发电机在风力发电系统中的应用
Applications of Generators in Wind Turbine Units
Abstract
电机是风力发电系统中关键的部件,不同型式的电机决定了风力发电系统不同的结构型式及其控制逻辑。文中从不同的角度对此进行了分析比较。异步机具有变速恒频、所需变频器功率小的特点,因而得到了广泛应用。随着永磁体性能的提高及价格的大幅降低,永磁同步机将会是下一代风力发电系统应用的主流机型。 Electric machine is one of the key components in wind turbine units.Different types of electric machines will lead to different types of wind turbines and different control methodologies.It is described in details in this paper.Induction generator can keep frequency constant when speed is variable, and requires smaller converter only.It is widely used in wind turbine units.With the development of permanent magnet both in performance enhancement and price reduction, PM generator will be the leading type in next generation turbines.