Hybrid Power Transmission Technology in a Wind Turbine Generation System

作者：Lin, Yonggang^*; Tu, Le; Liu, Hongwei; Li, Wei

来源：IEEE/ASME Transactions on Mechatronics, 2015, 20(3): 1218-1225.

DOI：10.1109/TMECH.2014.2328629

• Cosimulation
• hybrid power transmission
• wind turbine generation system (WTGS)

The direct-drive hydraulic pump suffers the disadvantages of large displacement and difficulty of manufacture. This paper thus proposes a hybrid power transmission technology that utilizes a single-stage gear transmission and low-speed hydraulic pump. The transmission technology reduces the displacement of the hydraulic pump and retains the torque-stable feature of a hydrostatic transmission. This paper designs the basic structure of a hybrid power transmission system and constructs the system model using the AMESim and MATLAB software. Under the grid-connected circumstance, the variable-speed constant-frequency control algorithm when the wind speed is below the rated value and the pitch control algorithm when the wind speed is above the rated value are simulated and analyzed. A 20-kW prototype has been developed. The simulation and the experimental data demonstrate that a hybrid power transmission meets the demands in various working conditions and stabilizes the torque of a wind turbine generation system.

• 出版日期2015-6
• 单位浙江大学