Abstract: The present disclosure relates to a cooling system, an electric motor and a wind-power electric generator set. The cooling system is applied to an electric motor; the electric motor includes a stator support and a rotor support; the stator support is dynamically sealingly connected to the rotor support to form a ventilation chamber arranged at an end of the electric motor in an axial direction; the cooling system includes a flow-confluence chamber, arranged in a circumferential direction of the stator support; an accommodating chamber, arranged in the circumferential direction of the stator support; a heat exchanger, arranged in the accommodating chamber or in the flow-confluence chamber; a circulating fan, arranged in the circumferential direction of the stator support and located at a side of the stator support in the axial direction.

Abstract: The present application provides a method and device for controlling a generator-side terminal voltage of a converter, and a controller of the converter. The method includes: determining an upper limit of the generator-side terminal voltage based on a present voltage value of a direct-current (DC) bus of the converter, where the generator-side terminal voltage is a voltage of an output terminal of a generator, and the output terminal is connected to the converter; determining an optimal value of the generator-side terminal voltage that minimizes a present value of a generator-side current, where the generator-side current is a current of the output terminal of the generator; setting a target value of the generator-side terminal voltage based on the upper limit and the optimal value of the generator-side terminal voltage. The target value includes a control reference value of the generator-side terminal voltage.

Abstract: A cabin cover and a wind turbine generator set are provided. The cabin cover includes: a cover, the cover including first plates, second plates, and at least one support beam, the first plate and the second plate being alternately arranged, at least one group of adjacent first plate and second plate being spaced apart from each other and being fitted to the support beam, and the first plates, the second plates, and the support beams jointly enclosing an accommodating chamber; and fasteners, two or more of fasteners being provided and disposed in the accommodating chamber, at least one fastener detachably connecting the first plate to the support beam, and at least one fastener detachably connecting the second plate to the support beam.

Abstract: Disclosed are a regulation method and a regulation device for a converter of a wind turbine generator in a wind power plant. The regulation method comprises: acquiring real-time voltage and current signals of a grid connection point (701); acquiring real-time state information of each wind turbine generator on the same electrical circuit in a wind power plant (702); and generating a unified regulation instruction on the basis of the acquired real-time voltage and current signals and the acquired real-time state information (703). The real-time state information comprises the total number of three-phase bridge arms of converters of currently running wind turbine generators on the same electrical circuit in the wind power plant, serial numbers that are dynamically allocated for the converters of the currently running wind turbine generators and their respective three-phase bridge arms, and the real-time power of each currently running wind turbine generator.

Abstract: A load sensor calibration method and apparatus, and a computer-readable storage medium are provided. The load sensor calibration method includes: acquiring operation data of a wind turbine generator set, wherein the operation data comprises data of the wind turbine generator set operating in a normal operating state or data of the wind turbine generator set operating under different predetermined pitch angle idling states; generating a calibration training set on the basis of the operation data; and calibrating a load sensor according to the calibration training set.

Abstract: An assembly method and a fixing device for an electric motor are provided. The assembly method includes: carrying out preparation, wherein a stator of the electric motor is segmented, in the circumferential direction, into at least two stator segments, and a rotor of the electric motor is segmented, in the circumferential direction, into at least two rotor segments; carrying out pre-assembly, wherein the stator segments and the rotor segments are coaxially fixed to fixing devices to form segment modules, and predetermined gaps are maintained radially between the stator segments and the rotor segments; carrying out adjustment, wherein at least two fixing devices are moved and adjusted such that the stator segment and the rotor segment of the adjacent segment modules are mutually attached and aligned with each other along segmental end faces in the circumferential direction; carrying out assembly; and carrying out dismounting, and dismounting the fixing devices.

