电机与控制应用2017，Vol.44Issue(5)：46-51,79,7.
大容量直驱风电机组级联直流组网系统设计
Design of Large Capacity Direct Drive Wind Power Unit Cascaded DC Grid System
摘要
Abstract
The traditional AC network wind farm system has some problems,such as repeated electrical energy conversion,high cost.Aiming at it,A large capacity direct drive wind power unit cascaded DC grid system was designed.The network allowed series interconnection of wind turbines to distributed high-voltage DC (HVDC) power transmission without the AC transformer and the offshore platform.The direct drive permanent magnet power generator (PMSG) and the converter were used in the wind turbine.The converter including the AC/DC unit and the DC/DC unit,and the control strategy has been designed,that was allowed the current to flow at all times in the DC link while simultaneously regulating generator torque by adjusting the duty of the DC/DC unit.The working mode and the control strategy of the land-based thyristor-based inverter power plant had also been developed to realizing the voltage and current regulation of the HVDC link.At last,a complete 150 MW wind farm simulation based on PSCAD/EMTDC was buih,and some calculations had been done.The simulation results indicated that the stable operation of the proposed configuration where each turbine was able to independently perform peak power tracking and the robustness and adaptability to the change of wind speed was also good at the same time.关键词
风力发电/海上风电场/高压直流链路/直流组网Key words
wind power generation/offshore wind farms/high-voltage DC power transmission/DC grid分类
信息技术与安全科学引用本文复制引用
厉孟,谢桢,李长乐..大容量直驱风电机组级联直流组网系统设计[J].电机与控制应用,2017,44(5):46-51,79,7.基金项目
国家自然科学基金重大项目(51490681):电力电子器件及其组合混杂系统多时间尺度的动力学表征 （51490681）
国家973项目(2015CB251004):大功率全控型电力电子器件失效机理及尽限应用 （2015CB251004）
国家自然科学基金项目(51477180):考虑非线性和频变特性的舰船综合电力非正弦供电MW级中频变压器建模和损耗评估项目 （51477180）
