A novel field modulated magnetic gear ( FMMG) with concentric configuration was proposed and introduced to the drive train for a wind turbine system, which eliminated the vibration, noise and lubrication problems of mechanical gearbox and avoided the size and weight issues of directly-driven wind turbines. And the efficiency and reliability were improved simultaneously. Based on the field computations by time-stepping finite element analysis, the co-simulation EEM model of synchronous generator and magnetic gear was established and the dynamic performance of the transmission system was studied. The electromagnetic design and simulation results were verified by the experiment of the 1 kW FMMG prototype.%提出一种基于磁场调制的同心式磁齿轮设计,将其引入风力发电系统代替传统机械齿轮,既解决了风力机与发电机的转速匹配问题,又减小了风电机组的总体积,避免了机械齿轮的振动、噪声及润滑等自身无法避免的问题,从而提高了整个风电系统的效率和工作可靠性.在对磁齿轮谐波磁场进行有限元分析的基础上,以时步有限元法为基础,实现了电动机有限元模型与磁齿轮有限元模型的联合动态仿真.设计了一台传动比为6.75的1 kW磁场调制式磁齿轮(FMMG)样机,搭建了基于FMMG传动的风力发电系统试验平台,发电机反电势计算波形与试验波形的一致性说明了电磁设计与分析结果的正确性.
展开▼
