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滑环在直驱电机转子的应用领域
2022-07-07 23:33:00 【xiaohouzi007】
随着国内风电技术的成熟,风力发电机组也开始小型化,从内陆风扇向大型化、直驱型、海上风电发展。 其中直接驱动风扇技术的发展特别迅速,特别是在大型风扇中直接驱动技术更有利。 在直接驱动型发电机中,为了在运行中正确测量和控制转子的转速,需要转子转速测量装置。 特别是为了安全,至少需要两种速度装置。 通常的做法是在发电机内部的摩擦盘上开孔以提高速度,但该速度装置的缺点是不方便维护、更换。 另一种一般的方式是在与发电机同轴的滑环的一端安装编码器进行转速测量,该速度方式比较安全可靠,但成本高。
默孚龙电子针对上述存在技术问题,提供低成本、更换维护更简单的直接驱动电动机的转子滑环。 将固定在电动机定子上滑环的静止部件、与转子连接的叶轮轮毂连接的滑环的旋转部件、经由固定框架固定在滑环的静止部件上的信号盘、滑环的静止部件、电动机的定子信号盘沿着其圆盘均匀地开设有多个孔,所述孔对应于接近开关位置. 信号板上开的孔是圆孔、方孔、椭圆孔、长孔、菱形孔或扇形孔。 本实用新型的有益效果是,通过与风车轮毂连接的滑环旋转部件和设置在滑环旋转部件上的信号盘,实现信号盘和轮毂的同步旋转,通过接近开关检测脉冲信号,传递给外部控制系统,检测电机转子的速度结构简单、成本低,暴露在电动机壳体外,便于更换维护。
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