Abstract: A stator used for a motor, the motor and a ventilation cooling method for the motor. The stator includes concentrated windings, and at least two wedge blocks are arranged at the gaps between the adjacent concentrated windings. The at least two wedge blocks are distributed on the concentrated windings in a staggered manner to form a first ventilation path. Therefore, the concentrated windings can be cooled effectively, the concentrated windings are effectively constrained in the circumferential direction by means of the at least two wedge blocks, the service life of the motor is further prolonged, and the reliability of the motor is improved.

Abstract: A retaining structure-based heat transfer and dissipation system and a wind generator set are provided. The heat transfer and dissipation system includes a envelop enclosure and power transmission cables that are laid along the vertical direction of the inner wall of the envelop enclosure. The power transmission cables are laid in a shady surface region of the envelop enclosure. The system effectively lowers the surface temperature of the power transmission cables in the envelop enclosure, prolongs the service life of the power transmission cables, and ensures the operation safety of power transmission. The over-temperature problem of the power transmission cables in a tower drum of the wind generator set in a high-temperature natural geographical environment is resolved in a “green” and “zero-energy consumption” manner, and the system safety of power transmission is improved.

Abstract: A wind power generator and stator iron core thereof, and stator iron core module; the iron core module (4) has an overall dimension consistent with a principle of the number of slots per pole per phase q=1; the iron core module (4) is provided with two three-phase winding units therein, an electrical angle formed by the two three-phase winding units is 30 degrees. The method of arranging winding in the stator iron core module (4) is changed to effectively reduce fifth and seventh winding harmonic magnetomotive forces.

Abstract: Provided are a method and a system for controlling wind turbine shutdown. The method includes: obtaining, according to a preset sampling period, a grid voltage for a wind turbine, and sending the obtained grid voltage to an converter controller; determining, by the converter controller and based on the grid voltage, an operating condition of a power grid is power outage of power grid; sending, in a case that the power outage of power grid is determined, a signal indicating power outage of power grid to a main controller of a main control system of the wind turbine; and controlling, by the main controller in a case that the signal indicating power outage of power grid is received, a pitch system to perform a variable-rate feathering.

Abstract: An enclosure having power transmission conductors laid in an oriented manner and a laying method. The method includes the following steps: acquiring changing situations of a surface heat transfer coefficient of an outer surface, in contact with a windward side incoming flow, of a shady side of the enclosure according to airflow parameters outside the enclosure; determining a target laying position according to an inside position, corresponding to a highest surface heat transfer coefficient, of the shady side; and laying the power transmission conductor at the target laying position.

Abstract: A wind power generator system includes: a generator including a generator cavity; a separation device configured to perform multi-phase flow separation on an upwind direction flow and including an air inlet configured to introduce the upwind direction flow and an air outlet in communication with the generator cavity; and an exhaust fan in communication with the generator cavity and configured to exhaust hot air flow in the generator cavity. A fluid transfer device includes: a power equipment including an overheated cavity; a separation device configured to perform multi-phase flow separation on an upwind direction flow and including an air inlet and an air outlet; and an exhaust fan. With the wind power generator system and the fluid transfer device, the overheated cavity can be cooled by using air in the natural environment and the overheated cavity is prevented from being damaged.

Abstract: A flare-type tension leg floating wind turbine foundation is provided, which includes a top support platform configured to support a tower frame, a blade and a wind turbine generator set; a bottom support structure connected to a plurality of tension legs; at least three hollow upright columns connected between the top support platform and the bottom support structure and arranged around a vertical center line of the floating wind turbine foundation, each of the at least three upright columns being inclined outward from a lower end to an upper end with respect to the vertical center line of the floating wind turbine foundation; and a ballast adjusting system provided in the upright columns and/or the bottom support structure.

