Suspension eddy current damping optimizing method of wind power magnetic suspension cabin
A technology of eddy current damping and optimization method, which is applied to wind turbines, wind turbine control, engines, etc., can solve the problems of increasing suspension weight and suspension power consumption, and achieves the improvement of cabin suspension performance, real-time improvement, and burden reduction. Effect
Active Publication Date: 2019-01-04
QUFU NORMAL UNIV
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Problems solved by technology
However, the introduction of permanent magnets into the suspension system of the cabin will undoubtedly increase the suspension weight and suspension power consumption
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[0062] The present invention will be further described below with reference to the drawings and embodiments.
[0063] The present invention provides a method for optimizing the suspension eddy current damping of a wind magnetic levitation nacelle, which is characterized in that the eddy current damping is used to suppress the suspension fluctuation of the wind maglev nacelle 2, and a disc-shaped aluminum plate 8 is arranged on the lower side of the yaw stator core 3 to rotate with the nacelle The suspension winding 5 on the body 4 is a coordinated eddy current damping system; the core of the eddy current damping system is the eddy current damping force, which is generated by the axial movement of the suspension winding of the rotating body of the nacelle, and generates eddy currents on the eddy current aluminum plate. The generation is closely related to the cabin suspension current, the suspension air gap fluctuation speed and the thickness of the aluminum plate.
[0064] The desi...
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A wind power magnetic suspension cabin yaws to face wind under suspension, the yawing power consumption is greatly reduced, but due to random fluctuation of high-frequency wind speed, the problems that in the wind power magnetic suspension yawing wind facing process, the suspension air gap of the cabin greatly fluctuates, the power consumption of a suspension converter is high, and the fault rateof suspension equipment is high are easily caused. An eddy current damping system including suspension windings and annular aluminum plates is provided, the suspension power consumption and the burdenof the converter are effectively reduced, and suspension oscillation is passively stabilized. The eddy current damping aluminum plate is designed through the steps that firstly, eddy current dampingforce and cabin suspension force are given, and a cabin suspension dynamic model is established; a closed loop Lyapunov function is established based on cabin suspension mechanical energy, and cabin suspension current reference setting is designed; and cabin down force generated at rated wind speed serves as the working condition, the two performance indexes of the cabin suspension air gap fluctuation and the suspension power consumption are comprehensively considered, and optimization design of the thicknesses of the eddy current aluminum plates is carried out. The suspension air gap performance of the cabin can be effectively improved, and the control burden and the suspension power consumption of the suspension converter of the cabin are reduced.
Description
Technical field [0001] The invention discloses a method for optimizing the suspension eddy current damping of a wind magnetic levitation nacelle, which is applied to a system with large suspended matter mass, many external interferences, and the suspension air gap is very easy to oscillate. An effective optimization method for an eddy current damping system is proposed. Electrical engineering control field. Background technique [0002] The wind turbine yaw system is the core component of large and medium-sized wind turbines, which realizes that the wind turbine blades face the wind and obtain maximum wind energy. At present, the wind turbine yaw system adopts multi-motor and multi-gear drive mode to realize the nacelle's yaw and upwind. The heavier nacelle weight and multi-gear transmission mechanism make the nacelle's yaw power consumption high and high failure rate. The New Energy Research Institute of Qufu Normal University introduced magnetic levitation and disc motor techn...
Claims
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IPC IPC(8): F03D7/02G06F17/50
CPCF03D7/0204G06F30/17G06F2119/06Y02E10/72
Inventor 褚晓广蔡彬孔英衣学涛王强董同乐
Owner QUFU NORMAL UNIV