Wind power magnetic suspension yaw motor control method based on model predictive control

A technology of model predictive control and yaw motor, which is applied in the direction of motor generator control, electronic commutation motor control, control generator, etc., and can solve the problems of few researches on maglev yaw motor system

Active Publication Date: 2018-06-19
山东省华礼海洋科技有限公司
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  • Wind power magnetic suspension yaw motor control method based on model predictive control
  • Wind power magnetic suspension yaw motor control method based on model predictive control
  • Wind power magnetic suspension yaw motor control method based on model predictive control

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[0103] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0104] Such as figure 1 , Figure 4As shown, the present invention is used for a wind electromagnetic levitation yaw motor, which is a hidden pole disc synchronous motor, including a stator 1, a rotor 2, a disc 3, a tower 4, a guide bearing 5, and a suspension frame 6 , load platform 7, air gap sensor 8. The stator 1 and the rotor 2 are placed relatively concentrically; the stator 1 is fixed to the disk 3, and the disk 3 is socketed on the tower 4 and fixed to the tower 4; the rotor 2 is fixed to the suspension frame 6; the suspension frame 6 is also connected to the load platform 7 fixed; the guide bearing 5 is fixed to the load platform 7, and fixed on the center of the load platform 7, and fixed to the tower 4; the load platform 7 is fixed to the nacelle of the wind turbine; the air gap sensor 8 is fixed to the rotor 2; the rotor 2, suspended The frame ...

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Abstract

The invention relates to a wind power magnetic suspension yaw motor control method based on model predictive control and belongs to the technical field of electrical engineering. According to the method, the model predictive control technology is used, and the suspension and yaw rotation processes of a magnetic suspension yaw motor is smoothly controlled in real time. When a wind direction changesand yaw is needed, firstly a rotor current converter finds an optimal control law through a cost function to control the current of a rotor, thus the rotor is suspended upwards and is maintained at asuspension equilibrium point, secondly a stator converter finds an optimal control law through a cost function to control the current of a stator, thus the yaw motor rotates to a wind position according to a specified rotation speed, at the same time the rotor converter finds an optimal control law through a cost function to control the current of a rotor, thus the rotor is maintained at the suspension equilibrium point, the coordinated control of the stator and the rotor can be realized without decoupling, the fast tracking ability and stability of a system are ensured, at the same time, theinfluence of external disturbance on system operation can be effectively suppressed, and the system performance in an entire suspension yaw rotation process is optimal in real time.

Description

technical field [0001] The invention relates to a control method, in particular to a model predictive control-based wind electromagnetic levitation yaw motor control method, which belongs to the technical field of electrical engineering. Background technique [0002] The yaw system, also known as the wind-facing device, is an essential part of the horizontal-axis wind turbine. At present, large and medium-sized horizontal-axis wind turbines all use gear-driven yaw systems, which have complex structures, multi-motor drives, and space-consuming problems. Large, high failure rate, inconvenient maintenance (lubrication is required, and lubricating oil and grease must be replaced regularly), once a failure occurs, it is difficult to replace, and the maintenance time is long, which will seriously affect the normal operation of the wind farm and the entire power grid. . [0003] The wind electromagnetic levitation yaw system adopts magnetic levitation drive technology to replace t...

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Application Information

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IPC IPC(8): H02P21/22H02P21/28H02P21/26H02P21/14H02N15/00
CPCH02N15/00H02P21/14H02P21/22H02P21/26H02P21/28
Inventor 蔡彬王楠楠褚晓广闫绍敏苏佰丽孔英
Owner 山东省华礼海洋科技有限公司
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