Abstract: A permanent-magnet direct-drive wind power generator, a system and a stator thereof are provided. The stator includes a stator support, a stator iron core arranged around an outer peripheral wall of the stator support and a blade side tooth pressing plate arranged on an axial end face at a blade side of the stator iron core. At least one first air hole is provided in the outer peripheral wall of the stator support, and at least one second air hole is provided in the blade side tooth pressing plate, and further includes at least one air flow passage via which the first air hole and the second air hole are in communication with each other, and the air flow passage passes through the interior of the stator iron core. The stator can introduce air flow inside the stator support to an axial end face of the stator iron core.

Abstract: An enclosure having power transmission conductors laid in an oriented manner and a laying method. The method includes the following steps: acquiring changing situations of a surface heat transfer coefficient of an outer surface, in contact with a windward side incoming flow, of a shady side of the enclosure according to airflow parameters outside the enclosure; determining a target laying position according to an inside position, corresponding to a highest surface heat transfer coefficient, of the shady side; and laying the power transmission conductor at the target laying position.

Abstract: A stator of a permanent magnet direct-drive wind power generator includes a stator support, a stator iron core, a blade side tooth pressing plate and a blade side surrounding plate. At least one comb tooth air inlet hole is provided on a side close to the rotor of the blade side surrounding plate, the comb tooth air inlet hole and the second air hole are connected respectively via an air guide pipe. A first spiral comb tooth mechanism is provided on a side, close to the rotor sealing ring, of the blade side surrounding plate, the first spiral comb tooth mechanism is in communication with the comb tooth air inlet hole. The first spiral comb tooth mechanism has first spiral comb teeth protruding into an annular gap formed by the blade side surrounding plate and the rotor sealing ring for generating an airflow with spiral motion.

Abstract: A stator of a permanent magnet direct-drive wind power generator includes a stator support, a stator iron core, a blade side tooth pressing plate and a blade side surrounding plate. At least one comb tooth air inlet hole is provided on a side close to the rotor of the blade side surrounding plate, the comb tooth air inlet hole and the second air hole are connected respectively via an air guide pipe. A first spiral comb tooth mechanism is provided on a side, close to the rotor sealing ring, of the blade side surrounding plate, the first spiral comb tooth mechanism is in communication with the comb tooth air inlet hole. The first spiral comb tooth mechanism has first spiral comb teeth protruding into an annular gap formed by the blade side surrounding plate and the rotor sealing ring for generating an airflow with spiral motion.

Abstract: A lightning protection device for a wind turbine generator system includes at least a blade arrester, a down lead of a blade connected to the blade arrester, a lightning-proof element of a pitch bearing, a lightning-proof element of a rotor bearing. The lightning-proof element of the pitch bearing is arranged at the blade root, with one end connected to the down lead of blade and the other end connected to the lightning-proof element of the rotor bearing. The lightning protection device forms a lightning current conducting path passing through a cavity of the pitch bearing, a hollow of a rotor shaft and a cavity of the rotor bearing. A wind turbine generator system having the above mentioned lightning protection device is provided.

Abstract: A movement inhibiting apparatus for a floating offshore wind turbine and a floating base with the apparatus. The movement inhibiting apparatus for the floating offshore wind turbine comprises at least one layer of an annular shake-reducing panel placed horizontally and surrounding the floating base. A plurality of shake-reducing fins is further arranged on the shake-reducing panel. The plurality of shake-reducing fins comprises a first set of shake-reducing fins arranged on one side of the shake-reducing panel and the shake-reducing fins of the first set are spaced apart vertically around the floating base. The movement inhibiting apparatus for the floating offshore wind turbine can effectively inhibit the movement of the floating wind turbine and is of low cost.

Abstract: A lightning protection device for a wind turbine generator system includes at least a blade arrester, a down lead of a blade connected to the blade arrester, a lightning-proof element of a pitch bearing, a lightning-proof element of a rotor bearing. The lightning-proof element of the pitch bearing is arranged at the blade root, with one end connected to the down lead of blade and the other end connected to the lightning-proof element of the rotor bearing. The lightning protection device forms a lightning current conducting path passing through a cavity of the pitch bearing, a hollow of a rotor shaft and a cavity of the rotor bearing. A wind turbine generator system having the above mentioned lightning protection device is provided.