Wind power magnetic suspension yaw system suspension control method based on model mismatch compensator

A technology of yaw system and mismatch compensation, which is applied in the direction of control algorithm type, wind engine control, wind power generation, etc., and can solve problems such as complex process

Active Publication Date: 2018-09-04
QUFU NORMAL UNIV
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  • Wind power magnetic suspension yaw system suspension control method based on model mismatch compensator
  • Wind power magnetic suspension yaw system suspension control method based on model mismatch compensator
  • Wind power magnetic suspension yaw system suspension control method based on model mismatch compensator

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[0068] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0069] Such as figure 1 , image 3 As shown, the present invention is used in a wind electromagnetic suspension yaw system, including a suspension system and a drive system. The suspension system consists of a suspension electromagnet 1, a stator 2, an air gap sensor 3, a suspension frame 4, a guide bearing 5 and a suspension converter 6 and other components; the air gap sensor 3 is used to detect the suspension air gap δ(t) between the suspension electromagnet 1 and the stator 2. The suspension parts such as the suspension electromagnet 1, the air gap sensor 3, the suspension frame 4, and the cabin are collectively referred to as suspensions.

[0070] Such as figure 2 , image 3 As shown, the levitation electromagnet 1 includes a winding 11 and an iron core 12. The levitation electromagnet winding 11 is a DC excitation winding and is connected to the le...

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Abstract

The invention relates to a wind power magnetic suspension yaw system suspension control method based on a model mismatch compensator and belongs to the technical field of electric engineering. According to the method, by means of combination of model prediction control, PID and a model mismatch device, the problem of deviation caused by model mismatch due to linearized processing close to a magnetic suspension yaw system balance point is solved, and suspension at the balance point is controlled stably in real time; a model prediction control strategy is adopted according to a linearized model,a suspension air gap controller is designed, and outer ring suspension air gap control is achieved; output of the suspension air gap controller and output of the model mismatch device are added, a current measurement value of a suspension electromagnet winding is subtracted, a PID controller controls currents of the winding, and inner ring current tracking control is achieved; and suspension airgap deviation and winding current deviation are multiplied by respective adjusting parameters and then added to form the model mismatch device. The method is high in control precision, can effectivelysuppress the influence of external disturbance, and ensure that suspension close to the balance point is fast and stable.

Description

technical field [0001] The invention relates to a control method, in particular to a wind electromagnetic levitation yaw system levitation control method based on a model mismatch compensator, belonging to the technical field of electrical engineering. Background technique [0002] The yaw system is an essential part of the horizontal axis wind turbine. Traditional yaw devices are driven by gears, with high friction loss, high failure rate, inaccurate wind response, inconvenient maintenance, long power outage time, and reduced power generation efficiency. [0003] The wind electromagnetic levitation yaw system adopts magnetic levitation drive technology to replace the traditional gear drive technology. It has the advantages of high wind precision, no lubrication, simple structure, convenient maintenance, short power failure time, and low operation and maintenance costs. Through electromagnetic levitation, on the one hand, the nacelle is in a levitating state, which can real...

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Application Information

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IPC IPC(8): F03D7/02
CPCF03D7/0204F05B2270/329F05B2270/602F05B2270/706Y02E10/72
Inventor 蔡彬王楠楠褚晓广苏佰丽孔英
Owner QUFU NORMAL UNIV
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