Abstract: A cooling system and a wind power generating set. The cooling system comprises two cooling sub-systems thermally coupled to each other. Each cooling sub-system comprises: a first cooling circuit for cooling a first heat-generating component, a second cooling circuit for cooling a second heat-generating component, a third cooling circuit for cooling a third heat-generating component, a fourth cooling circuit for cooling a fourth heat-generating component, a pump station unit and a heat dissipation unit. The first cooling circuit and the fourth cooling circuit are connected in parallel to form a first branch, the second cooling circuit and the third cooling circuit are connected in parallel to form a second branch, and the first branch and the second branch are connected in parallel, and are connected to the pump station unit and the heat dissipation unit. The cooling system may achieve the fault-tolerant operation of two cooling sub-systems.

Abstract: The present application relates to an electric machine splitting or assembling method, an electric machine assembling method, and an electric machine splitting or assembling device including a sleeving device separating or coaxially sleeving first and second rotary bodies; the first disassembly device fixes the first rotary body and includes at least two first separable portions, and the first rotary body is split into petals in a circumferential direction by disassembling the first separable portions, or its respective petal segments are assembled in the circumferential direction by combining the first separable portions; and the second disassembly device is fixed to the second rotary body and includes at least two second separable portions, and the second rotary body is split into petals in the circumferential direction by disassembling the second separable portions, or its respective petal segments are assembled in the circumferential direction by combining the second separable portions.

Abstract: The present application provides a method and a system for controlling continuous low voltage ride-through and high voltage ride-through of a permanent magnet direct-driven wind turbine. The method includes: determining a transient time period during which the wind turbine is transitioned from a low voltage ride-through state to a high voltage ride-through state; controlling the wind turbine to provide, during the transient time period, a gradually increasing active current to the point of common coupling; and controlling the wind turbine to provide, during the transient time period, a reactive current to the point of common coupling according to an operation state of the wind turbine before the low voltage ride-through state.

Abstract: The present application discloses a heat exchange system and a motor. The heat exchange system includes: a first heat exchange unit disposed in a to-be-cooled area of the motor for heat exchange, the first heat exchange unit including a plurality of first heat exchange branches connected in parallel; a second heat exchange unit disposed outside the motor, and being connected to the first heat exchange unit through a pipeline assembly to form a closed heat exchange loop. Each first heat exchange branch is connected with a first heat exchanger, a first valve group, and a first pressure information component, and the opening and closing of the first valve group is controlled according to the first pressure information of the first pressure information component.

Abstract: A rotor support, a rotor, a motor, and a wind turbine are provided. The rotor support includes a magnetic yoke and a reinforcement portion provided on a first side surface of the magnetic yoke; a second side surface of the magnetic yoke is configured to operably dispose a magnet of a rotor; the reinforcement portion covers each magnetic circuit area, which can generate a partial magnetic circuit, of the first side surface; the sum of the radial thicknesses of the reinforcement portion and the magnetic yoke overlapped is greater than a preset thickness, and the radial thickness of the magnetic yoke is less than the preset thickness.

Abstract: A monopile foundation guiding device is provided. The monopile foundation guiding device includes at least one guiding unit; each of the at least one guiding unit includes a single driving unit, a transmission unit, and a clamping unit; the clamping unit includes at least two clamping arms, and a clamping space for clamping a monopile foundation is formed between the at least two clamping arms; the single driving unit transmits power to the transmission unit, and the at least two clamping arms are driven to operate synchronously by means of the transmission unit, so that the clamping unit is opened or closed.

Abstract: The present application relates to an electric machine splitting or assembling method, an electric machine assembling method, and an electric machine splitting or assembling device including a sleeving device separating or coaxially sleeving first and second rotary bodies; the first disassembly device fixes the first rotary body and includes at least two first separable portions, and the first rotary body is split into petals in a circumferential direction by disassembling the first separable portions, or its respective petal segments are assembled in the circumferential direction by combining the first separable portions; and the second disassembly device is fixed to the second rotary body and includes at least two second separable portions, and the second rotary body is split into petals in the circumferential direction by disassembling the second separable portions, or its respective petal segments are assembled in the circumferential direction by combining the second separable portions.

