Aiming at the ventilation duct system, the utilization of wind energy is low because it can not be secondary use of wind energy when installing a permanent magnet synchronous wind generator, but more generators cause high expense. A dual-rotor permanent magnet synchronous wind power generator (DRPMSWPG) was proposed because it has front and back wind turbine which has different radius and rotated in oppsite direction. Based on the analysis of principle of DRPMSWPG and the tradition strategy of maximum power tracking control, it deduced the relation between front and back wind turbine, the algorithm of output power and the optimum speed with front wind turbine. Speed control method without detection wind speed was proposed which was based on feedback of output power under front wind turbine. Simulation results show the maximum power tracking control strategy of DRPMSWPG in pipeline has been realized based on speed control when it designed suitable radius of front and back wind turbine.%针对通风管道系统,安装单台永磁同步风力发电机不能二次利用风能、风能利用率低,安装多台成本较高的缺点,提出一种具有前后两个半径不同的风机,且风机旋转方向相反的双转子永磁同步风力发电机.在分析双转子永磁同步风力发电机和传统最大功率跟踪控制的工作原理的基础上,得出前后风机风轮半径的关系、前风机作用下发电机输出功率和前风机的最佳转速的算法,提出一种不需检测风速、基于前风机作用下发电机输出功率反馈的转速控制方法.仿真证明,在设计合适的前后风机风轮半径和所提的转速控制的基础上,实现了双转子永磁同步风力发电机的最大功率跟踪控制.
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