差动调速的风电机组传动特性研究

对差动调速的新型风电机组的传动系统调速原理、总体功率流向及传动效率进行研究。在完成机组传动系统三轴动力学模型的基础上，建立了1.5 MW差动调速风电机组仿真模型，并通过实验验证了仿真模型的准确性。利用1.5 MW仿真模型，对该机组的传动特性进行仿真研究，结果表明：在不同风速条件下，该机组的整体传动效率高，最高可达0.951；调速端功率消耗占同步发电机输出功率的比值小于 15.47%，且输出转速稳态最大误差小于1.23%。所研究风电机组的传动性能可以很好地满足实际应用要求。

Research on Transmission Performances of Wind Turbines with Differential Speed Regulation

Aiming at the newly-proposed wind turbines with differential speed regulation, the kinematics principles, total power flow and mechanical efficiency of the transmission system were studied. On the basis of completing the triaxial dynamics of the wind turbine transmission systems, a 1.5 MW simulation model of wind turbines with differential speed regulation was established. Afterwards, the correctness of the built simulation model was verified via experiments. Finally, the transmission performances of the proposed wind turbines were studied with the 1.5 MW simulation model. The simulation results show that the overall transmission system efficiency of the proposed wind turbines is high enough under different wind speed conditions which may be up to 0.951. The power required for speed regulation is quite small and only accounts less than 15.47% of that outputs by synchronous generator, while the maximum steady-state errors of the output speed are all less than 1.23%. The transmission performances of the proposed wind turbines are able to meet the requirements for practical applications well.