Abstract: A self-inspection method for a hydraulic control turning system of a generator rotor includes: establishing a length dimension relationship table among a plurality of hydraulic cylinders of the hydraulic control turning system; selecting a reference hydraulic cylinder, and acquiring a reference length dimension when the reference hydraulic cylinder is located at a target working position, the target working position is a position at which a turning pin corresponding to the reference hydraulic cylinder is inserted into an adapted hole; and performing a function inspection of a motion execution module in sequence by the plurality of the hydraulic cylinders, based on the reference length dimension and the length dimension relationship table.

Abstract: A transportation tooling structure, a split electric motor module with the transportation tooling structure, and a transportation method are provided. The transportation tooling structure comprises: a split base plate, a stator support and a rotor support, wherein the lower end of the stator support is fixedly supported on the upper surface of the split base plate, and the upper end of the stator support is fixedly supported on the side of a split stator close to the split base plate; and the upper end of the rotor support is fixedly supported on the side of an end of a split rotor away from the split stator, and the lower end of the rotor support is fixedly supported on the side of the split stator away from the split base plate.

Abstract: The present application provides a method and a system for controlling continuous high voltage ride-through and low voltage ride-through of a permanent magnet direct-driven wind turbine. The method includes: determining a transient time period during which the wind turbine is transitioned from a high voltage ride-through state to a low voltage ride-through state; controlling the wind turbine to provide, during the transient time period, a gradually increasing active current to the point of common coupling; and controlling the wind turbine to provide, during the transient time period, a reactive current to the point of common coupling according to an operation state of the wind turbine before the high voltage ride-through state.

Abstract: A cooling system and a wind power generating set. The cooling system comprises two cooling sub-systems thermally coupled to each other. Each cooling sub-system comprises: a first cooling circuit for cooling a first heat-generating component, a second cooling circuit for cooling a second heat-generating component, a third cooling circuit for cooling a third heat-generating component, a fourth cooling circuit for cooling a fourth heat-generating component, a pump station unit and a heat dissipation unit. The first cooling circuit and the fourth cooling circuit are connected in parallel to form a first branch, the second cooling circuit and the third cooling circuit are connected in parallel to form a second branch, and the first branch and the second branch are connected in parallel, and are connected to the pump station unit and the heat dissipation unit. The cooling system may achieve the fault-tolerant operation of two cooling sub-systems.

Abstract: A monopile foundation guiding device is provided. The monopile foundation guiding device includes at least one guiding unit; each of the at least one guiding unit includes a single driving unit, a transmission unit, and a clamping unit; the clamping unit includes at least two clamping arms, and a clamping space for clamping a monopile foundation is formed between the at least two clamping arms; the single driving unit transmits power to the transmission unit, and the at least two clamping arms are driven to operate synchronously by means of the transmission unit, so that the clamping unit is opened or closed.

Abstract: A rotor support, a rotor, a motor, and a wind turbine are provided. The rotor support includes a magnetic yoke and a reinforcement portion provided on a first side surface of the magnetic yoke; a second side surface of the magnetic yoke is configured to operably dispose a magnet of a rotor; the reinforcement portion covers each magnetic circuit area, which can generate a partial magnetic circuit, of the first side surface; the sum of the radial thicknesses of the reinforcement portion and the magnetic yoke overlapped is greater than a preset thickness, and the radial thickness of the magnetic yoke is less than the preset thickness.

Abstract: A transportation tooling structure, a split electric motor module with the transportation tooling structure, and a transportation method are provided. The transportation tooling structure comprises: a split base plate, a stator support and a rotor support, wherein the lower end of the stator support is fixedly supported on the upper surface of the split base plate, and the upper end of the stator support is fixedly supported on the side of a split stator close to the split base plate; and the upper end of the rotor support is fixedly supported on the side of an end of a split rotor away from the split stator, and the lower end of the rotor support is fixedly supported on the side of the split stator away from the split base plate.