[关键词]
[摘要]
随着我国科技水平快速发展,感应电机不再仅仅是传统工农业生产中使用最多的电机,也是电动汽车领域和航天科技等热点问题中应用较为广泛的动力源。对此,电机中的过载保护技术也需要越来越智能化。在传统的电阻法过载保护基础上提出了一种更加智能的保护方法,实现了对电机运行时定子电阻的实时辨识,再通过电阻与温度的关系直接推算出电机内部温度。以一台1DPT160M系列的变频调速感应电机为例进行试验,验证了该方法的可行性,为电机保护器的过载保护技术提供了新方法。
[Key word]
[Abstract]
With the rapid development of science and technology in China, induction motor is not only the most widely used motor in traditional industrial and agricultural production, but also a widely used power source in the field of electric vehicles and aerospace science and technology. Therefore, the overload protection technology in motor also needs to be more and more intelligent. A more intelligent protection method is proposed based on the traditional resistance overload protection, which realizes the real-time identification of stator resistance during motor operation, and then the internal temperature of the motor can be calculated directly through the relationship between resistance and temperature. Moreover, a 1DPT160M series variable frequency speed regulating induction motor is used for experiments to verify the feasibility of the method, which provides a new principle for overload protection technology of motor protector.
[中图分类号]
[基金项目]