rotor being configured to rotate upon receiving wind at the blade; a rotor shaft coupled to the rotor and supported rotatably on the nacelle; a generator which generates electric power from rotational force of the rotor shaft; and at least two rigidity-enhancing parts disposed on an inner circumferential surface or an outer circumferential surface of at least one of the rotor shaft or the tower, at an interval which is set so as to correspond to a frequency of oscillation caused during operation of the generator, or oscillation caused during operation of a drivetrain for transmitting the rotational force of the rotor shaft to the generator in a case where the drivetrain is provided, arranged in a propagating direction of the oscillation.
摘要:
An example a ram air turbine assembly (RAT) (10) is mounted to an airframe and provides both electric power and hydraulic pressure. A turbine (14) drives a drive shaft (36) about an axis transverse to rotation of the turbine. The drive shaft in turn drives both a generator (18) and a hydraulic pump (20) at a common speed.