吉林大学学报(工学版) ›› 2014, Vol. 44 ›› Issue (6): 1664-1668.doi: 10.13229/j.cnki.jdxbgxb201406020

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Energy hydraulic transmission system of wind turbine

LI Fei-long1, LIN Yong-gang1, LI Wei1, LIU Hong-wei1, CUI Bao-ling2   

  1. 1.State Key Laboratory of Fluid Power Transmission and Control, Zhejiang University, Hangzhou 310027, China;
    2.The Province Key Laboratory of Fluid Transmission Technology, Zhejiang Sci-Tech University, Hangzhou 310018,China
  • Received:2014-04-08 Online:2014-11-01 Published:2014-11-01

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Abstract: The principles of hydraulic transmission were analyzed by illustrating off-grid wind turbine and on-grid wind turbine. A method to realize variable speed constant frequency function through the electro-hydraulic control by regulating the displacement of pump or motor was put forward. By modeling the off-grid wind turbine using Simulink/AMESim software, the method was validated through the cosimulation. Simulation results show that when wind speed fluctuates, the displacement of the pump can be adjusted to maintain the motor speed at the optimal tip speed ratio and the rotor maximum power capture can be ensured; meanwhile, the generator speed can be stabilized around rated value to output constant frequency electricity by adjusting the displacement of the motor.

Key words: fluid power transmission and control, energy hydraulic transmission, co-simulation, variable speed constant frequency, wind turbine

CLC Number: 

  • TK83
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