Control method of hydraulic variable pitch system of wind turbine generator

The invention discloses a control method for a hydraulic variable pitch system of a wind turbine generator. The control method comprises the following steps: S1, acquiring related parameters of a hydraulic cylinder; s2, a hydraulic cylinder piston position formula is established according to the rel...

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Bibliographische Detailangaben
Hauptverfasser:	ZHU CHANGJIANG, LIU LIMING, LIN ZHOUQUAN, SONG XIAOYANG, ZHOU MINQIANG, ZHUANG JIANYU
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	BLASTING HEATING LIGHTING MACHINES OR ENGINES FOR LIQUIDS MECHANICAL ENGINEERING OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR PRODUCING MECHANICAL POWER WEAPONS WIND MOTORS WIND, SPRING WEIGHT AND MISCELLANEOUS MOTORS
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Beschreibung
Zusammenfassung:	The invention discloses a control method for a hydraulic variable pitch system of a wind turbine generator. The control method comprises the following steps: S1, acquiring related parameters of a hydraulic cylinder; s2, a hydraulic cylinder piston position formula is established according to the relevant parameters in the S1; s3, a piston thrust formula is established according to the relevant parameters in the S1 and the hydraulic cylinder piston position formula in the S2; s4, establishing a variable pitch torque formula according to the relevant parameters in the S1 and the piston thrust formula in the S3, and calculating the variable pitch torque; s5, a proportional valve control signal formula is established according to the relevant parameters in the S1 and the hydraulic cylinder piston position formula in the S2, and a proportional valve control signal is obtained through calculation; and S6, controlling the hydraulic variable pitch system according to the variable pitch torque and the proportional val